./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0521.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:48:36,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:48:36,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:48:36,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:48:36,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:48:36,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:48:36,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:48:36,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:48:36,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:48:36,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:48:36,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:48:36,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:48:36,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:48:36,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:48:36,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:48:36,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:48:36,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:48:36,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:48:36,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:48:36,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:48:36,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:48:36,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:48:36,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:48:36,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:48:36,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:48:36,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:48:36,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:48:36,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:48:36,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:48:36,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:48:36,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:48:36,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:48:36,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:48:36,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:48:36,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:48:36,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:48:36,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:48:36,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:48:36,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:48:36,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:48:36,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:48:36,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:48:36,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:48:36,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:48:36,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:48:36,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:48:36,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:48:36,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:48:36,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:48:36,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:48:36,224 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:48:36,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:48:36,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:48:36,225 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:48:36,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:48:36,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:48:36,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:48:36,226 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:48:36,226 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:48:36,227 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:48:36,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:48:36,227 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:48:36,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:48:36,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:48:36,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:48:36,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:48:36,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:48:36,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:48:36,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:48:36,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:48:36,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:48:36,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:48:36,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:48:36,231 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_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2021-11-20 06:48:36,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:48:36,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:48:36,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:48:36,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:48:36,656 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:48:36,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/test-0521.i [2021-11-20 06:48:36,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/5dedc429c/3ec5fd8e8b5f4681b2579f5335d73783/FLAGfe18a9c43 [2021-11-20 06:48:37,552 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:48:37,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/sv-benchmarks/c/memsafety/test-0521.i [2021-11-20 06:48:37,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/5dedc429c/3ec5fd8e8b5f4681b2579f5335d73783/FLAGfe18a9c43 [2021-11-20 06:48:37,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/5dedc429c/3ec5fd8e8b5f4681b2579f5335d73783 [2021-11-20 06:48:37,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:48:37,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:48:37,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:48:37,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:48:37,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:48:37,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:48:37" (1/1) ... [2021-11-20 06:48:37,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e709c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:37, skipping insertion in model container [2021-11-20 06:48:37,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:48:37" (1/1) ... [2021-11-20 06:48:37,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:48:37,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:48:38,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:48:38,378 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:48:38,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:48:38,511 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:48:38,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38 WrapperNode [2021-11-20 06:48:38,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:48:38,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:48:38,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:48:38,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:48:38,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,607 INFO L137 Inliner]: procedures = 125, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 305 [2021-11-20 06:48:38,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:48:38,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:48:38,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:48:38,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:48:38,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:48:38,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:48:38,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:48:38,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:48:38,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (1/1) ... [2021-11-20 06:48:38,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:48:38,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:48:38,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:48:38,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:48:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:48:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:48:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:48:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:48:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:48:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:48:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:48:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:48:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:48:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:48:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:48:38,975 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:48:38,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:48:40,025 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:48:40,038 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:48:40,039 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 06:48:40,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:48:40 BoogieIcfgContainer [2021-11-20 06:48:40,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:48:40,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:48:40,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:48:40,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:48:40,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:48:37" (1/3) ... [2021-11-20 06:48:40,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f143ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:48:40, skipping insertion in model container [2021-11-20 06:48:40,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:48:38" (2/3) ... [2021-11-20 06:48:40,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f143ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:48:40, skipping insertion in model container [2021-11-20 06:48:40,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:48:40" (3/3) ... [2021-11-20 06:48:40,053 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0521.i [2021-11-20 06:48:40,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:48:40,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2021-11-20 06:48:40,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:48:40,129 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:48:40,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2021-11-20 06:48:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 313 states, 160 states have (on average 2.1875) internal successors, (350), 312 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:48:40,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:40,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:48:40,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash 28729512, now seen corresponding path program 1 times [2021-11-20 06:48:40,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:40,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869509896] [2021-11-20 06:48:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:40,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:40,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:40,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869509896] [2021-11-20 06:48:40,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869509896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:40,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:40,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:40,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665438083] [2021-11-20 06:48:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:40,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:48:40,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:40,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:48:40,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:48:40,381 INFO L87 Difference]: Start difference. First operand has 313 states, 160 states have (on average 2.1875) internal successors, (350), 312 states have internal predecessors, (350), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:40,421 INFO L93 Difference]: Finished difference Result 313 states and 340 transitions. [2021-11-20 06:48:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:48:40,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:48:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:40,438 INFO L225 Difference]: With dead ends: 313 [2021-11-20 06:48:40,438 INFO L226 Difference]: Without dead ends: 311 [2021-11-20 06:48:40,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:48:40,445 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:40,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:48:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-20 06:48:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-11-20 06:48:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 159 states have (on average 2.1257861635220126) internal successors, (338), 310 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 338 transitions. [2021-11-20 06:48:40,507 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 338 transitions. Word has length 5 [2021-11-20 06:48:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:40,508 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 338 transitions. [2021-11-20 06:48:40,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 338 transitions. [2021-11-20 06:48:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:48:40,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:40,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:48:40,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:48:40,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash 889570248, now seen corresponding path program 1 times [2021-11-20 06:48:40,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:40,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317635232] [2021-11-20 06:48:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:40,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:40,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:40,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317635232] [2021-11-20 06:48:40,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317635232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:40,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:40,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:40,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992464378] [2021-11-20 06:48:40,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:40,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:40,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:40,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:40,577 INFO L87 Difference]: Start difference. First operand 311 states and 338 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:40,903 INFO L93 Difference]: Finished difference Result 295 states and 322 transitions. [2021-11-20 06:48:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:40,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:48:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:40,912 INFO L225 Difference]: With dead ends: 295 [2021-11-20 06:48:40,912 INFO L226 Difference]: Without dead ends: 295 [2021-11-20 06:48:40,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:40,921 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 77 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:40,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 406 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:48:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-20 06:48:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-11-20 06:48:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 159 states have (on average 2.0251572327044025) internal successors, (322), 294 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2021-11-20 06:48:40,965 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 6 [2021-11-20 06:48:40,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:40,966 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2021-11-20 06:48:40,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2021-11-20 06:48:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:48:40,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:40,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:48:40,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:48:40,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash 889570249, now seen corresponding path program 1 times [2021-11-20 06:48:40,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:40,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008871873] [2021-11-20 06:48:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:40,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:41,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:41,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008871873] [2021-11-20 06:48:41,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008871873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:41,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:41,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:41,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527312733] [2021-11-20 06:48:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:41,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:41,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:41,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:41,063 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:41,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:41,353 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2021-11-20 06:48:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:41,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:48:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:41,356 INFO L225 Difference]: With dead ends: 279 [2021-11-20 06:48:41,356 INFO L226 Difference]: Without dead ends: 279 [2021-11-20 06:48:41,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:41,358 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 61 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:41,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 415 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:48:41,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-20 06:48:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-11-20 06:48:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 159 states have (on average 1.9245283018867925) internal successors, (306), 278 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 306 transitions. [2021-11-20 06:48:41,401 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 306 transitions. Word has length 6 [2021-11-20 06:48:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:41,402 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 306 transitions. [2021-11-20 06:48:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 306 transitions. [2021-11-20 06:48:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:48:41,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:41,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:48:41,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:48:41,404 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2021-11-20 06:48:41,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:41,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749870679] [2021-11-20 06:48:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:41,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:41,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:41,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749870679] [2021-11-20 06:48:41,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749870679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:41,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:41,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:41,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871251227] [2021-11-20 06:48:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:41,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:41,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:41,480 INFO L87 Difference]: Start difference. First operand 279 states and 306 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:41,774 INFO L93 Difference]: Finished difference Result 334 states and 370 transitions. [2021-11-20 06:48:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:41,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:48:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:41,778 INFO L225 Difference]: With dead ends: 334 [2021-11-20 06:48:41,778 INFO L226 Difference]: Without dead ends: 334 [2021-11-20 06:48:41,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:41,780 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 76 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:41,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 481 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:48:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-20 06:48:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 277. [2021-11-20 06:48:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 159 states have (on average 1.9119496855345912) internal successors, (304), 276 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:41,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 304 transitions. [2021-11-20 06:48:41,792 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 304 transitions. Word has length 6 [2021-11-20 06:48:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:41,793 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 304 transitions. [2021-11-20 06:48:41,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 304 transitions. [2021-11-20 06:48:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:48:41,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:41,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:48:41,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:48:41,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash 889571340, now seen corresponding path program 1 times [2021-11-20 06:48:41,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:41,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258452680] [2021-11-20 06:48:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:41,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:41,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:41,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258452680] [2021-11-20 06:48:41,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258452680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:41,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:41,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:41,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331858578] [2021-11-20 06:48:41,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:41,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:41,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:41,842 INFO L87 Difference]: Start difference. First operand 277 states and 304 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:42,186 INFO L93 Difference]: Finished difference Result 466 states and 515 transitions. [2021-11-20 06:48:42,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:42,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 06:48:42,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:42,190 INFO L225 Difference]: With dead ends: 466 [2021-11-20 06:48:42,191 INFO L226 Difference]: Without dead ends: 466 [2021-11-20 06:48:42,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:42,195 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 220 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:42,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 579 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:48:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-20 06:48:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 275. [2021-11-20 06:48:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 159 states have (on average 1.89937106918239) internal successors, (302), 274 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 302 transitions. [2021-11-20 06:48:42,211 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 302 transitions. Word has length 6 [2021-11-20 06:48:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:42,216 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 302 transitions. [2021-11-20 06:48:42,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 302 transitions. [2021-11-20 06:48:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 06:48:42,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:42,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:42,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:48:42,221 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:42,223 INFO L85 PathProgramCache]: Analyzing trace with hash 178517033, now seen corresponding path program 1 times [2021-11-20 06:48:42,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:42,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348844081] [2021-11-20 06:48:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:42,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:42,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:42,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348844081] [2021-11-20 06:48:42,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348844081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:42,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:42,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:48:42,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439372790] [2021-11-20 06:48:42,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:42,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:48:42,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:42,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:48:42,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:48:42,349 INFO L87 Difference]: Start difference. First operand 275 states and 302 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:42,441 INFO L93 Difference]: Finished difference Result 678 states and 747 transitions. [2021-11-20 06:48:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:48:42,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 06:48:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:42,447 INFO L225 Difference]: With dead ends: 678 [2021-11-20 06:48:42,447 INFO L226 Difference]: Without dead ends: 678 [2021-11-20 06:48:42,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:48:42,449 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 597 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:42,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 870 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:48:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-20 06:48:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 280. [2021-11-20 06:48:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 164 states have (on average 1.8780487804878048) internal successors, (308), 279 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 308 transitions. [2021-11-20 06:48:42,464 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 308 transitions. Word has length 8 [2021-11-20 06:48:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:42,465 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 308 transitions. [2021-11-20 06:48:42,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 308 transitions. [2021-11-20 06:48:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:48:42,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:42,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:42,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:48:42,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2119660206, now seen corresponding path program 1 times [2021-11-20 06:48:42,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:42,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395160192] [2021-11-20 06:48:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:42,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:42,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:42,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395160192] [2021-11-20 06:48:42,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395160192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:42,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:42,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:42,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719057623] [2021-11-20 06:48:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:42,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:42,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:42,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:42,515 INFO L87 Difference]: Start difference. First operand 280 states and 308 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:42,767 INFO L93 Difference]: Finished difference Result 330 states and 365 transitions. [2021-11-20 06:48:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:42,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:48:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:42,771 INFO L225 Difference]: With dead ends: 330 [2021-11-20 06:48:42,771 INFO L226 Difference]: Without dead ends: 330 [2021-11-20 06:48:42,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:42,773 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 72 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:42,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 476 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:48:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-20 06:48:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 278. [2021-11-20 06:48:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 164 states have (on average 1.8658536585365855) internal successors, (306), 277 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 306 transitions. [2021-11-20 06:48:42,785 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 306 transitions. Word has length 11 [2021-11-20 06:48:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:42,785 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 306 transitions. [2021-11-20 06:48:42,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 306 transitions. [2021-11-20 06:48:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:48:42,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:42,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:42,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:48:42,787 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2119660205, now seen corresponding path program 1 times [2021-11-20 06:48:42,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:42,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197942233] [2021-11-20 06:48:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:42,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:42,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:42,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197942233] [2021-11-20 06:48:42,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197942233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:42,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:42,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:42,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24665330] [2021-11-20 06:48:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:42,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:42,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:42,866 INFO L87 Difference]: Start difference. First operand 278 states and 306 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:43,244 INFO L93 Difference]: Finished difference Result 462 states and 510 transitions. [2021-11-20 06:48:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:48:43,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:43,249 INFO L225 Difference]: With dead ends: 462 [2021-11-20 06:48:43,249 INFO L226 Difference]: Without dead ends: 462 [2021-11-20 06:48:43,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:43,251 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 216 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:43,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 574 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:48:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-20 06:48:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 276. [2021-11-20 06:48:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 164 states have (on average 1.853658536585366) internal successors, (304), 275 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 304 transitions. [2021-11-20 06:48:43,274 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 304 transitions. Word has length 11 [2021-11-20 06:48:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:43,274 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 304 transitions. [2021-11-20 06:48:43,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 304 transitions. [2021-11-20 06:48:43,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:48:43,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:43,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:43,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:48:43,282 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1231388841, now seen corresponding path program 1 times [2021-11-20 06:48:43,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:43,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967750029] [2021-11-20 06:48:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:43,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:43,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:43,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967750029] [2021-11-20 06:48:43,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967750029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:43,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:43,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:48:43,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756846460] [2021-11-20 06:48:43,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:43,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:48:43,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:48:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:48:43,386 INFO L87 Difference]: Start difference. First operand 276 states and 304 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:43,682 INFO L93 Difference]: Finished difference Result 666 states and 735 transitions. [2021-11-20 06:48:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:48:43,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 06:48:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:43,687 INFO L225 Difference]: With dead ends: 666 [2021-11-20 06:48:43,688 INFO L226 Difference]: Without dead ends: 666 [2021-11-20 06:48:43,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:48:43,689 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 576 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:43,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 1363 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:48:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-20 06:48:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 279. [2021-11-20 06:48:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 167 states have (on average 1.8383233532934131) internal successors, (307), 278 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2021-11-20 06:48:43,701 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 13 [2021-11-20 06:48:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:43,702 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2021-11-20 06:48:43,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2021-11-20 06:48:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:48:43,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:43,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:43,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:48:43,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:43,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:43,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2035528525, now seen corresponding path program 1 times [2021-11-20 06:48:43,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:43,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686730765] [2021-11-20 06:48:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:43,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:43,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:43,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686730765] [2021-11-20 