./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/substring-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/substring-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4cb6276eff0c60579b1d5f7034948eb4f53891709ff48cdd11b3329ec3c4cc2e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:06:52,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:06:52,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:06:52,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:06:52,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:06:52,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:06:52,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:06:52,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:06:52,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:06:52,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:06:52,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:06:52,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:06:52,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:06:52,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:06:52,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:06:52,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:06:52,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:06:52,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:06:52,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:06:52,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:06:52,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:06:52,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:06:52,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:06:52,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:06:52,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:06:52,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:06:52,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:06:52,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:06:52,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:06:52,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:06:52,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:06:52,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:06:52,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:06:52,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:06:52,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:06:52,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:06:52,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:06:52,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:06:52,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:06:52,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:06:52,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:06:52,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 23:06:52,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:06:52,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:06:52,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:06:52,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:06:52,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:06:52,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:06:52,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:06:52,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:06:52,623 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:06:52,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:06:52,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:06:52,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:06:52,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:06:52,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:06:52,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:06:52,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:06:52,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:06:52,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:06:52,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:06:52,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:06:52,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:06:52,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:06:52,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:06:52,625 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_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb6276eff0c60579b1d5f7034948eb4f53891709ff48cdd11b3329ec3c4cc2e [2021-12-06 23:06:52,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:06:52,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:06:52,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:06:52,816 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:06:52,817 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:06:52,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/substring-alloca-2.i [2021-12-06 23:06:52,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/data/c3b004ab1/a7dc9b9df8cc4168a3748e3d6ddca657/FLAG2d725b213 [2021-12-06 23:06:53,355 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:06:53,356 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/sv-benchmarks/c/array-memsafety/substring-alloca-2.i [2021-12-06 23:06:53,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/data/c3b004ab1/a7dc9b9df8cc4168a3748e3d6ddca657/FLAG2d725b213 [2021-12-06 23:06:53,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/data/c3b004ab1/a7dc9b9df8cc4168a3748e3d6ddca657 [2021-12-06 23:06:53,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:06:53,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:06:53,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:06:53,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:06:53,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:06:53,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47241b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53, skipping insertion in model container [2021-12-06 23:06:53,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:06:53,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:06:53,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:06:53,654 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:06:53,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:06:53,707 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:06:53,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53 WrapperNode [2021-12-06 23:06:53,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:06:53,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:06:53,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:06:53,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:06:53,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,740 INFO L137 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2021-12-06 23:06:53,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:06:53,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:06:53,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:06:53,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:06:53,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:06:53,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:06:53,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:06:53,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:06:53,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (1/1) ... [2021-12-06 23:06:53,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:06:53,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:53,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:06:53,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:06:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:06:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:06:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:06:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:06:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:06:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:06:53,877 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:06:53,878 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:06:54,008 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:06:54,013 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:06:54,013 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 23:06:54,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:06:54 BoogieIcfgContainer [2021-12-06 23:06:54,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:06:54,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:06:54,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:06:54,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:06:54,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:06:53" (1/3) ... [2021-12-06 23:06:54,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c642aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:06:54, skipping insertion in model container [2021-12-06 23:06:54,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:06:53" (2/3) ... [2021-12-06 23:06:54,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c642aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:06:54, skipping insertion in model container [2021-12-06 23:06:54,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:06:54" (3/3) ... [2021-12-06 23:06:54,020 INFO L111 eAbstractionObserver]: Analyzing ICFG substring-alloca-2.i [2021-12-06 23:06:54,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:06:54,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-12-06 23:06:54,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:06:54,060 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:06:54,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-12-06 23:06:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.96875) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:06:54,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,076 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2021-12-06 23:06:54,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240956760] [2021-12-06 23:06:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240956760] [2021-12-06 23:06:54,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240956760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:06:54,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116821353] [2021-12-06 23:06:54,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:06:54,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:06:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,261 