06:48:43,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686730765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:43,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:43,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:48:43,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130845474] [2021-11-20 06:48:43,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:43,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:48:43,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:43,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:48:43,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:48:43,769 INFO L87 Difference]: Start difference. First operand 279 states and 307 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:43,890 INFO L93 Difference]: Finished difference Result 408 states and 447 transitions. [2021-11-20 06:48:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:48:43,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:48:43,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:43,894 INFO L225 Difference]: With dead ends: 408 [2021-11-20 06:48:43,894 INFO L226 Difference]: Without dead ends: 408 [2021-11-20 06:48:43,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:48:43,895 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 237 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:43,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1120 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:48:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-11-20 06:48:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 343. [2021-11-20 06:48:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 231 states have (on average 1.8831168831168832) internal successors, (435), 342 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 435 transitions. [2021-11-20 06:48:43,907 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 435 transitions. Word has length 15 [2021-11-20 06:48:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:43,907 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 435 transitions. [2021-11-20 06:48:43,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 435 transitions. [2021-11-20 06:48:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:48:43,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:43,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:43,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:48:43,909 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1316385230, now seen corresponding path program 1 times [2021-11-20 06:48:43,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:43,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500397950] [2021-11-20 06:48:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:43,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:43,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:43,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500397950] [2021-11-20 06:48:43,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500397950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:43,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:43,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:48:43,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337694083] [2021-11-20 06:48:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:43,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:43,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:43,946 INFO L87 Difference]: Start difference. First operand 343 states and 435 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:43,962 INFO L93 Difference]: Finished difference Result 328 states and 410 transitions. [2021-11-20 06:48:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:43,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:48:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:43,965 INFO L225 Difference]: With dead ends: 328 [2021-11-20 06:48:43,966 INFO L226 Difference]: Without dead ends: 328 [2021-11-20 06:48:43,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:43,967 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 223 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:43,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 363 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:48:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-20 06:48:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-20 06:48:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 216 states have (on average 1.8981481481481481) internal successors, (410), 327 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 410 transitions. [2021-11-20 06:48:43,978 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 410 transitions. Word has length 16 [2021-11-20 06:48:43,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:43,978 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 410 transitions. [2021-11-20 06:48:43,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 410 transitions. [2021-11-20 06:48:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:48:43,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:43,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:43,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:48:43,980 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1932989585, now seen corresponding path program 1 times [2021-11-20 06:48:43,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:43,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070563758] [2021-11-20 06:48:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:43,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:44,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:44,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070563758] [2021-11-20 06:48:44,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070563758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:44,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:44,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:44,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127131471] [2021-11-20 06:48:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:44,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:44,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:44,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:44,014 INFO L87 Difference]: Start difference. First operand 328 states and 410 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:44,233 INFO L93 Difference]: Finished difference Result 312 states and 378 transitions. [2021-11-20 06:48:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 06:48:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:44,236 INFO L225 Difference]: With dead ends: 312 [2021-11-20 06:48:44,237 INFO L226 Difference]: Without dead ends: 312 [2021-11-20 06:48:44,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:44,238 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 77 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:44,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 346 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:48:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-20 06:48:44,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-20 06:48:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 216 states have (on average 1.75) internal successors, (378), 311 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 378 transitions. [2021-11-20 06:48:44,248 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 378 transitions. Word has length 17 [2021-11-20 06:48:44,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:44,248 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 378 transitions. [2021-11-20 06:48:44,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,248 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 378 transitions. [2021-11-20 06:48:44,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:48:44,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:44,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:44,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:48:44,250 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1932989586, now seen corresponding path program 1 times [2021-11-20 06:48:44,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:44,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678892834] [2021-11-20 06:48:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:44,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:44,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:44,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678892834] [2021-11-20 06:48:44,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678892834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:44,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:44,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:48:44,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473280948] [2021-11-20 06:48:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:44,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:44,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:44,288 INFO L87 Difference]: Start difference. First operand 312 states and 378 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:44,490 INFO L93 Difference]: Finished difference Result 296 states and 346 transitions. [2021-11-20 06:48:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:44,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 06:48:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:44,493 INFO L225 Difference]: With dead ends: 296 [2021-11-20 06:48:44,493 INFO L226 Difference]: Without dead ends: 296 [2021-11-20 06:48:44,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:44,495 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 61 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:44,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 355 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:48:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-20 06:48:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-11-20 06:48:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 216 states have (on average 1.6018518518518519) internal successors, (346), 295 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 346 transitions. [2021-11-20 06:48:44,504 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 346 transitions. Word has length 17 [2021-11-20 06:48:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:44,505 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 346 transitions. [2021-11-20 06:48:44,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 346 transitions. [2021-11-20 06:48:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:48:44,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:44,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:44,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:48:44,507 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2117838446, now seen corresponding path program 1 times [2021-11-20 06:48:44,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:44,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768182933] [2021-11-20 06:48:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:44,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:44,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:44,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768182933] [2021-11-20 06:48:44,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768182933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:44,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:44,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:48:44,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835740322] [2021-11-20 06:48:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:44,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:48:44,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:48:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:48:44,575 INFO L87 Difference]: Start difference. First operand 296 states and 346 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:44,725 INFO L93 Difference]: Finished difference Result 394 states and 436 transitions. [2021-11-20 06:48:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:48:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:48:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:44,729 INFO L225 Difference]: With dead ends: 394 [2021-11-20 06:48:44,729 INFO L226 Difference]: Without dead ends: 394 [2021-11-20 06:48:44,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:48:44,730 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 277 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:44,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 994 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:48:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-20 06:48:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 293. [2021-11-20 06:48:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 213 states have (on average 1.596244131455399) internal successors, (340), 292 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 340 transitions. [2021-11-20 06:48:44,740 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 340 transitions. Word has length 19 [2021-11-20 06:48:44,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:44,741 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 340 transitions. [2021-11-20 06:48:44,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 340 transitions. [2021-11-20 06:48:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:48:44,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:44,742 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:44,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:48:44,743 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:44,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1413279430, now seen corresponding path program 1 times [2021-11-20 06:48:44,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:44,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684713215] [2021-11-20 06:48:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:44,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:44,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:44,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684713215] [2021-11-20 06:48:44,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684713215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:44,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:44,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:48:44,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075155480] [2021-11-20 06:48:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:44,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:48:44,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:48:44,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:48:44,817 INFO L87 Difference]: Start difference. First operand 293 states and 340 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:45,188 INFO L93 Difference]: Finished difference Result 316 states and 364 transitions. [2021-11-20 06:48:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:48:45,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:48:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:45,191 INFO L225 Difference]: With dead ends: 316 [2021-11-20 06:48:45,192 INFO L226 Difference]: Without dead ends: 316 [2021-11-20 06:48:45,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:48:45,193 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 272 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:45,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 557 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:48:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-20 06:48:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 295. [2021-11-20 06:48:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 217 states have (on average 1.5898617511520738) internal successors, (345), 294 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 345 transitions. [2021-11-20 06:48:45,203 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 345 transitions. Word has length 19 [2021-11-20 06:48:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:45,203 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 345 transitions. [2021-11-20 06:48:45,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 345 transitions. [2021-11-20 06:48:45,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:48:45,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:45,205 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:45,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:48:45,206 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1413279429, now seen corresponding path program 1 times [2021-11-20 06:48:45,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:45,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6038370] [2021-11-20 06:48:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:45,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:45,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:45,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6038370] [2021-11-20 06:48:45,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6038370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:45,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:45,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:48:45,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826177192] [2021-11-20 06:48:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:45,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:48:45,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:48:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:48:45,339 INFO L87 Difference]: Start difference. First operand 295 states and 345 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:45,887 INFO L93 Difference]: Finished difference Result 409 states and 475 transitions. [2021-11-20 06:48:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:48:45,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:48:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:45,891 INFO L225 Difference]: With dead ends: 409 [2021-11-20 06:48:45,891 INFO L226 Difference]: Without dead ends: 409 [2021-11-20 06:48:45,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:48:45,892 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 482 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:45,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 655 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:48:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-20 06:48:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 294. [2021-11-20 06:48:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 217 states have (on average 1.5852534562211982) internal successors, (344), 293 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 344 transitions. [2021-11-20 06:48:45,905 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 344 transitions. Word has length 19 [2021-11-20 06:48:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:45,905 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 344 transitions. [2021-11-20 06:48:45,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 344 transitions. [2021-11-20 06:48:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:48:45,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:45,910 INFO L514 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] [2021-11-20 06:48:45,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:48:45,911 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash -805519643, now seen corresponding path program 1 times [2021-11-20 06:48:45,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:45,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74481099] [2021-11-20 06:48:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:45,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:46,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:46,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74481099] [2021-11-20 06:48:46,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74481099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:46,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:46,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:48:46,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933565039] [2021-11-20 06:48:46,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:46,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:48:46,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:48:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:48:46,054 INFO L87 Difference]: Start difference. First operand 294 states and 344 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:46,382 INFO L93 Difference]: Finished difference Result 394 states and 442 transitions. [2021-11-20 06:48:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:48:46,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 06:48:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:46,385 INFO L225 Difference]: With dead ends: 394 [2021-11-20 06:48:46,385 INFO L226 Difference]: Without dead ends: 394 [2021-11-20 06:48:46,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:48:46,387 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 251 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:46,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1409 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:48:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-20 06:48:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 280. [2021-11-20 06:48:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 203 states have (on average 1.5812807881773399) internal successors, (321), 279 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 321 transitions. [2021-11-20 06:48:46,395 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 321 transitions. Word has length 24 [2021-11-20 06:48:46,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:46,396 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 321 transitions. [2021-11-20 06:48:46,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 321 transitions. [2021-11-20 06:48:46,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:48:46,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:46,397 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:46,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:48:46,398 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1972902682, now seen corresponding path program 1 times [2021-11-20 06:48:46,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:46,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925582011] [2021-11-20 06:48:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:46,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:46,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:46,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925582011] [2021-11-20 06:48:46,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925582011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:46,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:46,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:48:46,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690840084] [2021-11-20 06:48:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:46,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:48:46,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:48:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:48:46,444 INFO L87 Difference]: Start difference. First operand 280 states and 321 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:46,523 INFO L93 Difference]: Finished difference Result 298 states and 331 transitions. [2021-11-20 06:48:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:48:46,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 06:48:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:46,526 INFO L225 Difference]: With dead ends: 298 [2021-11-20 06:48:46,527 INFO L226 Difference]: Without dead ends: 298 [2021-11-20 06:48:46,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:48:46,528 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 667 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:46,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 560 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:48:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-20 06:48:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 280. [2021-11-20 06:48:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 203 states have (on average 1.5763546798029557) internal successors, (320), 279 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2021-11-20 06:48:46,537 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 24 [2021-11-20 06:48:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:46,537 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2021-11-20 06:48:46,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2021-11-20 06:48:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 06:48:46,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:46,539 INFO L514 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] [2021-11-20 06:48:46,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:48:46,539 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr151ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:46,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1021020451, now seen corresponding path program 1 times [2021-11-20 06:48:46,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:46,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419022668] [2021-11-20 06:48:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:46,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:46,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:46,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419022668] [2021-11-20 06:48:46,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419022668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:46,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:46,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:48:46,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256299235] [2021-11-20 06:48:46,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:46,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:48:46,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:48:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:48:46,627 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:46,959 INFO L93 Difference]: Finished difference Result 288 states and 321 transitions. [2021-11-20 06:48:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:48:46,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 06:48:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:46,962 INFO L225 Difference]: With dead ends: 288 [2021-11-20 06:48:46,962 INFO L226 Difference]: Without dead ends: 284 [2021-11-20 06:48:46,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:48:46,964 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 26 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:46,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 663 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:48:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-20 06:48:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 278. [2021-11-20 06:48:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 201 states have (on average 1.5771144278606966) internal successors, (317), 277 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 317 transitions. [2021-11-20 06:48:46,974 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 317 transitions. Word has length 26 [2021-11-20 06:48:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:46,975 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 317 transitions. [2021-11-20 06:48:46,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 317 transitions. [2021-11-20 06:48:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:48:46,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:46,976 INFO L514 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] [2021-11-20 06:48:46,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:48:46,977 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1580222949, now seen corresponding path program 1 times [2021-11-20 06:48:46,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:46,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313327227] [2021-11-20 06:48:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:46,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:47,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:47,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313327227] [2021-11-20 06:48:47,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313327227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:47,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:47,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:48:47,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189954240] [2021-11-20 06:48:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:47,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:48:47,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:48:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:47,029 INFO L87 Difference]: Start difference. First operand 278 states and 317 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:47,044 INFO L93 Difference]: Finished difference Result 263 states and 292 transitions. [2021-11-20 06:48:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:48:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-20 06:48:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:47,047 INFO L225 Difference]: With dead ends: 263 [2021-11-20 06:48:47,048 INFO L226 Difference]: Without dead ends: 245 [2021-11-20 06:48:47,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:48:47,050 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 31 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:47,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 485 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:48:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-20 06:48:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-11-20 06:48:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 168 states have (on average 1.630952380952381) internal successors, (274), 244 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 274 transitions. [2021-11-20 06:48:47,065 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 274 transitions. Word has length 27 [2021-11-20 06:48:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:47,065 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 274 transitions. [2021-11-20 06:48:47,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 274 transitions. [2021-11-20 06:48:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:48:47,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:47,066 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:47,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:48:47,066 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1161321696, now seen corresponding path program 1 times [2021-11-20 06:48:47,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026031473] [2021-11-20 06:48:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:47,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:47,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:47,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026031473] [2021-11-20 06:48:47,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026031473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:47,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:47,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 06:48:47,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581433422] [2021-11-20 06:48:47,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:47,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:48:47,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:48:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:48:47,329 INFO L87 Difference]: Start difference. First operand 245 states and 274 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:48,308 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2021-11-20 06:48:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:48:48,309 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-20 06:48:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:48,311 INFO L225 Difference]: With dead ends: 251 [2021-11-20 06:48:48,311 INFO L226 Difference]: Without dead ends: 251 [2021-11-20 06:48:48,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:48:48,312 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 136 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:48,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1325 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:48:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-20 06:48:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 244. [2021-11-20 06:48:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.625) internal successors, (273), 243 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 273 transitions. [2021-11-20 06:48:48,320 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 273 transitions. Word has length 27 [2021-11-20 06:48:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:48,321 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 273 transitions. [2021-11-20 06:48:48,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 273 transitions. [2021-11-20 06:48:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:48:48,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:48,322 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:48,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 06:48:48,322 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:48,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:48,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1161321697, now seen corresponding path program 1 times [2021-11-20 06:48:48,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:48,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370671940] [2021-11-20 06:48:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:48,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:48,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:48,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370671940] [2021-11-20 06:48:48,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370671940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:48,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:48,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 06:48:48,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330352354] [2021-11-20 06:48:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:48,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:48:48,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:48:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:48:48,726 INFO L87 Difference]: Start difference. First operand 244 states and 273 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:51,082 INFO L93 Difference]: Finished difference Result 484 states and 549 transitions. [2021-11-20 06:48:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:48:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-20 06:48:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:51,085 INFO L225 Difference]: With dead ends: 484 [2021-11-20 06:48:51,086 INFO L226 Difference]: Without dead ends: 484 [2021-11-20 06:48:51,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:48:51,087 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 681 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:51,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 1983 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 06:48:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-20 06:48:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 243. [2021-11-20 06:48:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 168 states have (on average 1.619047619047619) internal successors, (272), 242 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 272 transitions. [2021-11-20 06:48:51,096 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 272 transitions. Word has length 27 [2021-11-20 06:48:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:51,096 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 272 transitions. [2021-11-20 06:48:51,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 272 transitions. [2021-11-20 06:48:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:48:51,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:51,097 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:51,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 06:48:51,098 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash -672116074, now seen corresponding path program 1 times [2021-11-20 06:48:51,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:51,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727105793] [2021-11-20 06:48:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:51,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:51,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:51,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727105793] [2021-11-20 06:48:51,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727105793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:51,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:51,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:48:51,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324372954] [2021-11-20 06:48:51,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:51,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:48:51,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:48:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:48:51,185 INFO L87 Difference]: Start difference. First operand 243 states and 272 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:51,464 INFO L93 Difference]: Finished difference Result 265 states and 296 transitions. [2021-11-20 06:48:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:48:51,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-20 06:48:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:51,466 INFO L225 Difference]: With dead ends: 265 [2021-11-20 06:48:51,466 INFO L226 Difference]: Without dead ends: 265 [2021-11-20 06:48:51,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:48:51,468 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 725 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:51,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 934 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:48:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-20 06:48:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 243. [2021-11-20 06:48:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 168 states have (on average 1.6130952380952381) internal successors, (271), 242 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 271 transitions. [2021-11-20 06:48:51,475 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 271 transitions. Word has length 29 [2021-11-20 06:48:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:51,476 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 271 transitions. [2021-11-20 06:48:51,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 271 transitions. [2021-11-20 06:48:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:48:51,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:51,477 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:51,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 06:48:51,477 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:51,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash 102015914, now seen corresponding path program 1 times [2021-11-20 06:48:51,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:51,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032542792] [2021-11-20 06:48:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:51,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:48:51,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:51,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032542792] [2021-11-20 06:48:51,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032542792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:51,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:51,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:48:51,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255415265] [2021-11-20 06:48:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:51,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:48:51,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:48:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:48:51,532 INFO L87 Difference]: Start difference. First operand 243 states and 271 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:51,773 INFO L93 Difference]: Finished difference Result 259 states and 290 transitions. [2021-11-20 06:48:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:48:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 06:48:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:51,776 INFO L225 Difference]: With dead ends: 259 [2021-11-20 06:48:51,776 INFO L226 Difference]: Without dead ends: 259 [2021-11-20 06:48:51,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:48:51,777 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 51 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:51,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 673 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:48:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-20 06:48:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2021-11-20 06:48:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 168 states have (on average 1.6071428571428572) internal successors, (270), 241 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-11-20 06:48:51,786 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 31 [2021-11-20 06:48:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:51,787 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-11-20 06:48:51,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-11-20 06:48:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:48:51,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:51,788 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:51,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 06:48:51,788 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash 102015915, now seen corresponding path program 1 times [2021-11-20 06:48:51,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:51,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724090702] [2021-11-20 06:48:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:51,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:52,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:52,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724090702] [2021-11-20 06:48:52,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724090702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:52,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:52,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:48:52,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504478230] [2021-11-20 06:48:52,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:52,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:48:52,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:52,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:48:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:48:52,031 INFO L87 Difference]: Start difference. First operand 242 states and 270 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:52,680 INFO L93 Difference]: Finished difference Result 374 states and 421 transitions. [2021-11-20 06:48:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:48:52,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 06:48:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:52,683 INFO L225 Difference]: With dead ends: 374 [2021-11-20 06:48:52,683 INFO L226 Difference]: Without dead ends: 374 [2021-11-20 06:48:52,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:48:52,685 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 469 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:52,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 975 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:48:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-20 06:48:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 241. [2021-11-20 06:48:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.6011904761904763) internal successors, (269), 240 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 269 transitions. [2021-11-20 06:48:52,694 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 269 transitions. Word has length 31 [2021-11-20 06:48:52,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:52,695 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 269 transitions. [2021-11-20 06:48:52,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 269 transitions. [2021-11-20 06:48:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 06:48:52,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:52,696 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:52,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 06:48:52,697 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1705778921, now seen corresponding path program 1 times [2021-11-20 06:48:52,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:52,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146242881] [2021-11-20 06:48:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:52,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:52,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:52,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146242881] [2021-11-20 06:48:52,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146242881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:52,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:52,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:48:52,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51990009] [2021-11-20 06:48:52,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:52,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:48:52,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:48:52,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:48:52,774 INFO L87 Difference]: Start difference. First operand 241 states and 269 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 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) [2021-11-20 06:48:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:53,227 INFO L93 Difference]: Finished difference Result 398 states and 443 transitions. [2021-11-20 06:48:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:48:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 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 [2021-11-20 06:48:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:53,230 INFO L225 Difference]: With dead ends: 398 [2021-11-20 06:48:53,230 INFO L226 Difference]: Without dead ends: 398 [2021-11-20 06:48:53,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:48:53,231 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 580 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:53,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 614 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:48:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-20 06:48:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 244. [2021-11-20 06:48:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 173 states have (on average 1.5953757225433527) internal successors, (276), 243 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 276 transitions. [2021-11-20 06:48:53,241 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 276 transitions. Word has length 34 [2021-11-20 06:48:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:53,242 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 276 transitions. [2021-11-20 06:48:53,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 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) [2021-11-20 06:48:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 276 transitions. [2021-11-20 06:48:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 06:48:53,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:53,243 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:53,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 06:48:53,243 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1705778920, now seen corresponding path program 1 times [2021-11-20 06:48:53,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:53,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747234342] [2021-11-20 06:48:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:53,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:53,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:53,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747234342] [2021-11-20 06:48:53,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747234342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:53,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:53,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:48:53,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383948555] [2021-11-20 06:48:53,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:53,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:48:53,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:48:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:48:53,365 INFO L87 Difference]: Start difference. First operand 244 states and 276 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2021-11-20 06:48:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:54,032 INFO L93 Difference]: Finished difference Result 496 states and 560 transitions. [2021-11-20 06:48:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:48:54,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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 [2021-11-20 06:48:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:54,035 INFO L225 Difference]: With dead ends: 496 [2021-11-20 06:48:54,035 INFO L226 Difference]: Without dead ends: 496 [2021-11-20 06:48:54,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:48:54,036 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 738 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:54,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 746 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:48:54,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-11-20 06:48:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 308. [2021-11-20 06:48:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 237 states have (on average 1.5738396624472575) internal successors, (373), 307 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 373 transitions. [2021-11-20 06:48:54,045 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 373 transitions. Word has length 34 [2021-11-20 06:48:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:54,046 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 373 transitions. [2021-11-20 06:48:54,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2021-11-20 06:48:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 373 transitions. [2021-11-20 06:48:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 06:48:54,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:54,047 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:54,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 06:48:54,047 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:54,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1332799064, now seen corresponding path program 1 times [2021-11-20 06:48:54,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795052975] [2021-11-20 06:48:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:54,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:54,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:54,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795052975] [2021-11-20 06:48:54,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795052975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:48:54,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:48:54,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-20 06:48:54,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824169964] [2021-11-20 06:48:54,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:48:54,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:48:54,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:48:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:48:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:48:54,543 INFO L87 Difference]: Start difference. First operand 308 states and 373 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:56,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:48:56,224 INFO L93 Difference]: Finished difference Result 310 states and 374 transitions. [2021-11-20 06:48:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:48:56,225 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-20 06:48:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:48:56,227 INFO L225 Difference]: With dead ends: 310 [2021-11-20 06:48:56,227 INFO L226 Difference]: Without dead ends: 310 [2021-11-20 06:48:56,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2021-11-20 06:48:56,228 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 251 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:48:56,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2066 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:48:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-20 06:48:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2021-11-20 06:48:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 237 states have (on average 1.5696202531645569) internal successors, (372), 307 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 372 transitions. [2021-11-20 06:48:56,237 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 372 transitions. Word has length 35 [2021-11-20 06:48:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:48:56,237 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 372 transitions. [2021-11-20 06:48:56,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:48:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 372 transitions. [2021-11-20 06:48:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 06:48:56,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:48:56,239 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:48:56,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 06:48:56,239 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:48:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:48:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash -561839822, now seen corresponding path program 1 times [2021-11-20 06:48:56,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:48:56,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146595837] [2021-11-20 06:48:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:56,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:48:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:56,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:48:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146595837] [2021-11-20 06:48:56,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146595837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:48:56,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848510974] [2021-11-20 06:48:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:48:56,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:48:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:48:56,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:48:56,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:48:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:48:56,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-20 06:48:56,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:48:56,954 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 [2021-11-20 06:48:57,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:48:57,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:48:57,155 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:48:57,156 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 [2021-11-20 06:48:57,222 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:48:57,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 69 [2021-11-20 06:48:57,240 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-20 06:48:57,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 100 [2021-11-20 06:48:57,579 INFO L354 Elim1Store]: treesize reduction 64, result has 17.9 percent of original size [2021-11-20 06:48:57,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 135 [2021-11-20 06:48:57,604 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-11-20 06:48:57,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 154 [2021-11-20 06:48:57,624 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:48:57,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 234 [2021-11-20 06:48:57,648 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:48:57,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 310 [2021-11-20 06:48:58,232 INFO L354 Elim1Store]: treesize reduction 64, result has 17.9 percent of original size [2021-11-20 06:48:58,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 135 [2021-11-20 06:48:58,251 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-11-20 06:48:58,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 154 [2021-11-20 06:48:58,273 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:48:58,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 242 treesize of output 234 [2021-11-20 06:48:58,292 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:48:58,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 258 treesize of output 262 [2021-11-20 06:48:58,720 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-11-20 06:48:58,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 125 [2021-11-20 06:48:58,737 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-20 06:48:58,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 146 [2021-11-20 06:48:58,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 180 [2021-11-20 06:48:58,764 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-20 06:48:58,765 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 180 treesize of output 175 [2021-11-20 06:48:58,778 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-11-20 06:48:58,778 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 169 treesize of output 164 [2021-11-20 06:48:58,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 168 [2021-11-20 06:48:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:48:58,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:49:01,038 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (= (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (select (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 |ULTIMATE.start_main_#t~mem10#1.base|))) (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse0) (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|))) (+ (select (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse1 |ULTIMATE.start_main_#t~mem10#1.offset|) |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) 0)) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (= (let ((.cse3 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse3 |ULTIMATE.start_main_#t~mem10#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse2) (select (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse3 |ULTIMATE.start_main_#t~mem10#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))) 0))) is different from false [2021-11-20 06:49:03,529 INFO L354 Elim1Store]: treesize reduction 106, result has 22.1 percent of original size [2021-11-20 06:49:03,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 7820 treesize of output 6198 [2021-11-20 06:49:03,582 INFO L354 Elim1Store]: treesize reduction 82, result has 21.2 percent of original size [2021-11-20 06:49:03,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 12488 treesize of output 9676 [2021-11-20 06:49:03,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:49:03,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9676 treesize of output 9174 [2021-11-20 06:49:03,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:49:03,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9174 treesize of output 8672 [2021-11-20 06:49:03,933 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:49:03,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:49:03,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-20 06:49:03,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63398430] [2021-11-20 06:49:03,934 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:49:03,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:49:03,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:03,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:49:03,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=361, Unknown=2, NotChecked=38, Total=462 [2021-11-20 06:49:03,936 INFO L87 Difference]: Start difference. First operand 308 states and 372 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:05,293 INFO L93 Difference]: Finished difference Result 367 states and 436 transitions. [2021-11-20 06:49:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:49:05,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-20 06:49:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:05,299 INFO L225 Difference]: With dead ends: 367 [2021-11-20 06:49:05,300 INFO L226 Difference]: Without dead ends: 367 [2021-11-20 06:49:05,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 16 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=132, Invalid=682, Unknown=2, NotChecked=54, Total=870 [2021-11-20 06:49:05,302 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 80 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:05,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2329 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:49:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-20 06:49:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2021-11-20 06:49:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 266 states have (on average 1.5112781954887218) internal successors, (402), 336 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 402 transitions. [2021-11-20 06:49:05,322 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 402 transitions. Word has length 35 [2021-11-20 06:49:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:05,323 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 402 transitions. [2021-11-20 06:49:05,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 402 transitions. [2021-11-20 06:49:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:49:05,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:05,325 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:05,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 06:49:05,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-20 06:49:05,551 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:05,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2034656951, now seen corresponding path program 1 times [2021-11-20 06:49:05,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:05,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316416050] [2021-11-20 06:49:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:05,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:49:05,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:05,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316416050] [2021-11-20 06:49:05,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316416050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:05,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:05,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:49:05,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409713009] [2021-11-20 06:49:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:05,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:49:05,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:05,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:49:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:49:05,636 INFO L87 Difference]: Start difference. First operand 337 states and 402 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:05,829 INFO L93 Difference]: Finished difference Result 343 states and 409 transitions. [2021-11-20 06:49:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:49:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 06:49:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:05,832 INFO L225 Difference]: With dead ends: 343 [2021-11-20 06:49:05,832 INFO L226 Difference]: Without dead ends: 343 [2021-11-20 06:49:05,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:49:05,833 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 2 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:05,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 845 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:49:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-20 06:49:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2021-11-20 06:49:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 270 states have (on average 1.5074074074074073) internal successors, (407), 340 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 407 transitions. [2021-11-20 06:49:05,842 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 407 transitions. Word has length 40 [2021-11-20 06:49:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:05,843 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 407 transitions. [2021-11-20 06:49:05,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 407 transitions. [2021-11-20 06:49:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 06:49:05,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:05,844 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:05,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 06:49:05,844 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 854914797, now seen corresponding path program 1 times [2021-11-20 06:49:05,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:05,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307582894] [2021-11-20 06:49:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:05,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:49:05,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:05,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307582894] [2021-11-20 06:49:05,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307582894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:05,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:05,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:49:05,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102198086] [2021-11-20 06:49:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:05,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:49:05,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:49:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:49:05,934 INFO L87 Difference]: Start difference. First operand 341 states and 407 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:06,199 INFO L93 Difference]: Finished difference Result 461 states and 515 transitions. [2021-11-20 06:49:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:49:06,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-20 06:49:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:06,203 INFO L225 Difference]: With dead ends: 461 [2021-11-20 06:49:06,203 INFO L226 Difference]: Without dead ends: 461 [2021-11-20 06:49:06,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-11-20 06:49:06,204 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1409 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:06,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 956 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:49:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-20 06:49:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 340. [2021-11-20 06:49:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 269 states have (on average 1.4981412639405205) internal successors, (403), 339 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 403 transitions. [2021-11-20 06:49:06,216 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 403 transitions. Word has length 43 [2021-11-20 06:49:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:06,218 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 403 transitions. [2021-11-20 06:49:06,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 403 transitions. [2021-11-20 06:49:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 06:49:06,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:06,220 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:06,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 06:49:06,224 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:06,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash 190981616, now seen corresponding path program 1 times [2021-11-20 06:49:06,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:06,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43907108] [2021-11-20 06:49:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:06,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:49:06,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43907108] [2021-11-20 06:49:06,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43907108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:06,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:49:06,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523430139] [2021-11-20 06:49:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:06,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:49:06,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:49:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:49:06,318 INFO L87 Difference]: Start difference. First operand 340 states and 403 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:06,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:06,628 INFO L93 Difference]: Finished difference Result 445 states and 521 transitions. [2021-11-20 06:49:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:49:06,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-20 06:49:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:06,631 INFO L225 Difference]: With dead ends: 445 [2021-11-20 06:49:06,631 INFO L226 Difference]: Without dead ends: 445 [2021-11-20 06:49:06,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:49:06,632 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 359 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:06,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 421 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:49:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-20 06:49:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 344. [2021-11-20 06:49:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 273 states have (on average 1.4945054945054945) internal successors, (408), 343 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 408 transitions. [2021-11-20 06:49:06,641 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 408 transitions. Word has length 45 [2021-11-20 06:49:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:06,642 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 408 transitions. [2021-11-20 06:49:06,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 408 transitions. [2021-11-20 06:49:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 06:49:06,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:06,643 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:06,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 06:49:06,643 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 190981617, now seen corresponding path program 1 times [2021-11-20 06:49:06,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120626642] [2021-11-20 06:49:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:06,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:49:06,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:06,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120626642] [2021-11-20 06:49:06,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120626642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:06,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:06,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:49:06,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938919364] [2021-11-20 