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.96875) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 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) [2021-12-06 23:06:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:54,299 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2021-12-06 23:06:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:54,302 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 [2021-12-06 23:06:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:54,310 INFO L225 Difference]: With dead ends: 96 [2021-12-06 23:06:54,310 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 23:06:54,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,315 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 94 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:54,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 108 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 23:06:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 53. [2021-12-06 23:06:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-12-06 23:06:54,345 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 7 [2021-12-06 23:06:54,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:54,346 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-12-06 23:06:54,346 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) [2021-12-06 23:06:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-12-06 23:06:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:06:54,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:06:54,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2021-12-06 23:06:54,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024543734] [2021-12-06 23:06:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024543734] [2021-12-06 23:06:54,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024543734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:06:54,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343342236] [2021-12-06 23:06:54,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:06:54,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:06:54,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:06:54,401 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:54,430 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2021-12-06 23:06:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:06:54,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 23:06:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:54,431 INFO L225 Difference]: With dead ends: 51 [2021-12-06 23:06:54,431 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 23:06:54,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:06:54,433 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 45 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:54,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 23:06:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-06 23:06:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-12-06 23:06:54,438 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 7 [2021-12-06 23:06:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:54,438 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-12-06 23:06:54,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-12-06 23:06:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:06:54,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:06:54,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-12-06 23:06:54,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119213092] [2021-12-06 23:06:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119213092] [2021-12-06 23:06:54,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119213092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:06:54,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124894203] [2021-12-06 23:06:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:06:54,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:06:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,496 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:54,573 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2021-12-06 23:06:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:54,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 23:06:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:54,575 INFO L225 Difference]: With dead ends: 93 [2021-12-06 23:06:54,575 INFO L226 Difference]: Without dead ends: 93 [2021-12-06 23:06:54,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:54,576 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 48 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:54,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 94 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-06 23:06:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 53. [2021-12-06 23:06:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-12-06 23:06:54,584 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 7 [2021-12-06 23:06:54,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:54,584 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-12-06 23:06:54,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,585 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-12-06 23:06:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:06:54,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:06:54,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash -533876960, now seen corresponding path program 1 times [2021-12-06 23:06:54,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126891809] [2021-12-06 23:06:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126891809] [2021-12-06 23:06:54,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126891809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:06:54,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509437792] [2021-12-06 23:06:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:06:54,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:06:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,643 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:54,672 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-12-06 23:06:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 23:06:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:54,673 INFO L225 Difference]: With dead ends: 52 [2021-12-06 23:06:54,673 INFO L226 Difference]: Without dead ends: 52 [2021-12-06 23:06:54,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,675 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 93 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:54,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-06 23:06:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-06 23:06:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-12-06 23:06:54,681 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 9 [2021-12-06 23:06:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:54,682 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-12-06 23:06:54,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-12-06 23:06:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:06:54,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:06:54,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,684 INFO L85 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2021-12-06 23:06:54,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349609875] [2021-12-06 23:06:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349609875] [2021-12-06 23:06:54,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349609875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:06:54,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522593252] [2021-12-06 23:06:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:06:54,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:06:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,722 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:54,736 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2021-12-06 23:06:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 23:06:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:54,742 INFO L225 Difference]: With dead ends: 94 [2021-12-06 23:06:54,742 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 23:06:54,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,743 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 74 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:54,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 102 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 23:06:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2021-12-06 23:06:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 62 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2021-12-06 23:06:54,748 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 9 [2021-12-06 23:06:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:54,749 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2021-12-06 23:06:54,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2021-12-06 23:06:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:06:54,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:06:54,750 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2021-12-06 23:06:54,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420589468] [2021-12-06 23:06:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420589468] [2021-12-06 23:06:54,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420589468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:06:54,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245678459] [2021-12-06 23:06:54,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:06:54,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:06:54,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:54,788 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:54,827 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-12-06 23:06:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:06:54,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 23:06:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:54,828 INFO L225 Difference]: With dead ends: 98 [2021-12-06 23:06:54,828 INFO L226 Difference]: Without dead ends: 98 [2021-12-06 23:06:54,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:54,830 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 155 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:54,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 64 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-06 23:06:54,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 61. [2021-12-06 23:06:54,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.553191489361702) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2021-12-06 23:06:54,835 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 9 [2021-12-06 23:06:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:54,835 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2021-12-06 23:06:54,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2021-12-06 23:06:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:06:54,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:06:54,836 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2021-12-06 23:06:54,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32936941] [2021-12-06 23:06:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32936941] [2021-12-06 23:06:54,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32936941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:06:54,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762773061] [2021-12-06 23:06:54,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:06:54,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:06:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:54,884 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:54,940 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2021-12-06 23:06:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:06:54,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 23:06:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:54,942 INFO L225 Difference]: With dead ends: 94 [2021-12-06 23:06:54,942 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 23:06:54,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:06:54,943 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 82 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:54,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 88 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 23:06:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2021-12-06 23:06:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2021-12-06 23:06:54,950 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 9 [2021-12-06 23:06:54,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:54,950 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2021-12-06 23:06:54,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2021-12-06 23:06:54,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 23:06:54,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:54,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:54,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:06:54,952 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash 629683418, now seen corresponding path program 1 times [2021-12-06 23:06:54,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:54,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894230759] [2021-12-06 23:06:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:54,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:54,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894230759] [2021-12-06 23:06:54,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894230759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:54,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:54,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:06:54,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883580566] [2021-12-06 23:06:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:54,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:06:54,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:06:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:54,994 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:55,014 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2021-12-06 23:06:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:55,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-12-06 23:06:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:55,014 INFO L225 Difference]: With dead ends: 62 [2021-12-06 23:06:55,015 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 23:06:55,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:55,015 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:55,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 23:06:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-06 23:06:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.530612244897959) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2021-12-06 23:06:55,019 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 10 [2021-12-06 23:06:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:55,019 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2021-12-06 23:06:55,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2021-12-06 23:06:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 23:06:55,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:55,020 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:55,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:06:55,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-12-06 23:06:55,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:55,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508634612] [2021-12-06 23:06:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:55,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:55,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:55,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508634612] [2021-12-06 23:06:55,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508634612] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:06:55,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520515875] [2021-12-06 23:06:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:55,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:55,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:55,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:55,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:06:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:55,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:06:55,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:55,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:06:55,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:06:55,187 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 10 treesize of output 8 [2021-12-06 23:06:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:55,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:55,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520515875] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:55,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:06:55,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-12-06 23:06:55,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793626393] [2021-12-06 23:06:55,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:55,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:06:55,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:06:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:06:55,424 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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) [2021-12-06 23:06:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:55,556 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2021-12-06 23:06:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:06:55,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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 11 [2021-12-06 23:06:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:55,557 INFO L225 Difference]: With dead ends: 143 [2021-12-06 23:06:55,557 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 23:06:55,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:06:55,558 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 277 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:55,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 233 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 23:06:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 57. [2021-12-06 23:06:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.488888888888889) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-12-06 23:06:55,562 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 11 [2021-12-06 23:06:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:55,562 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-12-06 23:06:55,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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) [2021-12-06 23:06:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-12-06 23:06:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:06:55,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:55,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:55,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:06:55,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:55,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash -464624129, now seen corresponding path program 1 times [2021-12-06 23:06:55,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040715819] [2021-12-06 23:06:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:55,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:55,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040715819] [2021-12-06 23:06:55,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040715819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:55,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:55,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:06:55,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467283308] [2021-12-06 23:06:55,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:55,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:06:55,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:55,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:06:55,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:06:55,807 