06:49:06,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:06,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:49:06,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:49:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:49:06,860 INFO L87 Difference]: Start difference. First operand 344 states and 408 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:07,687 INFO L93 Difference]: Finished difference Result 371 states and 438 transitions. [2021-11-20 06:49:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:49:07,688 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-20 06:49:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:07,690 INFO L225 Difference]: With dead ends: 371 [2021-11-20 06:49:07,691 INFO L226 Difference]: Without dead ends: 367 [2021-11-20 06:49:07,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:49:07,695 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 378 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:07,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 1948 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:49:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-20 06:49:07,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 345. [2021-11-20 06:49:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 274 states have (on average 1.489051094890511) internal successors, (408), 344 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 408 transitions. [2021-11-20 06:49:07,706 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 408 transitions. Word has length 45 [2021-11-20 06:49:07,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:07,707 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 408 transitions. [2021-11-20 06:49:07,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 408 transitions. [2021-11-20 06:49:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 06:49:07,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:07,708 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:07,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 06:49:07,709 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash 767246721, now seen corresponding path program 2 times [2021-11-20 06:49:07,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:07,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904331301] [2021-11-20 06:49:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:07,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:49:08,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:08,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904331301] [2021-11-20 06:49:08,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904331301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:49:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867770575] [2021-11-20 06:49:08,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:49:08,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:49:08,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:49:08,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:49:08,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:49:08,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:49:08,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:49:08,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 06:49:08,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:49:08,626 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 [2021-11-20 06:49:08,775 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:49:08,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:49:08,901 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:49:08,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 06:49:09,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 06:49:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:09,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-20 06:49:09,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:09,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:09,378 INFO L354 Elim1Store]: treesize reduction 67, result has 11.8 percent of original size [2021-11-20 06:49:09,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 38 [2021-11-20 06:49:09,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:49:09,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:09,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-11-20 06:49:09,759 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:49:09,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:49:09,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:09,792 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-11-20 06:49:09,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 59 [2021-11-20 06:49:10,345 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:49:10,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:49:10,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:10,396 INFO L354 Elim1Store]: treesize reduction 108, result has 12.2 percent of original size [2021-11-20 06:49:10,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 88 treesize of output 62 [2021-11-20 06:49:10,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 06:49:10,731 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 06:49:10,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 50 [2021-11-20 06:49:10,882 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 06:49:10,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 37 [2021-11-20 06:49:10,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:49:10,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:49:10,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867770575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:10,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:49:10,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [21] total 39 [2021-11-20 06:49:10,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061642555] [2021-11-20 06:49:10,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:10,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:49:10,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:49:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2021-11-20 06:49:10,980 INFO L87 Difference]: Start difference. First operand 345 states and 408 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:13,116 INFO L93 Difference]: Finished difference Result 354 states and 417 transitions. [2021-11-20 06:49:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:49:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-20 06:49:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:13,118 INFO L225 Difference]: With dead ends: 354 [2021-11-20 06:49:13,118 INFO L226 Difference]: Without dead ends: 354 [2021-11-20 06:49:13,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=557, Invalid=2523, Unknown=0, NotChecked=0, Total=3080 [2021-11-20 06:49:13,120 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 140 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:13,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1687 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1233 Invalid, 0 Unknown, 301 Unchecked, 1.0s Time] [2021-11-20 06:49:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-20 06:49:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 344. [2021-11-20 06:49:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 274 states have (on average 1.4854014598540146) internal successors, (407), 343 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 407 transitions. [2021-11-20 06:49:13,129 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 407 transitions. Word has length 46 [2021-11-20 06:49:13,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:13,129 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 407 transitions. [2021-11-20 06:49:13,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 407 transitions. [2021-11-20 06:49:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 06:49:13,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:13,130 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:13,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 06:49:13,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:49:13,351 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash 767246722, now seen corresponding path program 1 times [2021-11-20 06:49:13,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:13,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713709541] [2021-11-20 06:49:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:13,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:49:14,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:14,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713709541] [2021-11-20 06:49:14,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713709541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:49:14,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157473191] [2021-11-20 06:49:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:14,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:49:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:49:14,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:49:14,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:49:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:14,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 06:49:14,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:49:14,474 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 [2021-11-20 06:49:14,479 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 [2021-11-20 06:49:14,617 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:49:14,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-20 06:49:14,625 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:49:14,626 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 21 treesize of output 21 [2021-11-20 06:49:14,797 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 06:49:14,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:49:14,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:49:14,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-20 06:49:15,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:15,231 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-20 06:49:15,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 42 [2021-11-20 06:49:15,354 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:49:15,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 48 [2021-11-20 06:49:15,372 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-20 06:49:15,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2021-11-20 06:49:15,527 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:49:15,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 78 [2021-11-20 06:49:15,559 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-20 06:49:15,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 56 [2021-11-20 06:49:15,785 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-20 06:49:15,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 69 [2021-11-20 06:49:15,810 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:49:15,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 65 [2021-11-20 06:49:16,108 INFO L354 Elim1Store]: treesize reduction 114, result has 13.0 percent of original size [2021-11-20 06:49:16,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 100 treesize of output 77 [2021-11-20 06:49:16,142 INFO L354 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2021-11-20 06:49:16,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 67 [2021-11-20 06:49:16,303 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:49:16,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2021-11-20 06:49:16,311 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:49:16,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 30 [2021-11-20 06:49:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:49:16,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:49:19,011 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (<= 0 (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse1 |ULTIMATE.start_main_#t~mem10#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse0) (select (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse1 |ULTIMATE.start_main_#t~mem10#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (let ((.cse6 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) .cse6 |ULTIMATE.start_main_#t~mem10#1.offset|)) (.cse5 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem10#1.base|))) (let ((.cse3 (select .cse5 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse4 (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse2) .cse3) .cse4) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| .cse5) .cse3) .cse4)))))))) is different from false [2021-11-20 06:49:21,072 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_54| Int)) (or (<= |v_ULTIMATE.start_main_~#iter~0#1.base_54| |c_#StackHeapBarrier|) (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (let ((.cse4 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.offset|) .cse4 |ULTIMATE.start_main_#t~mem10#1.offset|)) (.cse3 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem10#1.base|))) (let ((.cse1 (select .cse3 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse2 (+ (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54| .cse0) .cse1) .cse2) 4) (select (store |c_#length| |v_ULTIMATE.start_main_~#iter~0#1.base_54| 8) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_54| .cse3) .cse1) .cse2))))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (<= 0 (let ((.cse6 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse5 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.offset|) .cse6 |ULTIMATE.start_main_#t~mem10#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54| .cse5) (select (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem10#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse5 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))))))))) is different from false [2021-11-20 06:49:23,232 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_54| Int)) (or (<= |v_ULTIMATE.start_main_~#iter~0#1.base_54| |c_#StackHeapBarrier|) (and (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (<= 0 (let ((.cse1 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.offset|) .cse1 |ULTIMATE.start_main_#t~mem10#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54| .cse0) (select (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.base|) .cse1 |ULTIMATE.start_main_#t~mem10#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset|)) (+ (select .cse0 |ULTIMATE.start_main_~#iter~0#1.offset|) 4)))))) (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| Int) (|ULTIMATE.start_main_#t~mem10#1.base| Int) (|ULTIMATE.start_main_#t~mem10#1.offset| Int)) (let ((.cse6 (+ |ULTIMATE.start_main_~#iter~0#1.offset| 4))) (let ((.cse2 (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.offset|) .cse6 |ULTIMATE.start_main_#t~mem10#1.offset|)) (.cse5 (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_54|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem10#1.base|))) (let ((.cse3 (select .cse5 |ULTIMATE.start_main_~#iter~0#1.offset|)) (.cse4 (+ (select .cse2 |ULTIMATE.start_main_~#iter~0#1.offset|) 4))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~#iter~0#1.base_54| .cse2) .cse3) .cse4) 4) (select (store |c_#length| |v_ULTIMATE.start_main_~#iter~0#1.base_54| 8) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_54| .cse5) .cse3) .cse4)))))))))) is different from false [2021-11-20 06:49:23,272 INFO L354 Elim1Store]: treesize reduction 134, result has 6.9 percent of original size [2021-11-20 06:49:23,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1675 treesize of output 1421 [2021-11-20 06:49:23,324 INFO L354 Elim1Store]: treesize reduction 191, result has 11.6 percent of original size [2021-11-20 06:49:23,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 55811 treesize of output 42911 [2021-11-20 06:49:23,488 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:49:23,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42911 treesize of output 40841 [2021-11-20 06:49:23,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:49:23,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40841 treesize of output 38771 [2021-11-20 06:49:24,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:49:24,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:49:24,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-20 06:49:24,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308715820] [2021-11-20 06:49:24,160 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:49:24,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:49:24,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:49:24,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1271, Unknown=3, NotChecked=222, Total=1640 [2021-11-20 06:49:24,162 INFO L87 Difference]: Start difference. First operand 344 states and 407 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:26,590 INFO L93 Difference]: Finished difference Result 480 states and 564 transitions. [2021-11-20 06:49:26,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:49:26,590 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-20 06:49:26,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:26,592 INFO L225 Difference]: With dead ends: 480 [2021-11-20 06:49:26,593 INFO L226 Difference]: Without dead ends: 480 [2021-11-20 06:49:26,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=336, Invalid=2123, Unknown=3, NotChecked=294, Total=2756 [2021-11-20 06:49:26,595 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 616 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:26,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 2242 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:49:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-20 06:49:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 343. [2021-11-20 06:49:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.4817518248175183) internal successors, (406), 342 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 406 transitions. [2021-11-20 06:49:26,606 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 406 transitions. Word has length 46 [2021-11-20 06:49:26,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:26,607 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 406 transitions. [2021-11-20 06:49:26,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 406 transitions. [2021-11-20 06:49:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 06:49:26,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:26,608 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:26,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-20 06:49:26,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:49:26,833 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2037167036, now seen corresponding path program 1 times [2021-11-20 06:49:26,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:26,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340047179] [2021-11-20 06:49:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:26,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:49:27,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340047179] [2021-11-20 06:49:27,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340047179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:27,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:27,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:49:27,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551598538] [2021-11-20 06:49:27,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:27,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:49:27,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:27,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:49:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:49:27,022 INFO L87 Difference]: Start difference. First operand 343 states and 406 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 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) [2021-11-20 06:49:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:27,696 INFO L93 Difference]: Finished difference Result 510 states and 577 transitions. [2021-11-20 06:49:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:49:27,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 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 [2021-11-20 06:49:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:27,699 INFO L225 Difference]: With dead ends: 510 [2021-11-20 06:49:27,699 INFO L226 Difference]: Without dead ends: 510 [2021-11-20 06:49:27,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:49:27,699 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 985 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:27,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 721 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:49:27,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-20 06:49:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 343. [2021-11-20 06:49:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.4781021897810218) internal successors, (405), 342 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2021-11-20 06:49:27,711 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 48 [2021-11-20 06:49:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:27,712 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2021-11-20 06:49:27,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 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) [2021-11-20 06:49:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2021-11-20 06:49:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 06:49:27,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:27,713 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:27,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-20 06:49:27,714 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:27,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1330545387, now seen corresponding path program 1 times [2021-11-20 06:49:27,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:27,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344233588] [2021-11-20 06:49:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:27,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:49:27,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:27,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344233588] [2021-11-20 06:49:27,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344233588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:27,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:27,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:49:28,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670616014] [2021-11-20 06:49:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:28,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:49:28,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:49:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:49:28,003 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:28,958 INFO L93 Difference]: Finished difference Result 460 states and 513 transitions. [2021-11-20 06:49:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:49:28,958 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-20 06:49:28,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:28,960 INFO L225 Difference]: With dead ends: 460 [2021-11-20 06:49:28,960 INFO L226 Difference]: Without dead ends: 460 [2021-11-20 06:49:28,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:49:28,962 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 1594 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:28,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 743 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:49:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-20 06:49:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 375. [2021-11-20 06:49:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 306 states have (on average 1.526143790849673) internal successors, (467), 374 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 467 transitions. [2021-11-20 06:49:28,973 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 467 transitions. Word has length 49 [2021-11-20 06:49:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:28,974 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 467 transitions. [2021-11-20 06:49:28,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 467 transitions. [2021-11-20 06:49:28,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 06:49:28,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:28,975 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:28,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-20 06:49:28,976 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1246142357, now seen corresponding path program 1 times [2021-11-20 06:49:28,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:28,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471732369] [2021-11-20 06:49:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:28,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:49:29,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:29,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471732369] [2021-11-20 06:49:29,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471732369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:49:29,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237028185] [2021-11-20 06:49:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:29,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:49:29,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:49:29,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:49:29,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:49:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:29,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 06:49:29,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:49:29,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:49:29,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:49:30,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:30,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:49:30,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:30,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:49:30,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:30,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:49:30,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:30,235 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:49:30,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 06:49:30,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:30,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:49:30,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:30,422 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:49:30,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 06:49:30,511 INFO L354 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2021-11-20 06:49:30,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 48 [2021-11-20 06:49:30,526 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 06:49:30,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-11-20 06:49:30,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:49:30,648 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:49:30,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 26 [2021-11-20 06:49:30,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:49:30,655 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:49:30,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 13 [2021-11-20 06:49:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:49:30,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:49:50,613 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:49:50,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:49:50,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-20 06:49:50,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495061790] [2021-11-20 06:49:50,614 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:49:50,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:49:50,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:50,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:49:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=879, Unknown=5, NotChecked=0, Total=992 [2021-11-20 06:49:50,617 INFO L87 Difference]: Start difference. First operand 375 states and 467 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:51,512 INFO L93 Difference]: Finished difference Result 391 states and 483 transitions. [2021-11-20 06:49:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:49:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-20 06:49:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:51,514 INFO L225 Difference]: With dead ends: 391 [2021-11-20 06:49:51,515 INFO L226 Difference]: Without dead ends: 391 [2021-11-20 06:49:51,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=155, Invalid=1322, Unknown=5, NotChecked=0, Total=1482 [2021-11-20 06:49:51,515 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 67 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:51,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1950 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:49:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-20 06:49:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 386. [2021-11-20 06:49:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 317 states have (on average 1.5078864353312302) internal successors, (478), 385 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:51,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 478 transitions. [2021-11-20 06:49:51,524 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 478 transitions. Word has length 51 [2021-11-20 06:49:51,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:51,525 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 478 transitions. [2021-11-20 06:49:51,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 478 transitions. [2021-11-20 06:49:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 06:49:51,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:51,526 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-20 06:49:51,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:49:51,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-20 06:49:51,749 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash 997414492, now seen corresponding path program 1 times [2021-11-20 06:49:51,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:51,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423016913] [2021-11-20 06:49:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:51,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:49:51,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:51,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423016913] [2021-11-20 06:49:51,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423016913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:49:51,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:49:51,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:49:51,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747883630] [2021-11-20 06:49:51,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:49:51,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:49:51,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:49:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:49:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:49:51,825 INFO L87 Difference]: Start difference. First operand 386 states and 478 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:49:52,051 INFO L93 Difference]: Finished difference Result 470 states and 523 transitions. [2021-11-20 06:49:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:49:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-20 06:49:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:49:52,054 INFO L225 Difference]: With dead ends: 470 [2021-11-20 06:49:52,054 INFO L226 Difference]: Without dead ends: 470 [2021-11-20 06:49:52,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:49:52,055 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1473 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:49:52,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 956 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:49:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-20 06:49:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 386. [2021-11-20 06:49:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 317 states have (on average 1.5047318611987381) internal successors, (477), 385 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 477 transitions. [2021-11-20 06:49:52,064 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 477 transitions. Word has length 53 [2021-11-20 06:49:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:49:52,064 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 477 transitions. [2021-11-20 06:49:52,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:49:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 477 transitions. [2021-11-20 06:49:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 06:49:52,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:49:52,066 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:49:52,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-20 06:49:52,066 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:49:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:49:52,067 INFO L85 PathProgramCache]: Analyzing trace with hash -471775986, now seen corresponding path program 1 times [2021-11-20 06:49:52,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:49:52,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339516497] [2021-11-20 06:49:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:52,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:49:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:49:53,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:49:53,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339516497] [2021-11-20 06:49:53,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339516497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:49:53,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052818466] [2021-11-20 06:49:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:49:53,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:49:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:49:53,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:49:53,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:49:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:49:53,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-20 06:49:53,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:49:53,855 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 [2021-11-20 06:49:53,920 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:49:53,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:49:53,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 06:49:54,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-20 06:49:54,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:54,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:54,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-11-20 06:49:54,074 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-11-20 06:49:54,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2021-11-20 06:49:54,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-20 06:49:54,293 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:49:54,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-20 06:49:54,389 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 [2021-11-20 06:49:54,436 INFO L354 Elim1Store]: treesize reduction 78, result has 31.6 percent of original size [2021-11-20 06:49:54,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 31 treesize of output 53 [2021-11-20 06:49:54,631 INFO L354 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2021-11-20 06:49:54,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 56 [2021-11-20 06:49:54,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:54,829 INFO L354 Elim1Store]: treesize reduction 71, result has 11.3 percent of original size [2021-11-20 06:49:54,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 73 [2021-11-20 06:49:54,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:49:55,360 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:49:55,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:49:55,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:55,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:49:55,420 INFO L354 Elim1Store]: treesize reduction 110, result has 32.1 percent of original size [2021-11-20 06:49:55,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 81 [2021-11-20 06:49:55,643 INFO L354 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2021-11-20 06:49:55,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 133 treesize of output 91 [2021-11-20 06:49:55,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 06:49:56,173 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:49:56,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 262 [2021-11-20 06:49:56,243 INFO L354 Elim1Store]: treesize reduction 238, result has 13.8 percent of original size [2021-11-20 06:49:56,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 247 treesize of output 131 [2021-11-20 06:49:57,401 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:49:57,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 269 treesize of output 271 [2021-11-20 06:49:57,463 INFO L354 Elim1Store]: treesize reduction 306, result has 11.0 percent of original size [2021-11-20 06:49:57,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 256 treesize of output 134 [2021-11-20 06:49:58,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 45 [2021-11-20 06:49:58,385 INFO L354 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2021-11-20 06:49:58,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 269 treesize of output 149 [2021-11-20 06:49:58,423 INFO L354 Elim1Store]: treesize reduction 96, result has 10.3 percent of original size [2021-11-20 06:49:58,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 185 treesize of output 173 [2021-11-20 06:49:58,813 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:49:58,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 117 [2021-11-20 06:49:59,369 INFO L354 Elim1Store]: treesize reduction 272, result has 12.8 percent of original size [2021-11-20 06:49:59,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 171 treesize of output 120 [2021-11-20 06:50:00,256 INFO L354 Elim1Store]: treesize reduction 195, result has 2.0 percent of original size [2021-11-20 06:50:00,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 173 treesize of output 87 [2021-11-20 06:50:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:50:00,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:50:00,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052818466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:50:00,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:50:00,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [28] total 52 [2021-11-20 06:50:00,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385581893] [2021-11-20 06:50:00,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:50:00,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 06:50:00,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:50:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 06:50:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2535, Unknown=0, NotChecked=0, Total=2756 [2021-11-20 06:50:00,660 INFO L87 Difference]: Start difference. First operand 386 states and 477 transitions. Second operand has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:50:02,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:50:02,125 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2021-11-20 06:50:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 06:50:02,126 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-20 06:50:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:50:02,128 INFO L225 Difference]: With dead ends: 395 [2021-11-20 06:50:02,128 INFO L226 Difference]: Without dead ends: 395 [2021-11-20 06:50:02,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=443, Invalid=4527, Unknown=0, NotChecked=0, Total=4970 [2021-11-20 06:50:02,130 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 40 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1732 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:50:02,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 2341 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 364 Invalid, 0 Unknown, 1732 Unchecked, 0.2s Time] [2021-11-20 06:50:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-20 06:50:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2021-11-20 06:50:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 390 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:50:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 484 transitions. [2021-11-20 06:50:02,139 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 484 transitions. Word has length 55 [2021-11-20 06:50:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:50:02,139 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 484 transitions. [2021-11-20 06:50:02,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:50:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 484 transitions. [2021-11-20 06:50:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 06:50:02,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:50:02,140 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:50:02,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:50:02,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-20 06:50:02,361 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:50:02,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:50:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash -471775985, now seen corresponding path program 1 times [2021-11-20 06:50:02,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:50:02,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140369326] [2021-11-20 06:50:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:50:02,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:50:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:50:05,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:50:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140369326] [2021-11-20 06:50:05,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140369326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:50:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100482438] [2021-11-20 06:50:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:50:05,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:50:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:50:05,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:50:05,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:50:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:50:05,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-20 06:50:05,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:50:05,153 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 [2021-11-20 06:50:05,158 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 [2021-11-20 06:50:05,234 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:50:05,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:50:05,250 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:50:05,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:50:05,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:50:05,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 06:50:05,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:05,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 06:50:05,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:05,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:50:05,553 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-11-20 06:50:05,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2021-11-20 06:50:05,574 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:50:05,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:50:05,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:50:05,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2021-11-20 06:50:05,875 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:50:05,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 34 [2021-11-20 06:50:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:05,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-20 06:50:05,974 INFO L354 Elim1Store]: treesize reduction 66, result has 23.3 percent of original size [2021-11-20 06:50:05,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 34 [2021-11-20 06:50:06,026 INFO L354 Elim1Store]: treesize reduction 78, result has 31.6 percent of original size [2021-11-20 06:50:06,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 31 treesize of output 53 [2021-11-20 06:50:06,291 INFO L354 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2021-11-20 06:50:06,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 102 [2021-11-20 06:50:06,305 INFO L354 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2021-11-20 06:50:06,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 87 [2021-11-20 06:50:06,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:06,468 INFO L354 Elim1Store]: treesize reduction 91, result has 12.5 percent of original size [2021-11-20 06:50:06,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 153 treesize of output 125 [2021-11-20 06:50:06,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:06,485 INFO L354 Elim1Store]: treesize reduction 93, result has 10.6 percent of original size [2021-11-20 06:50:06,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 194 treesize of output 198 [2021-11-20 06:50:06,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:06,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:07,001 INFO L354 Elim1Store]: treesize reduction 98, result has 22.2 percent of original size [2021-11-20 06:50:07,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 54 [2021-11-20 06:50:07,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:07,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:50:07,043 INFO L354 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2021-11-20 06:50:07,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 40 [2021-11-20 06:50:07,214 INFO L354 Elim1Store]: treesize reduction 176, result has 16.6 percent of original size [2021-11-20 06:50:07,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 192 treesize of output 142 [2021-11-20 06:50:07,267 INFO L354 Elim1Store]: treesize reduction 264, result has 16.7 percent of original size [2021-11-20 06:50:07,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 269 treesize of output 272 [2021-11-20 06:50:07,597 INFO L354 Elim1Store]: treesize reduction 372, result has 13.9 percent of original size [2021-11-20 06:50:07,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 291 treesize of output 297 [2021-11-20 06:50:07,660 INFO L354 Elim1Store]: treesize reduction 224, result has 13.8 percent of original size [2021-11-20 06:50:07,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 278 treesize of output 153 [2021-11-20 06:50:08,324 INFO L354 Elim1Store]: treesize reduction 372, result has 13.9 percent of original size [2021-11-20 06:50:08,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 291 treesize of output 297 [2021-11-20 06:50:08,390 INFO L354 Elim1Store]: treesize reduction 224, result has 13.8 percent of original size [2021-11-20 06:50:08,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 278 treesize of output 153 [2021-11-20 06:50:09,144 INFO L354 Elim1Store]: treesize reduction 284, result has 10.7 percent of original size [2021-11-20 06:50:09,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 325 treesize of output 180 [2021-11-20 06:50:09,231 INFO L354 Elim1Store]: treesize reduction 340, result has 11.9 percent of original size [2021-11-20 06:50:09,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 221 treesize of output 223 [2021-11-20 06:50:10,512 INFO L354 Elim1Store]: treesize reduction 432, result has 9.8 percent of original size [2021-11-20 06:50:10,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 256 treesize of output 192 [2021-11-20 06:50:10,657 INFO L354 Elim1Store]: treesize reduction 528, result has 8.7 percent of original size [2021-11-20 06:50:10,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 240 treesize of output 241 [2021-11-20 06:50:11,856 INFO L354 Elim1Store]: treesize reduction 215, result has 1.8 percent of original size [2021-11-20 06:50:11,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 249 treesize of output 151 [2021-11-20 06:50:11,884 INFO L354 Elim1Store]: treesize reduction 174, result has 0.6 percent of original size [2021-11-20 06:50:11,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 123 treesize of output 89 [2021-11-20 06:50:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:50:12,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:11,226 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 1134207 column 7: canceled [2021-11-20 06:53:11,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:53:11,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-11-20 06:53:11,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172302319] [2021-11-20 06:53:11,226 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-20 06:53:11,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 06:53:11,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:53:11,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 06:53:11,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=4273, Unknown=18, NotChecked=0, Total=4556 [2021-11-20 06:53:11,232 INFO L87 Difference]: Start difference. First operand 391 states and 484 transitions. Second operand has 27 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:53:13,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 60.2s TimeCoverageRelationStatistics Valid=265, Invalid=4273, Unknown=18, NotChecked=0, Total=4556 [2021-11-20 06:53:13,471 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:13,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:53:13,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-20 06:53:13,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:53:13,676 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 1134209 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:256) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.push(ManagedScript.java:124) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:365) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 06:53:13,680 INFO L158 Benchmark]: Toolchain (without parser) took 275899.61ms. Allocated memory was 88.1MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 50.6MB in the beginning and 10.1GB in the end (delta: -10.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-11-20 06:53:13,681 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:53:13,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 729.99ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 50.4MB in the beginning and 91.6MB in the end (delta: -41.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:53:13,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.52ms. Allocated memory is still 125.8MB. Free memory was 91.6MB in the beginning and 88.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:53:13,681 INFO L158 Benchmark]: Boogie Preprocessor took 96.82ms. Allocated memory is still 125.8MB. Free memory was 88.8MB in the beginning and 85.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:53:13,681 INFO L158 Benchmark]: RCFGBuilder took 1336.50ms. Allocated memory is still 125.8MB. Free memory was 85.8MB in the beginning and 98.6MB in the end (delta: -12.8MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-11-20 06:53:13,682 INFO L158 Benchmark]: TraceAbstraction took 273635.81ms. Allocated memory was 125.8MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 98.6MB in the beginning and 10.1GB in the end (delta: -10.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-11-20 06:53:13,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 729.99ms. Allocated memory was 88.1MB in the beginning and 125.8MB in the end (delta: 37.7MB). Free memory was 50.4MB in the beginning and 91.6MB in the end (delta: -41.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.52ms. Allocated memory is still 125.8MB. Free memory was 91.6MB in the beginning and 88.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.82ms. Allocated memory is still 125.8MB. Free memory was 88.8MB in the beginning and 85.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1336.50ms. Allocated memory is still 125.8MB. Free memory was 85.8MB in the beginning and 98.6MB in the end (delta: -12.8MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * TraceAbstraction took 273635.81ms. Allocated memory was 125.8MB in the beginning and 11.3GB in the end (delta: 11.2GB). Free memory was 98.6MB in the beginning and 10.1GB in the end (delta: -10.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 1134209 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 1134209 column 7: canceled: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-20 06:53:13,925 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-20 06:53:13,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:53:16,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:53:16,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:53:16,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:53:16,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:53:16,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:53:16,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:53:16,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:53:16,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:53:16,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:53:16,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:53:16,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:53:16,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:53:16,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:53:16,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:53:16,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:53:16,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:53:16,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:53:16,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:53:16,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:53:16,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:53:16,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:53:16,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:53:16,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:53:16,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:53:16,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:53:16,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:53:16,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:53:16,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:53:16,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:53:16,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:53:16,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:53:16,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:53:16,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:53:16,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:53:16,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:53:16,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:53:16,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:53:16,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:53:16,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:53:16,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:53:16,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:53:17,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:53:17,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:53:17,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:53:17,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:53:17,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:53:17,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:53:17,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:53:17,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:53:17,023 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:53:17,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:53:17,025 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:53:17,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:53:17,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:53:17,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:53:17,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:53:17,026 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:53:17,026 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:53:17,027 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:53:17,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:53:17,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:53:17,027 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:53:17,028 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:53:17,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:53:17,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:53:17,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:53:17,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:53:17,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:53:17,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:53:17,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:53:17,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:53:17,030 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:53:17,031 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:53:17,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:53:17,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:53:17,032 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa94cb741c9c7eaa2ca9bb871f44dd4c619faf21975944b61e221a61ad9730d7 [2021-11-20 06:53:17,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:53:17,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:53:17,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:53:17,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:53:17,531 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:53:17,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/test-0521.i [2021-11-20 06:53:17,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/3ea72f0a2/e6571f1ae37e4e60bba5620cb82098d5/FLAG9c9135ada [2021-11-20 06:53:18,443 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:53:18,444 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/sv-benchmarks/c/memsafety/test-0521.i [2021-11-20 06:53:18,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/3ea72f0a2/e6571f1ae37e4e60bba5620cb82098d5/FLAG9c9135ada [2021-11-20 06:53:18,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/data/3ea72f0a2/e6571f1ae37e4e60bba5620cb82098d5 [2021-11-20 06:53:18,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:53:18,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:53:18,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:53:18,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:53:18,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:53:18,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:53:18" (1/1) ... [2021-11-20 06:53:18,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70acd63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:18, skipping insertion in model container [2021-11-20 06:53:18,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:53:18" (1/1) ... [2021-11-20 06:53:18,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:53:18,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:53:19,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:53:19,244 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:53:19,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:53:19,372 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:53:19,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19 WrapperNode [2021-11-20 06:53:19,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:53:19,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:53:19,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:53:19,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:53:19,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,492 INFO L137 Inliner]: procedures = 128, calls = 95, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 298 [2021-11-20 06:53:19,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:53:19,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:53:19,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:53:19,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:53:19,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:53:19,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:53:19,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:53:19,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:53:19,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (1/1) ... [2021-11-20 06:53:19,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:53:19,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:53:19,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:53:19,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:53:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:53:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:53:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:53:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:53:19,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:53:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:53:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:53:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:53:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:53:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:53:19,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:53:19,912 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:53:19,914 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:53:21,511 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:53:21,535 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:53:21,535 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 06:53:21,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:53:21 BoogieIcfgContainer [2021-11-20 06:53:21,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:53:21,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:53:21,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:53:21,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:53:21,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:53:18" (1/3) ... [2021-11-20 06:53:21,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b275ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:53:21, skipping insertion in model container [2021-11-20 06:53:21,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:53:19" (2/3) ... [2021-11-20 06:53:21,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b275ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:53:21, skipping insertion in model container [2021-11-20 06:53:21,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:53:21" (3/3) ... [2021-11-20 06:53:21,552 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0521.i [2021-11-20 06:53:21,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:53:21,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 152 error locations. [2021-11-20 06:53:21,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:53:21,620 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:53:21,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2021-11-20 06:53:21,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 156 states have (on average 2.2115384615384617) internal successors, (345), 308 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:53:21,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:21,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:53:21,659 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 28727526, now seen corresponding path program 1 times [2021-11-20 06:53:21,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:21,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818558932] [2021-11-20 06:53:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:21,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:21,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:21,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:21,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:53:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:21,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:53:21,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:21,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:21,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:21,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818558932] [2021-11-20 06:53:21,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818558932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:21,891 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:21,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:53:21,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589156458] [2021-11-20 06:53:21,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:21,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:53:21,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:21,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:53:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:53:21,951 INFO L87 Difference]: Start difference. First operand has 309 states, 156 states have (on average 2.2115384615384617) internal successors, (345), 308 states have internal predecessors, (345), 0 states have call successors, (0), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:22,022 INFO L93 Difference]: Finished difference Result 309 states and 335 transitions. [2021-11-20 06:53:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:53:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:53:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:22,051 INFO L225 Difference]: With dead ends: 309 [2021-11-20 06:53:22,052 INFO L226 Difference]: Without dead ends: 307 [2021-11-20 06:53:22,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:53:22,063 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:22,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:53:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-20 06:53:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-20 06:53:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 155 states have (on average 2.1483870967741936) internal successors, (333), 306 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 333 transitions. [2021-11-20 06:53:22,164 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 333 transitions. Word has length 5 [2021-11-20 06:53:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:22,164 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 333 transitions. [2021-11-20 06:53:22,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:22,166 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 333 transitions. [2021-11-20 06:53:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:53:22,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:22,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:53:22,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:22,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:22,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:22,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash 28698696, now seen corresponding path program 1 times [2021-11-20 06:53:22,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:22,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80957984] [2021-11-20 06:53:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:22,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:22,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:22,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:22,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:53:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:22,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:53:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:22,565 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 [2021-11-20 06:53:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:22,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:22,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:22,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80957984] [2021-11-20 06:53:22,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80957984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:22,605 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:22,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:53:22,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769816724] [2021-11-20 06:53:22,611 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:22,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:53:22,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:53:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:22,618 INFO L87 Difference]: Start difference. First operand 307 states and 333 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:23,409 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2021-11-20 06:53:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:23,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:53:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:23,414 INFO L225 Difference]: With dead ends: 291 [2021-11-20 06:53:23,414 INFO L226 Difference]: Without dead ends: 291 [2021-11-20 06:53:23,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:23,416 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 77 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:23,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 396 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:53:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-20 06:53:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-20 06:53:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 155 states have (on average 2.0451612903225804) internal successors, (317), 290 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2021-11-20 06:53:23,435 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 5 [2021-11-20 06:53:23,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:23,435 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2021-11-20 06:53:23,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2021-11-20 06:53:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:53:23,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:23,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:53:23,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:23,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:23,650 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:23,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash 28698697, now seen corresponding path program 1 times [2021-11-20 06:53:23,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:23,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760724344] [2021-11-20 06:53:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:23,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:23,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:23,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:23,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:53:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:23,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:53:23,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:23,792 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 [2021-11-20 06:53:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:23,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:23,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:23,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760724344] [2021-11-20 06:53:23,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760724344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:23,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:23,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 06:53:23,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356568166] [2021-11-20 06:53:23,880 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:23,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:53:23,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:53:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:23,882 INFO L87 Difference]: Start difference. First operand 291 states and 317 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:25,358 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2021-11-20 06:53:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:25,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:53:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:25,363 INFO L225 Difference]: With dead ends: 275 [2021-11-20 06:53:25,363 INFO L226 Difference]: Without dead ends: 275 [2021-11-20 06:53:25,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:25,365 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 61 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:25,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 540 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 06:53:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-20 06:53:25,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-20 06:53:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 155 states have (on average 1.9419354838709677) internal successors, (301), 274 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2021-11-20 06:53:25,396 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 5 [2021-11-20 06:53:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:25,397 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2021-11-20 06:53:25,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2021-11-20 06:53:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:53:25,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:25,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:53:25,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:25,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:25,611 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash 28699819, now seen corresponding path program 1 times [2021-11-20 06:53:25,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:25,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626935413] [2021-11-20 06:53:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:25,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:25,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:25,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:25,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:53:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:25,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:53:25,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:25,707 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 [2021-11-20 06:53:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:25,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:25,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:25,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626935413] [2021-11-20 06:53:25,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626935413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:25,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:25,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:53:25,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120995012] [2021-11-20 06:53:25,747 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:25,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:53:25,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:53:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:25,753 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:26,459 INFO L93 Difference]: Finished difference Result 329 states and 364 transitions. [2021-11-20 06:53:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:26,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:53:26,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:26,462 INFO L225 Difference]: With dead ends: 329 [2021-11-20 06:53:26,462 INFO L226 Difference]: Without dead ends: 329 [2021-11-20 06:53:26,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:26,464 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 74 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:26,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 471 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:53:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-20 06:53:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 273. [2021-11-20 06:53:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 155 states have (on average 1.929032258064516) internal successors, (299), 272 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 299 transitions. [2021-11-20 06:53:26,484 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 299 transitions. Word has length 5 [2021-11-20 06:53:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:26,485 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 299 transitions. [2021-11-20 06:53:26,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 299 transitions. [2021-11-20 06:53:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:53:26,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:26,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:53:26,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:26,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:26,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:26,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2021-11-20 06:53:26,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:26,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539983859] [2021-11-20 06:53:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:26,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:26,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:26,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:53:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:26,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:53:26,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:26,798 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 [2021-11-20 06:53:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:26,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:26,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:26,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539983859] [2021-11-20 06:53:26,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539983859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:26,910 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:26,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 06:53:26,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235478435] [2021-11-20 06:53:26,911 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:26,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:53:26,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:53:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:26,912 INFO L87 Difference]: Start difference. First operand 273 states and 299 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:28,544 INFO L93 Difference]: Finished difference Result 461 states and 509 transitions. [2021-11-20 06:53:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:53:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:28,550 INFO L225 Difference]: With dead ends: 461 [2021-11-20 06:53:28,550 INFO L226 Difference]: Without dead ends: 461 [2021-11-20 06:53:28,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:28,551 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 436 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:28,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 569 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 06:53:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-20 06:53:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 271. [2021-11-20 06:53:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 155 states have (on average 1.9161290322580644) internal successors, (297), 270 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 297 transitions. [2021-11-20 06:53:28,563 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 297 transitions. Word has length 5 [2021-11-20 06:53:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:28,564 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 297 transitions. [2021-11-20 06:53:28,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:28,564 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 297 transitions. [2021-11-20 06:53:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:53:28,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:28,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:28,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:28,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:28,782 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:28,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:28,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1809643625, now seen corresponding path program 1 times [2021-11-20 06:53:28,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:28,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951574997] [2021-11-20 06:53:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:28,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:28,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:28,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:53:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:28,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:53:28,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:28,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:28,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951574997] [2021-11-20 06:53:28,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951574997] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:28,997 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:28,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:53:28,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018637495] [2021-11-20 06:53:28,997 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:28,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:53:28,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:53:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:28,999 INFO L87 Difference]: Start difference. First operand 271 states and 297 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:29,140 INFO L93 Difference]: Finished difference Result 668 states and 734 transitions. [2021-11-20 06:53:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:53:29,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 06:53:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:29,145 INFO L225 Difference]: With dead ends: 668 [2021-11-20 06:53:29,145 INFO L226 Difference]: Without dead ends: 668 [2021-11-20 06:53:29,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:53:29,147 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 587 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:29,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 855 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:53:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-20 06:53:29,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 275. [2021-11-20 06:53:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 159 states have (on average 1.89937106918239) internal successors, (302), 274 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 302 transitions. [2021-11-20 06:53:29,159 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 302 transitions. Word has length 7 [2021-11-20 06:53:29,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:29,160 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 302 transitions. [2021-11-20 06:53:29,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 302 transitions. [2021-11-20 06:53:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:53:29,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:29,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:29,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:29,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:29,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash 642085168, now seen corresponding path program 1 times [2021-11-20 06:53:29,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:29,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144553130] [2021-11-20 06:53:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:29,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:29,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:29,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:29,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:53:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:29,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:53:29,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:29,465 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 [2021-11-20 06:53:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:29,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:29,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:29,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144553130] [2021-11-20 06:53:29,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144553130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:29,504 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:29,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:53:29,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212610915] [2021-11-20 06:53:29,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:29,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:53:29,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:29,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:53:29,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:29,506 INFO L87 Difference]: Start difference. First operand 275 states and 302 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:30,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:30,062 INFO L93 Difference]: Finished difference Result 324 states and 358 transitions. [2021-11-20 06:53:30,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:30,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:53:30,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:30,066 INFO L225 Difference]: With dead ends: 324 [2021-11-20 06:53:30,066 INFO L226 Difference]: Without dead ends: 324 [2021-11-20 06:53:30,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:30,068 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 70 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:30,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 464 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:53:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-20 06:53:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 273. [2021-11-20 06:53:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 159 states have (on average 1.8867924528301887) internal successors, (300), 272 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 300 transitions. [2021-11-20 06:53:30,078 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 300 transitions. Word has length 9 [2021-11-20 06:53:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:30,079 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 300 transitions. [2021-11-20 06:53:30,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 300 transitions. [2021-11-20 06:53:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 06:53:30,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:30,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:30,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:30,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:30,290 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash 642085169, now seen corresponding path program 1 times [2021-11-20 06:53:30,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:30,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204686966] [2021-11-20 06:53:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:30,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:30,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:30,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:30,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:53:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:30,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:53:30,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:30,393 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 [2021-11-20 06:53:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:30,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:30,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204686966] [2021-11-20 06:53:30,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204686966] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:30,511 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:30,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 06:53:30,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515262102] [2021-11-20 06:53:30,511 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:30,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:53:30,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:53:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:30,512 INFO L87 Difference]: Start difference. First operand 273 states and 300 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:32,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:32,281 INFO L93 Difference]: Finished difference Result 460 states and 507 transitions. [2021-11-20 06:53:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:53:32,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 06:53:32,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:32,285 INFO L225 Difference]: With dead ends: 460 [2021-11-20 06:53:32,285 INFO L226 Difference]: Without dead ends: 460 [2021-11-20 06:53:32,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:32,287 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 217 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:32,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 722 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:53:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-20 06:53:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 271. [2021-11-20 06:53:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 159 states have (on average 1.8742138364779874) internal successors, (298), 270 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 298 transitions. [2021-11-20 06:53:32,298 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 298 transitions. Word has length 9 [2021-11-20 06:53:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:32,298 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 298 transitions. [2021-11-20 06:53:32,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 298 transitions. [2021-11-20 06:53:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:53:32,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:32,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:32,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:32,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:32,506 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:32,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1904018325, now seen corresponding path program 1 times [2021-11-20 06:53:32,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:32,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484967826] [2021-11-20 06:53:32,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:32,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:32,507 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:32,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:53:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:32,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:53:32,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:32,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:53:32,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:53:32,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-20 06:53:32,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-20 06:53:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:32,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:32,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:32,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484967826] [2021-11-20 06:53:32,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484967826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:32,853 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:32,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 06:53:32,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777129536] [2021-11-20 06:53:32,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:32,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:53:32,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:53:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:53:32,855 INFO L87 Difference]: Start difference. First operand 271 states and 298 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:33,708 INFO L93 Difference]: Finished difference Result 656 states and 722 transitions. [2021-11-20 06:53:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:53:33,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:53:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:33,721 INFO L225 Difference]: With dead ends: 656 [2021-11-20 06:53:33,724 INFO L226 Difference]: Without dead ends: 656 [2021-11-20 06:53:33,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:53:33,727 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 566 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:33,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1338 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:53:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-20 06:53:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 274. [2021-11-20 06:53:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 162 states have (on average 1.8580246913580247) internal successors, (301), 273 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 301 transitions. [2021-11-20 06:53:33,743 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 301 transitions. Word has length 12 [2021-11-20 06:53:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:33,743 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 301 transitions. [2021-11-20 06:53:33,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 301 transitions. [2021-11-20 06:53:33,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:53:33,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:33,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:33,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:33,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:33,958 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 94773195, now seen corresponding path program 1 times [2021-11-20 06:53:33,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:33,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101160156] [2021-11-20 06:53:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:33,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:33,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:33,961 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:33,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:53:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:34,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:53:34,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:34,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:34,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:34,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101160156] [2021-11-20 06:53:34,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101160156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:34,277 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:34,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:53:34,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490974933] [2021-11-20 06:53:34,278 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:34,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:53:34,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:53:34,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:53:34,280 INFO L87 Difference]: Start difference. First operand 274 states and 301 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:34,517 INFO L93 Difference]: Finished difference Result 402 states and 440 transitions. [2021-11-20 06:53:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:53:34,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:53:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:34,520 INFO L225 Difference]: With dead ends: 402 [2021-11-20 06:53:34,520 INFO L226 Difference]: Without dead ends: 402 [2021-11-20 06:53:34,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:53:34,521 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 236 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:34,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1100 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:53:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-11-20 06:53:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 338. [2021-11-20 06:53:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 226 states have (on average 1.8982300884955752) internal successors, (429), 337 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 429 transitions. [2021-11-20 06:53:34,534 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 429 transitions. Word has length 14 [2021-11-20 06:53:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:34,535 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 429 transitions. [2021-11-20 06:53:34,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 429 transitions. [2021-11-20 06:53:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:53:34,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:34,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:34,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:34,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:34,745 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1350258318, now seen corresponding path program 1 times [2021-11-20 06:53:34,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:34,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332452159] [2021-11-20 06:53:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:34,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:34,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:34,748 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:34,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:53:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:34,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:53:34,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:34,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:34,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332452159] [2021-11-20 06:53:34,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332452159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:34,892 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:34,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:53:34,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895526989] [2021-11-20 06:53:34,892 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:34,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:53:34,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:53:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:34,894 INFO L87 Difference]: Start difference. First operand 338 states and 429 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:34,913 INFO L93 Difference]: Finished difference Result 323 states and 404 transitions. [2021-11-20 06:53:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:34,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:53:34,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:34,916 INFO L225 Difference]: With dead ends: 323 [2021-11-20 06:53:34,916 INFO L226 Difference]: Without dead ends: 323 [2021-11-20 06:53:34,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:34,917 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 220 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:34,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 356 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:53:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-20 06:53:34,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-11-20 06:53:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 211 states have (on average 1.914691943127962) internal successors, (404), 322 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 404 transitions. [2021-11-20 06:53:34,927 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 404 transitions. Word has length 15 [2021-11-20 06:53:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:34,927 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 404 transitions. [2021-11-20 06:53:34,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 404 transitions. [2021-11-20 06:53:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:53:34,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:34,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:34,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:35,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:35,133 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash 882923631, now seen corresponding path program 1 times [2021-11-20 06:53:35,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:35,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208416614] [2021-11-20 06:53:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:35,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:35,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:35,136 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:35,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:53:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:35,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:53:35,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:35,252 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 [2021-11-20 06:53:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:35,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:35,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:35,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208416614] [2021-11-20 06:53:35,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208416614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:35,313 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:35,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:53:35,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789436385] [2021-11-20 06:53:35,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:35,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:53:35,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:53:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:35,315 INFO L87 Difference]: Start difference. First operand 323 states and 404 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:35,855 INFO L93 Difference]: Finished difference Result 307 states and 372 transitions. [2021-11-20 06:53:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:53:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:35,858 INFO L225 Difference]: With dead ends: 307 [2021-11-20 06:53:35,858 INFO L226 Difference]: Without dead ends: 307 [2021-11-20 06:53:35,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:53:35,859 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 77 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:35,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 336 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:53:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-20 06:53:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-11-20 06:53:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 211 states have (on average 1.7630331753554502) internal successors, (372), 306 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 372 transitions. [2021-11-20 06:53:35,869 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 372 transitions. Word has length 16 [2021-11-20 06:53:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:35,869 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 372 transitions. [2021-11-20 06:53:35,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 372 transitions. [2021-11-20 06:53:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:53:35,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:35,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:35,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:36,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:36,081 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:36,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:36,082 INFO L85 PathProgramCache]: Analyzing trace with hash 882923632, now seen corresponding path program 1 times [2021-11-20 06:53:36,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:36,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768558232] [2021-11-20 06:53:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:36,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:36,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:36,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:36,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:53:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:36,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:53:36,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:36,204 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 [2021-11-20 06:53:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:36,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:36,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:36,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768558232] [2021-11-20 06:53:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768558232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:36,300 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:36,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 06:53:36,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301343852] [2021-11-20 06:53:36,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:36,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:53:36,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:53:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:36,302 INFO L87 Difference]: Start difference. First operand 307 states and 372 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:37,059 INFO L93 Difference]: Finished difference Result 291 states and 340 transitions. [2021-11-20 06:53:37,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:53:37,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:53:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:37,061 INFO L225 Difference]: With dead ends: 291 [2021-11-20 06:53:37,061 INFO L226 Difference]: Without dead ends: 291 [2021-11-20 06:53:37,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:53:37,062 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 122 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:37,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 345 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:53:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-20 06:53:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-11-20 06:53:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 211 states have (on average 1.6113744075829384) internal successors, (340), 290 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 340 transitions. [2021-11-20 06:53:37,072 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 340 transitions. Word has length 16 [2021-11-20 06:53:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:37,072 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 340 transitions. [2021-11-20 06:53:37,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 340 transitions. [2021-11-20 06:53:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:53:37,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:37,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:37,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:37,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:37,294 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:37,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:37,294 INFO L85 PathProgramCache]: Analyzing trace with hash -276171814, now seen corresponding path program 1 times [2021-11-20 06:53:37,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:37,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371580049] [2021-11-20 06:53:37,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:37,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:37,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:37,296 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:37,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:53:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:37,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:53:37,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:37,429 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 [2021-11-20 06:53:37,510 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:53:37,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-20 06:53:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:37,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:45,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:45,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371580049] [2021-11-20 06:53:45,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371580049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:45,925 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:45,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 06:53:45,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265643732] [2021-11-20 06:53:45,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:45,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:53:45,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:53:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=37, Unknown=3, NotChecked=0, Total=56 [2021-11-20 06:53:45,927 INFO L87 Difference]: Start difference. First operand 291 states and 340 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:46,824 INFO L93 Difference]: Finished difference Result 300 states and 350 transitions. [2021-11-20 06:53:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:53:46,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:53:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:46,827 INFO L225 Difference]: With dead ends: 300 [2021-11-20 06:53:46,827 INFO L226 Difference]: Without dead ends: 300 [2021-11-20 06:53:46,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=28, Invalid=59, Unknown=3, NotChecked=0, Total=90 [2021-11-20 06:53:46,828 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 17 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:46,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 794 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 260 Unchecked, 0.8s Time] [2021-11-20 06:53:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-20 06:53:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2021-11-20 06:53:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 211 states have (on average 1.6066350710900474) internal successors, (339), 289 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 339 transitions. [2021-11-20 06:53:46,837 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 339 transitions. Word has length 16 [2021-11-20 06:53:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:46,837 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 339 transitions. [2021-11-20 06:53:46,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 339 transitions. [2021-11-20 06:53:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:53:46,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:46,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:46,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:47,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:47,051 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash -276171813, now seen corresponding path program 1 times [2021-11-20 06:53:47,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:47,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480859569] [2021-11-20 06:53:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:47,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:47,054 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:47,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:53:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:47,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:53:47,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:47,220 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 [2021-11-20 06:53:47,226 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 [2021-11-20 06:53:47,367 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:53:47,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-20 06:53:47,398 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:53:47,398 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 26 treesize of output 26 [2021-11-20 06:53:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:47,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:48,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480859569] [2021-11-20 06:53:48,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480859569] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:48,609 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:48,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 06:53:48,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210364912] [2021-11-20 06:53:48,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:48,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:53:48,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:53:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:53:48,612 INFO L87 Difference]: Start difference. First operand 290 states and 339 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:50,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:50,247 INFO L93 Difference]: Finished difference Result 305 states and 357 transitions. [2021-11-20 06:53:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:53:50,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:53:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:50,250 INFO L225 Difference]: With dead ends: 305 [2021-11-20 06:53:50,250 INFO L226 Difference]: Without dead ends: 305 [2021-11-20 06:53:50,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:53:50,251 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 17 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:50,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 857 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 275 Invalid, 0 Unknown, 457 Unchecked, 1.5s Time] [2021-11-20 06:53:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-20 06:53:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 289. [2021-11-20 06:53:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 211 states have (on average 1.6018957345971565) internal successors, (338), 288 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 338 transitions. [2021-11-20 06:53:50,261 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 338 transitions. Word has length 16 [2021-11-20 06:53:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:50,261 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 338 transitions. [2021-11-20 06:53:50,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 338 transitions. [2021-11-20 06:53:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:53:50,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:50,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:50,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-20 06:53:50,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:50,493 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:50,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1913905968, now seen corresponding path program 1 times [2021-11-20 06:53:50,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:50,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110135534] [2021-11-20 06:53:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:50,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:50,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:50,496 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:50,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:53:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:50,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:53:50,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:50,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:50,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:50,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110135534] [2021-11-20 06:53:50,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110135534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:50,897 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:53:50,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187552469] [2021-11-20 06:53:50,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:50,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:53:50,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:53:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:53:50,898 INFO L87 Difference]: Start difference. First operand 289 states and 338 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:51,187 INFO L93 Difference]: Finished difference Result 386 states and 427 transitions. [2021-11-20 06:53:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:53:51,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 06:53:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:51,190 INFO L225 Difference]: With dead ends: 386 [2021-11-20 06:53:51,190 INFO L226 Difference]: Without dead ends: 386 [2021-11-20 06:53:51,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:53:51,191 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 276 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:51,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 966 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:53:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-20 06:53:51,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 286. [2021-11-20 06:53:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 208 states have (on average 1.5961538461538463) internal successors, (332), 285 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 332 transitions. [2021-11-20 06:53:51,209 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 332 transitions. Word has length 18 [2021-11-20 06:53:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:51,209 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 332 transitions. [2021-11-20 06:53:51,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 332 transitions. [2021-11-20 06:53:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 06:53:51,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:51,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:53:51,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:51,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:51,428 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1787332292, now seen corresponding path program 1 times [2021-11-20 06:53:51,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:51,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726455807] [2021-11-20 06:53:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:51,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:51,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:51,430 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:51,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 06:53:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:51,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:53:51,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:51,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:51,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:51,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726455807] [2021-11-20 06:53:51,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726455807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:51,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:51,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:53:51,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807894726] [2021-11-20 06:53:51,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:51,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:53:51,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:53:51,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:53:51,677 INFO L87 Difference]: Start difference. First operand 286 states and 332 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:51,898 INFO L93 Difference]: Finished difference Result 309 states and 341 transitions. [2021-11-20 06:53:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:53:51,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 06:53:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:51,902 INFO L225 Difference]: With dead ends: 309 [2021-11-20 06:53:51,902 INFO L226 Difference]: Without dead ends: 309 [2021-11-20 06:53:51,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:53:51,903 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 657 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:51,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 638 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:53:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-20 06:53:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 286. [2021-11-20 06:53:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 208 states have (on average 1.5913461538461537) internal successors, (331), 285 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 331 transitions. [2021-11-20 06:53:51,913 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 331 transitions. Word has length 21 [2021-11-20 06:53:51,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:51,914 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 331 transitions. [2021-11-20 06:53:51,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 331 transitions. [2021-11-20 06:53:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:53:51,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:51,915 INFO L514 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] [2021-11-20 06:53:51,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:53:52,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:52,134 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:52,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1853899934, now seen corresponding path program 1 times [2021-11-20 06:53:52,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:52,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924089227] [2021-11-20 06:53:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:52,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:52,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:52,136 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 06:53:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:52,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 06:53:52,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:52,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:53:52,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:53:52,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-20 06:53:52,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-20 06:53:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:52,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:53:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:53:52,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:53:52,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924089227] [2021-11-20 06:53:52,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924089227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:53:52,676 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:53:52,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-20 06:53:52,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940157529] [2021-11-20 06:53:52,676 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:53:52,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:53:52,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:53:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:53:52,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:53:52,677 INFO L87 Difference]: Start difference. First operand 286 states and 331 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:53:53,578 INFO L93 Difference]: Finished difference Result 382 states and 422 transitions. [2021-11-20 06:53:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:53:53,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-20 06:53:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:53:53,582 INFO L225 Difference]: With dead ends: 382 [2021-11-20 06:53:53,582 INFO L226 Difference]: Without dead ends: 382 [2021-11-20 06:53:53,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:53:53,583 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 251 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:53:53,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1383 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:53:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-20 06:53:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 272. [2021-11-20 06:53:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 194 states have (on average 1.5876288659793814) internal successors, (308), 271 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 308 transitions. [2021-11-20 06:53:53,591 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 308 transitions. Word has length 23 [2021-11-20 06:53:53,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:53:53,592 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 308 transitions. [2021-11-20 06:53:53,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:53:53,592 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 308 transitions. [2021-11-20 06:53:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:53:53,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:53:53,593 INFO L514 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] [2021-11-20 06:53:53,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-20 06:53:53,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:53:53,807 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:53:53,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:53:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash 984415872, now seen corresponding path program 1 times [2021-11-20 06:53:53,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:53:53,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270561232] [2021-11-20 06:53:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:53:53,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:53:53,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:53:53,810 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:53:53,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 06:53:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:53:54,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:53:54,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:53:54,029 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-20 06:53:54,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2021-11-20 06:53:54,278 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 06:53:54,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 66 [2021-11-20 06:53:54,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-11-20 06:53:55,245 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:53:55,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 87 [2021-11-20 06:53:56,209 INFO L354 Elim1Store]: treesize reduction 77, result has 36.9 percent of original size [2021-11-20 06:53:56,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 101 treesize of output 132 [2021-11-20 06:53:57,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 104 [2021-11-20 06:53:59,643 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-20 06:53:59,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 139 [2021-11-20 06:54:04,143 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:54:04,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 131 [2021-11-20 06:54:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:54:06,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:54:08,513 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#iter~0#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#iter~0#1.base|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|)) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) (_ bv1 1)))) is different from false [2021-11-20 06:54:10,533 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_72| (_ BitVec 32)) (|ULTIMATE.start_main_~#iter~0#1.offset| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_72|)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_72|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~data~0#1.base|)) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|)))))))) (_ bv1 1))))) is different from false [2021-11-20 06:54:12,577 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_72| (_ BitVec 32)) (|ULTIMATE.start_main_~#iter~0#1.offset| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~#iter~0#1.base_72|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_72|)))))) is different from false [2021-11-20 06:54:14,614 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#iter~0#1.base_72| (_ BitVec 32)) (|ULTIMATE.start_main_~#iter~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_72| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|) |ULTIMATE.start_main_~data~0#1.base|)))) (store .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_72| (store (select .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_72|) |ULTIMATE.start_main_~#iter~0#1.offset| |c_ULTIMATE.start_main_~item~0#1.base|))) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_72|)))))) is different from false [2021-11-20 06:54:21,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:54:21,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:54:21,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270561232] [2021-11-20 06:54:21,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270561232] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:54:21,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:54:21,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 23 [2021-11-20 06:54:21,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061305128] [2021-11-20 06:54:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:54:21,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:54:21,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:54:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:54:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=332, Unknown=7, NotChecked=156, Total=552 [2021-11-20 06:54:21,289 INFO L87 Difference]: Start difference. First operand 272 states and 308 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:23,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:54:23,243 INFO L93 Difference]: Finished difference Result 273 states and 309 transitions. [2021-11-20 06:54:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:54:23,244 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 06:54:23,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:54:23,245 INFO L225 Difference]: With dead ends: 273 [2021-11-20 06:54:23,246 INFO L226 Difference]: Without dead ends: 273 [2021-11-20 06:54:23,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=84, Invalid=525, Unknown=7, NotChecked=196, Total=812 [2021-11-20 06:54:23,247 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 61 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 761 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:54:23,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 1402 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 619 Invalid, 0 Unknown, 761 Unchecked, 1.6s Time] [2021-11-20 06:54:23,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-20 06:54:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2021-11-20 06:54:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 194 states have (on average 1.5824742268041236) internal successors, (307), 270 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 307 transitions. [2021-11-20 06:54:23,256 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 307 transitions. Word has length 24 [2021-11-20 06:54:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:54:23,256 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 307 transitions. [2021-11-20 06:54:23,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:54:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 307 transitions. [2021-11-20 06:54:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 06:54:23,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:54:23,258 INFO L514 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] [2021-11-20 06:54:23,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:54:23,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:54:23,484 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:54:23,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:54:23,485 INFO L85 PathProgramCache]: Analyzing trace with hash 984415873, now seen corresponding path program 1 times [2021-11-20 06:54:23,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:54:23,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731677011] [2021-11-20 06:54:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:54:23,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:54:23,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:54:23,487 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:54:23,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 06:54:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:54:23,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 06:54:23,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:54:23,678 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 [2021-11-20 06:54:23,686 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 [2021-11-20 06:54:23,770 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:54:23,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:54:23,811 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:54:23,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-20 06:54:23,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:54:23,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-11-20 06:54:24,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:54:24,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:54:24,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:54:24,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2021-11-20 06:54:24,296 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-20 06:54:24,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 47 [2021-11-20 06:54:24,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-20 06:54:24,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 06:54:24,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-11-20 06:54:24,842 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-20 06:54:24,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 80 [2021-11-20 06:54:24,883 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:54:24,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 103 [2021-11-20 06:54:25,323 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:54:25,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 75 [2021-11-20 06:54:25,333 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:54:25,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 40 [2021-11-20 06:54:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:54:25,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:55:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:16,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:55:16,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731677011] [2021-11-20 06:55:16,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731677011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:55:16,341 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:55:16,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 12] imperfect sequences [] total 22 [2021-11-20 06:55:16,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454673007] [2021-11-20 06:55:16,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:55:16,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 06:55:16,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:55:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 06:55:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=433, Unknown=12, NotChecked=0, Total=506 [2021-11-20 06:55:16,344 INFO L87 Difference]: Start difference. First operand 271 states and 307 transitions. Second operand has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:55:24,330 INFO L93 Difference]: Finished difference Result 347 states and 398 transitions. [2021-11-20 06:55:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:55:24,332 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 06:55:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:55:24,334 INFO L225 Difference]: With dead ends: 347 [2021-11-20 06:55:24,334 INFO L226 Difference]: Without dead ends: 347 [2021-11-20 06:55:24,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=134, Invalid=784, Unknown=12, NotChecked=0, Total=930 [2021-11-20 06:55:24,336 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 218 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1349 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:55:24,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 2137 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 911 Invalid, 0 Unknown, 1349 Unchecked, 5.5s Time] [2021-11-20 06:55:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-20 06:55:24,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 270. [2021-11-20 06:55:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 194 states have (on average 1.577319587628866) internal successors, (306), 269 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 306 transitions. [2021-11-20 06:55:24,344 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 306 transitions. Word has length 24 [2021-11-20 06:55:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:55:24,345 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 306 transitions. [2021-11-20 06:55:24,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 306 transitions. [2021-11-20 06:55:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 06:55:24,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:55:24,346 INFO L514 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] [2021-11-20 06:55:24,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-20 06:55:24,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:55:24,561 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr151ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:55:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:55:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash -824348362, now seen corresponding path program 1 times [2021-11-20 06:55:24,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:55:24,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154305173] [2021-11-20 06:55:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:55:24,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:55:24,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:55:24,563 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:55:24,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 06:55:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:55:24,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:55:24,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:55:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:24,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:55:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:33,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:55:33,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154305173] [2021-11-20 06:55:33,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154305173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:55:33,387 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:55:33,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 06:55:33,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778062695] [2021-11-20 06:55:33,387 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:55:33,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:55:33,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:55:33,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:55:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-20 06:55:33,389 INFO L87 Difference]: Start difference. First operand 270 states and 306 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:55:33,976 INFO L93 Difference]: Finished difference Result 276 states and 312 transitions. [2021-11-20 06:55:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:55:33,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-20 06:55:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:55:33,979 INFO L225 Difference]: With dead ends: 276 [2021-11-20 06:55:33,979 INFO L226 Difference]: Without dead ends: 272 [2021-11-20 06:55:33,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-20 06:55:33,980 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 6 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 362 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:55:33,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 787 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 362 Unchecked, 0.6s Time] [2021-11-20 06:55:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-20 06:55:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2021-11-20 06:55:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 195 states have (on average 1.5743589743589743) internal successors, (307), 270 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 307 transitions. [2021-11-20 06:55:33,988 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 307 transitions. Word has length 25 [2021-11-20 06:55:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:55:33,989 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 307 transitions. [2021-11-20 06:55:33,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 307 transitions. [2021-11-20 06:55:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 06:55:33,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:55:33,990 INFO L514 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] [2021-11-20 06:55:34,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:55:34,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:55:34,203 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:55:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:55:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 221644505, now seen corresponding path program 1 times [2021-11-20 06:55:34,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:55:34,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355872655] [2021-11-20 06:55:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:55:34,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:55:34,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:55:34,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:55:34,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 06:55:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:55:34,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:55:34,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:55:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:34,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:55:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:34,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:55:34,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355872655] [2021-11-20 06:55:34,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355872655] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:55:34,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:55:34,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:55:34,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299841285] [2021-11-20 06:55:34,400 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:55:34,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:55:34,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:55:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:55:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:55:34,402 INFO L87 Difference]: Start difference. First operand 271 states and 307 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:55:34,428 INFO L93 Difference]: Finished difference Result 253 states and 278 transitions. [2021-11-20 06:55:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:55:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 06:55:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:55:34,430 INFO L225 Difference]: With dead ends: 253 [2021-11-20 06:55:34,431 INFO L226 Difference]: Without dead ends: 235 [2021-11-20 06:55:34,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:55:34,432 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 32 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:55:34,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 