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) 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) [2021-12-06 23:06:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:55,850 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2021-12-06 23:06:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:06:55,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) 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 [2021-12-06 23:06:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:55,851 INFO L225 Difference]: With dead ends: 81 [2021-12-06 23:06:55,851 INFO L226 Difference]: Without dead ends: 81 [2021-12-06 23:06:55,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:06:55,852 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 230 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:55,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 64 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-06 23:06:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 58. [2021-12-06 23:06:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.5) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-12-06 23:06:55,855 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 12 [2021-12-06 23:06:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:55,855 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-12-06 23:06:55,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) 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) [2021-12-06 23:06:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-12-06 23:06:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:06:55,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:55,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:55,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:06:55,856 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash -464624130, now seen corresponding path program 1 times [2021-12-06 23:06:55,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:55,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796342338] [2021-12-06 23:06:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:55,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:55,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:55,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796342338] [2021-12-06 23:06:55,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796342338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:55,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:55,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:06:55,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288569887] [2021-12-06 23:06:55,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:55,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:06:55,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:06:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:55,876 INFO L87 Difference]: Start difference. First operand 58 states and 69 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) [2021-12-06 23:06:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:55,899 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2021-12-06 23:06:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:55,899 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 12 [2021-12-06 23:06:55,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:55,900 INFO L225 Difference]: With dead ends: 57 [2021-12-06 23:06:55,900 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 23:06:55,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:55,900 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 61 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 49 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 [2021-12-06 23:06:55,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 49 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 23:06:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-06 23:06:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-12-06 23:06:55,903 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 12 [2021-12-06 23:06:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:55,903 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-12-06 23:06:55,903 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) [2021-12-06 23:06:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-12-06 23:06:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:06:55,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:55,904 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:55,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:06:55,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:55,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2021-12-06 23:06:55,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:55,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345870812] [2021-12-06 23:06:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:55,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:55,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:55,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345870812] [2021-12-06 23:06:55,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345870812] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:06:55,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636691283] [2021-12-06 23:06:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:55,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:55,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:55,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:55,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:06:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:55,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:06:55,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:56,015 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:06:56,015 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:06:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:56,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:56,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636691283] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:56,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:06:56,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2021-12-06 23:06:56,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452737699] [2021-12-06 23:06:56,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:56,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:06:56,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:06:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:06:56,205 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:56,320 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2021-12-06 23:06:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:06:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 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 13 [2021-12-06 23:06:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:56,321 INFO L225 Difference]: With dead ends: 115 [2021-12-06 23:06:56,321 INFO L226 Difference]: Without dead ends: 115 [2021-12-06 23:06:56,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:06:56,322 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 225 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:56,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 200 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-12-06 23:06:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 54. [2021-12-06 23:06:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-12-06 23:06:56,325 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2021-12-06 23:06:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:56,325 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-12-06 23:06:56,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-12-06 23:06:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:06:56,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:56,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:56,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:06:56,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 23:06:56,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 172811107, now seen corresponding path program 1 times [2021-12-06 23:06:56,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:56,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890788254] [2021-12-06 23:06:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:56,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:56,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:56,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890788254] [2021-12-06 23:06:56,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890788254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:56,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:56,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:06:56,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522585926] [2021-12-06 23:06:56,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:06:56,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:06:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:56,684 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 5 states, 4 states have (on average 3.5) 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) [2021-12-06 23:06:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:56,764 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2021-12-06 23:06:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:06:56,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) 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 [2021-12-06 23:06:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:56,765 INFO L225 Difference]: With dead ends: 54 [2021-12-06 23:06:56,765 INFO L226 Difference]: Without dead ends: 54 [2021-12-06 23:06:56,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:06:56,766 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 74 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:56,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 62 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-06 23:06:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2021-12-06 23:06:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2021-12-06 23:06:56,769 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 14 [2021-12-06 23:06:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:56,770 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2021-12-06 23:06:56,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) 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) [2021-12-06 23:06:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2021-12-06 23:06:56,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 23:06:56,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:56,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:56,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:06:56,771 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash 172811108, now seen corresponding path program 1 times [2021-12-06 23:06:56,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:56,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645494475] [2021-12-06 23:06:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:56,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:56,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:56,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645494475] [2021-12-06 23:06:56,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645494475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:56,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:56,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:06:56,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422547695] [2021-12-06 23:06:56,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:56,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:06:56,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:06:56,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:06:56,824 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:56,872 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2021-12-06 23:06:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:06:56,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 23:06:56,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:56,873 INFO L225 Difference]: With dead ends: 69 [2021-12-06 23:06:56,873 INFO L226 Difference]: Without dead ends: 69 [2021-12-06 23:06:56,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:06:56,874 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 160 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:56,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 78 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-06 23:06:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2021-12-06 23:06:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 58 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2021-12-06 23:06:56,878 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 14 [2021-12-06 23:06:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:56,878 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2021-12-06 23:06:56,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2021-12-06 23:06:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:06:56,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:56,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:56,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:06:56,879 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1432273078, now seen corresponding path program 1 times [2021-12-06 23:06:56,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:56,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683599047] [2021-12-06 23:06:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:56,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:56,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683599047] [2021-12-06 23:06:56,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683599047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:56,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:56,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:06:56,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004488392] [2021-12-06 23:06:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:56,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:06:56,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:56,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:06:56,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:56,963 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:56,983 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-06 23:06:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:56,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 23:06:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:56,984 INFO L225 Difference]: With dead ends: 58 [2021-12-06 23:06:56,984 INFO L226 Difference]: Without dead ends: 55 [2021-12-06 23:06:56,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:56,985 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:56,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 66 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-06 23:06:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-12-06 23:06:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 54 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2021-12-06 23:06:56,988 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 16 [2021-12-06 23:06:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:56,988 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2021-12-06 23:06:56,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2021-12-06 23:06:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:06:56,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:56,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:56,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:06:56,989 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2001954455, now seen corresponding path program 1 times [2021-12-06 23:06:56,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:56,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537743231] [2021-12-06 23:06:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:56,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:57,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:57,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537743231] [2021-12-06 23:06:57,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537743231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:57,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:57,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:06:57,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127177160] [2021-12-06 23:06:57,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:57,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:06:57,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:57,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:06:57,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:06:57,017 INFO L87 Difference]: Start difference. First operand 55 states and 67 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) [2021-12-06 23:06:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:57,036 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2021-12-06 23:06:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:06:57,036 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 18 [2021-12-06 23:06:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:57,037 INFO L225 Difference]: With dead ends: 55 [2021-12-06 23:06:57,037 INFO L226 Difference]: Without dead ends: 55 [2021-12-06 23:06:57,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:06:57,038 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:57,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 56 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-06 23:06:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-12-06 23:06:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-12-06 23:06:57,041 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 18 [2021-12-06 23:06:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:57,041 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-12-06 23:06:57,041 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) [2021-12-06 23:06:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-12-06 23:06:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:06:57,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:57,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:57,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:06:57,042 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2001954454, now seen corresponding path program 1 times [2021-12-06 23:06:57,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:57,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113400892] [2021-12-06 23:06:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:57,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:57,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:57,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113400892] [2021-12-06 23:06:57,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113400892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:57,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:57,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:06:57,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576649316] [2021-12-06 23:06:57,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:57,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:06:57,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:57,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:06:57,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:06:57,095 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2021-12-06 23:06:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:57,174 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-12-06 23:06:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:06:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 [2021-12-06 23:06:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:57,175 INFO L225 Difference]: With dead ends: 80 [2021-12-06 23:06:57,175 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 23:06:57,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:06:57,176 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 151 