472 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:55:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-20 06:55:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-11-20 06:55:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 159 states have (on average 1.6352201257861636) internal successors, (260), 234 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 260 transitions. [2021-11-20 06:55:34,440 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 260 transitions. Word has length 26 [2021-11-20 06:55:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:55:34,440 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 260 transitions. [2021-11-20 06:55:34,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 260 transitions. [2021-11-20 06:55:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 06:55:34,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:55:34,441 INFO L514 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] [2021-11-20 06:55:34,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-20 06:55:34,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:55:34,656 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:55:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:55:34,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1120078838, now seen corresponding path program 1 times [2021-11-20 06:55:34,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:55:34,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756738956] [2021-11-20 06:55:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:55:34,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:55:34,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:55:34,659 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:55:34,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 06:55:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:55:34,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:55:34,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:55:34,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-20 06:55:34,928 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:55:34,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-20 06:55:34,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-20 06:55:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:34,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:55:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:35,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:55:35,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756738956] [2021-11-20 06:55:35,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756738956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:55:35,111 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:55:35,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-20 06:55:35,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259815097] [2021-11-20 06:55:35,112 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:55:35,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:55:35,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:55:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:55:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:55:35,113 INFO L87 Difference]: Start difference. First operand 235 states and 260 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:55:36,011 INFO L93 Difference]: Finished difference Result 260 states and 287 transitions. [2021-11-20 06:55:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:55:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 06:55:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:55:36,016 INFO L225 Difference]: With dead ends: 260 [2021-11-20 06:55:36,016 INFO L226 Difference]: Without dead ends: 260 [2021-11-20 06:55:36,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:55:36,017 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 711 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:55:36,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 742 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:55:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-20 06:55:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 235. [2021-11-20 06:55:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 159 states have (on average 1.628930817610063) internal successors, (259), 234 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 259 transitions. [2021-11-20 06:55:36,024 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 259 transitions. Word has length 26 [2021-11-20 06:55:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:55:36,024 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 259 transitions. [2021-11-20 06:55:36,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 259 transitions. [2021-11-20 06:55:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 06:55:36,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:55:36,025 INFO L514 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] [2021-11-20 06:55:36,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:55:36,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:55:36,226 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:55:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:55:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash 119440586, now seen corresponding path program 1 times [2021-11-20 06:55:36,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:55:36,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540929719] [2021-11-20 06:55:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:55:36,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:55:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:55:36,229 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:55:36,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 06:55:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:55:36,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:55:36,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:55:36,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:55:36,510 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:55:36,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-20 06:55:36,570 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:55:36,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-20 06:55:36,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-20 06:55:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:55:36,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:55:36,717 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-20 06:55:36,718 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 25 treesize of output 24 [2021-11-20 06:55:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:55:36,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:55:36,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540929719] [2021-11-20 06:55:36,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540929719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:55:36,752 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:55:36,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:55:36,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140566777] [2021-11-20 06:55:36,752 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:55:36,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:55:36,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:55:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:55:36,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:55:36,754 INFO L87 Difference]: Start difference. First operand 235 states and 259 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2021-11-20 06:55:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:55:37,931 INFO L93 Difference]: Finished difference Result 251 states and 278 transitions. [2021-11-20 06:55:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:55:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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 [2021-11-20 06:55:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:55:37,933 INFO L225 Difference]: With dead ends: 251 [2021-11-20 06:55:37,933 INFO L226 Difference]: Without dead ends: 251 [2021-11-20 06:55:37,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:55:37,934 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 51 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:55:37,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 655 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:55:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-20 06:55:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 234. [2021-11-20 06:55:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 159 states have (on average 1.6226415094339623) internal successors, (258), 233 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 258 transitions. [2021-11-20 06:55:37,941 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 258 transitions. Word has length 28 [2021-11-20 06:55:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:55:37,941 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 258 transitions. [2021-11-20 06:55:37,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 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) [2021-11-20 06:55:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 258 transitions. [2021-11-20 06:55:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 06:55:37,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:55:37,943 INFO L514 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] [2021-11-20 06:55:37,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 06:55:38,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:55:38,156 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:55:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:55:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash 119440587, now seen corresponding path program 1 times [2021-11-20 06:55:38,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:55:38,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301336294] [2021-11-20 06:55:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:55:38,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:55:38,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:55:38,158 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:55:38,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 06:55:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:55:38,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:55:38,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:55:38,374 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 [2021-11-20 06:55:38,381 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 [2021-11-20 06:55:38,501 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:55:38,502 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 17 treesize of output 17 [2021-11-20 06:55:38,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 06:55:38,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 06:55:38,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 06:55:38,713 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:55:38,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2021-11-20 06:55:38,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:55:38,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:55:38,917 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 06:55:38,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-20 06:55:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:55:38,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-20 06:55:38,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-11-20 06:55:38,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-20 06:55:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:39,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:55:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:42,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:55:42,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301336294] [2021-11-20 06:55:42,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301336294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:55:42,731 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:55:42,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 06:55:42,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516659091] [2021-11-20 06:55:42,732 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:55:42,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:55:42,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:55:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:55:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:55:42,733 INFO L87 Difference]: Start difference. First operand 234 states and 258 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:55:45,631 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2021-11-20 06:55:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:55:45,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2021-11-20 06:55:45,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:55:45,635 INFO L225 Difference]: With dead ends: 270 [2021-11-20 06:55:45,635 INFO L226 Difference]: Without dead ends: 270 [2021-11-20 06:55:45,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:55:45,636 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 130 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:55:45,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1026 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 438 Invalid, 0 Unknown, 454 Unchecked, 2.6s Time] [2021-11-20 06:55:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-20 06:55:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 233. [2021-11-20 06:55:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 159 states have (on average 1.6163522012578617) internal successors, (257), 232 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 257 transitions. [2021-11-20 06:55:45,644 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 257 transitions. Word has length 28 [2021-11-20 06:55:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:55:45,644 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 257 transitions. [2021-11-20 06:55:45,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 257 transitions. [2021-11-20 06:55:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:55:45,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:55:45,645 INFO L514 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] [2021-11-20 06:55:45,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:55:45,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:55:45,860 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:55:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:55:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1996547125, now seen corresponding path program 1 times [2021-11-20 06:55:45,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:55:45,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189130883] [2021-11-20 06:55:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:55:45,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:55:45,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:55:45,862 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:55:45,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 06:55:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:55:45,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:55:45,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:55:46,017 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:55:46,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 06:55:46,145 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:55:46,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 46 [2021-11-20 06:55:46,357 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 06:55:46,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 48 [2021-11-20 06:55:46,673 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-20 06:55:46,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2021-11-20 06:55:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:46,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:55:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:55:46,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:55:46,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189130883] [2021-11-20 06:55:46,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189130883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:55:46,923 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:55:46,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-11-20 06:55:46,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779501287] [2021-11-20 06:55:46,924 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:55:46,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:55:46,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:55:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:55:46,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:55:46,925 INFO L87 Difference]: Start difference. First operand 233 states and 257 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:55:47,517 INFO L93 Difference]: Finished difference Result 256 states and 283 transitions. [2021-11-20 06:55:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:55:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-20 06:55:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:55:47,519 INFO L225 Difference]: With dead ends: 256 [2021-11-20 06:55:47,519 INFO L226 Difference]: Without dead ends: 256 [2021-11-20 06:55:47,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:55:47,521 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 277 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:55:47,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 716 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 128 Unchecked, 0.6s Time] [2021-11-20 06:55:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-20 06:55:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 234. [2021-11-20 06:55:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 160 states have (on average 1.6125) internal successors, (258), 233 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 258 transitions. [2021-11-20 06:55:47,527 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 258 transitions. Word has length 31 [2021-11-20 06:55:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:55:47,527 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 258 transitions. [2021-11-20 06:55:47,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:55:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 258 transitions. [2021-11-20 06:55:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 06:55:47,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:55:47,529 INFO L514 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] [2021-11-20 06:55:47,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-20 06:55:47,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:55:47,742 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:55:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:55:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1753849390, now seen corresponding path program 1 times [2021-11-20 06:55:47,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:55:47,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709033864] [2021-11-20 06:55:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:55:47,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:55:47,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:55:47,744 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:55:47,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 06:55:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:55:47,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 06:55:47,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:55:47,989 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 [2021-11-20 06:55:48,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:55:48,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:55:48,196 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:55:48,196 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 18 treesize of output 18 [2021-11-20 06:55:48,292 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:55:48,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2021-11-20 06:55:48,312 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-20 06:55:48,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-20 06:55:48,458 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:55:48,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 66 [2021-11-20 06:55:48,501 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-20 06:55:48,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 06:55:48,710 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:55:48,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 66 [2021-11-20 06:55:48,782 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-20 06:55:48,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 06:55:48,942 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-11-20 06:55:48,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 44 [2021-11-20 06:55:48,965 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 06:55:48,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 25 [2021-11-20 06:55:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:55:49,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:56:31,850 INFO L354 Elim1Store]: treesize reduction 106, result has 22.1 percent of original size [2021-11-20 06:56:31,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1941 treesize of output 1579 [2021-11-20 06:56:31,890 INFO L354 Elim1Store]: treesize reduction 94, result has 9.6 percent of original size [2021-11-20 06:56:31,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 2217 treesize of output 1753 [2021-11-20 06:56:31,938 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:56:31,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1753 treesize of output 1669 [2021-11-20 06:56:31,985 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:56:31,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1669 treesize of output 1583 [2021-11-20 06:56:32,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-20 06:56:32,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2021-11-20 06:56:36,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:56:36,017 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 385 treesize of output 389 [2021-11-20 06:56:36,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 123 [2021-11-20 06:56:36,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-11-20 06:56:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:56:36,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:56:36,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709033864] [2021-11-20 06:56:36,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709033864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:56:36,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:56:36,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2021-11-20 06:56:36,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562586878] [2021-11-20 06:56:36,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:56:36,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 06:56:36,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:56:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 06:56:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=219, Unknown=13, NotChecked=0, Total=272 [2021-11-20 06:56:36,943 INFO L87 Difference]: Start difference. First operand 234 states and 258 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:56:38,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:56:38,742 INFO L93 Difference]: Finished difference Result 282 states and 311 transitions. [2021-11-20 06:56:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:56:38,744 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-20 06:56:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:56:38,745 INFO L225 Difference]: With dead ends: 282 [2021-11-20 06:56:38,745 INFO L226 Difference]: Without dead ends: 282 [2021-11-20 06:56:38,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=60, Invalid=307, Unknown=13, NotChecked=0, Total=380 [2021-11-20 06:56:38,747 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 55 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 498 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:56:38,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1683 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 393 Invalid, 0 Unknown, 498 Unchecked, 1.6s Time] [2021-11-20 06:56:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-20 06:56:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 261. [2021-11-20 06:56:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 187 states have (on average 1.53475935828877) internal successors, (287), 260 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:56:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 287 transitions. [2021-11-20 06:56:38,754 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 287 transitions. Word has length 32 [2021-11-20 06:56:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:56:38,755 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 287 transitions. [2021-11-20 06:56:38,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:56:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 287 transitions. [2021-11-20 06:56:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 06:56:38,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:56:38,756 INFO L514 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] [2021-11-20 06:56:38,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 06:56:38,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:56:38,969 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 148 more)] === [2021-11-20 06:56:38,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:56:38,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1770158664, now seen corresponding path program 1 times [2021-11-20 06:56:38,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:56:38,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539939526] [2021-11-20 06:56:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:56:38,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:56:38,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:56:38,971 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:56:38,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce262e70-46a3-4542-ae3c-476ebae87ad5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 06:56:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:56:39,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 06:56:39,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:56:39,197 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-20 06:56:39,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 24 [2021-11-20 06:56:39,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:56:39,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:56:39,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:56:39,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:56:39,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:56:39,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-20 06:56:39,595 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 06:56:39,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 55 [2021-11-20 06:56:40,148 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 06:56:40,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2021-11-20 06:56:40,183 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-20 06:56:40,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 98 [2021-11-20 06:56:40,659 INFO L354 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2021-11-20 06:56:40,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 123 treesize of output 112 [2021-11-20 06:56:40,705 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:56:40,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 112 [2021-11-20 06:56:41,878 INFO L354 Elim1Store]: treesize reduction 77, result has 36.9 percent of original size [2021-11-20 06:56:41,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 84 treesize of output 115 [2021-11-20 06:56:42,857 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:56:42,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 140 [2021-11-20 06:56:42,871 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-20 06:56:42,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 153 [2021-11-20 06:56:45,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:56:45,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:56:46,027 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-20 06:56:46,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 290 treesize of output 205 [2021-11-20 06:56:46,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:56:46,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:56:46,089 INFO L354 Elim1Store]: treesize reduction 112, result has 18.2 percent of original size [2021-11-20 06:56:46,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 250 treesize of output 242 [2021-11-20 06:56:53,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:56:53,439 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 06:56:53,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 56 [2021-11-20 06:56:53,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:56:53,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:56:53,844 INFO L354 Elim1Store]: treesize reduction 90, result has 14.3 percent of original size [2021-11-20 06:56:53,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 221 treesize of output 170 [2021-11-20 06:56:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:56:54,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:58:26,714 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~data~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.base| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) .cse8 |ULTIMATE.start_main_~data~0#1.offset|)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) .cse8 |ULTIMATE.start_main_~data~0#1.base|))) (.cse2 (store (select .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse3 (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse2) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (.cse7 (store (select .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |c_ULTIMATE.start_main_~item~0#1.base|))) (let ((.cse4 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse7) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) .cse3))) (let ((.cse0 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse7 (_ bv4 32) .cse4)) .cse4) .cse5))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ bv1 1)) .cse0)))))))))) (_ bv1 1))) (and (= .cse0 (_ bv0 32)) (= (select (select (store .cse1 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse2 (_ bv4 32) .cse3)) .cse4) .cse5) (_ bv0 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_86|))))))))))) is different from false [2021-11-20 06:58:30,487 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.base| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.offset|) .cse8 |ULTIMATE.start_main_~data~0#1.offset|)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.base|) .cse8 |ULTIMATE.start_main_~data~0#1.base|))) (.cse1 (store (select .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse2 (select (select (store .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse1) |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse7 (store (select .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |c_ULTIMATE.start_main_~item~0#1.base|))) (let ((.cse3 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse7) |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse4 (bvadd (_ bv4 32) .cse2))) (let ((.cse5 (select (select (store .cse6 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse7 (_ bv4 32) .cse3)) .cse3) .cse4))) (or (and (= (_ bv0 32) (select (select (store .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse1 (_ bv4 32) .cse2)) .cse3) .cse4)) (= .cse5 (_ bv0 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_86|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ bv1 1)) .cse5)))))))))))) (_ bv1 1))))))))))) is different from false [2021-11-20 06:58:36,247 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.base_31| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.base| (_ BitVec 32))) (let ((.cse9 (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_31| (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.offset|) .cse9 |ULTIMATE.start_main_~data~0#1.offset|)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_31| (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.base|) .cse9 |ULTIMATE.start_main_~data~0#1.base|))) (.cse3 (store (select .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse4 (select (select (store .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse3) |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse8 (store (select .cse7 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |v_ULTIMATE.start_main_~item~0#1.base_31|))) (let ((.cse5 (select (select (store .cse7 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse8) |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse6 (bvadd .cse4 (_ bv4 32)))) (let ((.cse1 (select (select (store .cse7 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse8 (_ bv4 32) .cse5)) .cse5) .cse6)) (.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_31| (_ bv1 1)))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ bv1 1)) .cse1))))))))))))) (_ bv1 1))) (and (= .cse1 (_ bv0 32)) (= (select (select (store .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse3 (_ bv4 32) .cse4)) .cse5) .cse6) (_ bv0 32))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_86|)))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_31|))))))))))))) is different from false [2021-11-20 06:58:46,721 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.base_31| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ BitVec 32)) (|ULTIMATE.start_main_~data~0#1.base| (_ BitVec 32))) (let ((.cse10 (bvadd (_ bv4 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse2 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~node~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~node~0#1.base|) |c_ULTIMATE.start_main_~node~0#1.offset| v_DerPreprocessor_2)))) (store .cse11 |v_ULTIMATE.start_main_~item~0#1.base_31| (store (store (select .cse11 |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.offset|) .cse10 |ULTIMATE.start_main_~data~0#1.offset|))))) (let ((.cse7 (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~node~0#1.base|) |c_ULTIMATE.start_main_~node~0#1.offset| v_DerPreprocessor_1)))) (store .cse9 |v_ULTIMATE.start_main_~item~0#1.base_31| (store (store (select .cse9 |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~node~0#1.base|) .cse10 |ULTIMATE.start_main_~data~0#1.base|)))) (.cse3 (store (select .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse4 (select (select (store .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse3) |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse8 (store (select .cse7 |v_ULTIMATE.start_main_~#iter~0#1.base_86|) (_ bv0 32) |v_ULTIMATE.start_main_~item~0#1.base_31|))) (let ((.cse5 (select (select (store .cse7 |v_ULTIMATE.start_main_~#iter~0#1.base_86| .cse8) |v_ULTIMATE.start_main_~item~0#1.base_31|) |ULTIMATE.start_main_~item~0#1.offset|)) (.cse6 (bvadd (_ bv4 32) .cse4))) (let ((.cse1 (select (select (store .cse7 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse8 (_ bv4 32) .cse5)) .cse5) .cse6)) (.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_31| (_ bv1 1)))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (_ bv1 1)) .cse1)))))))))))))))) (_ bv1 1))) (and (= (select (select (store .cse2 |v_ULTIMATE.start_main_~#iter~0#1.base_86| (store .cse3 (_ bv4 32) .cse4)) .cse5) .cse6) (_ bv0 32)) (= .cse1 (_ bv0 32))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~#iter~0#1.base_86|)))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_31|))))))))))))) is different from false [2021-11-20 06:59:08,496 WARN L227 SmtUtils]: Spent 21.52s on a formula simplification. DAG size of input: 19 DAG size of output: 8 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:59:08,497 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-11-20 06:59:08,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 459420783 treesize of output 456213623