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:57,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 65 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 23:06:57,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-12-06 23:06:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.309090909090909) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-12-06 23:06:57,178 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 18 [2021-12-06 23:06:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:57,178 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-12-06 23:06:57,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) [2021-12-06 23:06:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-12-06 23:06:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:06:57,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:57,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:57,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:06:57,179 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:57,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2001945381, now seen corresponding path program 1 times [2021-12-06 23:06:57,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:57,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668240268] [2021-12-06 23:06:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:57,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:57,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668240268] [2021-12-06 23:06:57,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668240268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:57,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:57,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:06:57,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358300951] [2021-12-06 23:06:57,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:57,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:06:57,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:06:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:06:57,199 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-12-06 23:06:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:57,204 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-12-06 23:06:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:06:57,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 [2021-12-06 23:06:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:57,205 INFO L225 Difference]: With dead ends: 62 [2021-12-06 23:06:57,205 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 23:06:57,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:06:57,206 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:57,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 23:06:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-06 23:06:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 61 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2021-12-06 23:06:57,208 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 18 [2021-12-06 23:06:57,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:57,209 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2021-12-06 23:06:57,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-12-06 23:06:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2021-12-06 23:06:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 23:06:57,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:57,209 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] [2021-12-06 23:06:57,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 23:06:57,210 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash 275803338, now seen corresponding path program 1 times [2021-12-06 23:06:57,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:57,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408696491] [2021-12-06 23:06:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:57,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:57,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:57,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408696491] [2021-12-06 23:06:57,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408696491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:57,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:57,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 23:06:57,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45408522] [2021-12-06 23:06:57,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:57,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:06:57,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:57,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:06:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:06:57,243 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:57,282 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-12-06 23:06:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:06:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 23:06:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:57,283 INFO L225 Difference]: With dead ends: 66 [2021-12-06 23:06:57,283 INFO L226 Difference]: Without dead ends: 63 [2021-12-06 23:06:57,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:06:57,284 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:57,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 95 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-06 23:06:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-12-06 23:06:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.263157894736842) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-12-06 23:06:57,286 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 20 [2021-12-06 23:06:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:57,287 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-12-06 23:06:57,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-12-06 23:06:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:06:57,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:57,287 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] [2021-12-06 23:06:57,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 23:06:57,288 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -309239812, now seen corresponding path program 1 times [2021-12-06 23:06:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:57,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994807352] [2021-12-06 23:06:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:57,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:57,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:57,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994807352] [2021-12-06 23:06:57,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994807352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:57,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:57,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 23:06:57,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286092183] [2021-12-06 23:06:57,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:57,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:06:57,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:57,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:06:57,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:06:57,401 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:57,627 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2021-12-06 23:06:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:06:57,627 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 23:06:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:57,628 INFO L225 Difference]: With dead ends: 112 [2021-12-06 23:06:57,628 INFO L226 Difference]: Without dead ends: 112 [2021-12-06 23:06:57,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:06:57,629 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 135 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:57,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 273 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:57,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-06 23:06:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 81. [2021-12-06 23:06:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 80 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-12-06 23:06:57,633 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 21 [2021-12-06 23:06:57,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:57,633 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-12-06 23:06:57,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-12-06 23:06:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:06:57,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:57,634 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] [2021-12-06 23:06:57,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 23:06:57,634 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:57,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:57,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1998183554, now seen corresponding path program 1 times [2021-12-06 23:06:57,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:57,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000235475] [2021-12-06 23:06:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:57,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:57,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000235475] [2021-12-06 23:06:57,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000235475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:57,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:57,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 23:06:57,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479559241] [2021-12-06 23:06:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:57,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:06:57,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:06:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:06:57,767 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:57,980 INFO L93 Difference]: Finished difference Result 139 states and 157 transitions. [2021-12-06 23:06:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:06:57,981 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 23:06:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:57,981 INFO L225 Difference]: With dead ends: 139 [2021-12-06 23:06:57,981 INFO L226 Difference]: Without dead ends: 139 [2021-12-06 23:06:57,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2021-12-06 23:06:57,983 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 176 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:57,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 223 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:57,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-06 23:06:57,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 83. [2021-12-06 23:06:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 82 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2021-12-06 23:06:57,986 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 21 [2021-12-06 23:06:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:57,987 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2021-12-06 23:06:57,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2021-12-06 23:06:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 23:06:57,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:57,988 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] [2021-12-06 23:06:57,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 23:06:57,988 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash -826750037, now seen corresponding path program 1 times [2021-12-06 23:06:57,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:57,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088239274] [2021-12-06 23:06:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:57,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:58,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:58,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088239274] [2021-12-06 23:06:58,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088239274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:58,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:58,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 23:06:58,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604112695] [2021-12-06 23:06:58,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:58,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:06:58,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:06:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:06:58,140 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-12-06 23:06:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:58,405 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2021-12-06 23:06:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:06:58,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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 [2021-12-06 23:06:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:58,406 INFO L225 Difference]: With dead ends: 102 [2021-12-06 23:06:58,406 INFO L226 Difference]: Without dead ends: 78 [2021-12-06 23:06:58,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:06:58,407 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:58,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 252 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-06 23:06:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-06 23:06:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 77 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-12-06 23:06:58,410 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 23 [2021-12-06 23:06:58,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:58,410 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-12-06 23:06:58,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2021-12-06 23:06:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-12-06 23:06:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 23:06:58,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:58,410 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] [2021-12-06 23:06:58,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 23:06:58,410 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:58,411 INFO L85 PathProgramCache]: Analyzing trace with hash -404048211, now seen corresponding path program 1 times [2021-12-06 23:06:58,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:58,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174539948] [2021-12-06 23:06:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:58,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:06:58,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:58,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174539948] [2021-12-06 23:06:58,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174539948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:58,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:58,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:06:58,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488015721] [2021-12-06 23:06:58,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:58,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:06:58,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:58,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:06:58,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:06:58,490 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2021-12-06 23:06:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:58,542 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2021-12-06 23:06:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:06:58,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 [2021-12-06 23:06:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:58,543 INFO L225 Difference]: With dead ends: 77 [2021-12-06 23:06:58,543 INFO L226 Difference]: Without dead ends: 65 [2021-12-06 23:06:58,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:06:58,544 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 63 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:58,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 152 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:58,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-06 23:06:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2021-12-06 23:06:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 58 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2021-12-06 23:06:58,546 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 23 [2021-12-06 23:06:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:58,546 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2021-12-06 23:06:58,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2021-12-06 23:06:58,547 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2021-12-06 23:06:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 23:06:58,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:58,547 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] [2021-12-06 23:06:58,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 23:06:58,547 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash -481506431, now seen corresponding path program 1 times [2021-12-06 23:06:58,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:58,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869524720] [2021-12-06 23:06:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:58,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:06:58,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:58,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869524720] [2021-12-06 23:06:58,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869524720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:58,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:58,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:06:58,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241764030] [2021-12-06 23:06:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:58,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:06:58,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:06:58,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:06:58,635 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:58,709 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2021-12-06 23:06:58,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:06:58,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 23:06:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:58,710 INFO L225 Difference]: With dead ends: 67 [2021-12-06 23:06:58,710 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 23:06:58,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:06:58,710 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:58,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 214 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 23:06:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-06 23:06:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-12-06 23:06:58,712 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 25 [2021-12-06 23:06:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:58,712 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-12-06 23:06:58,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-12-06 23:06:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 23:06:58,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:58,712 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] [2021-12-06 23:06:58,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 23:06:58,712 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -262651713, now seen corresponding path program 1 times [2021-12-06 23:06:58,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:58,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54616220] [2021-12-06 23:06:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:58,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:06:58,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:58,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54616220] [2021-12-06 23:06:58,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54616220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:06:58,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:06:58,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 23:06:58,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617922714] [2021-12-06 23:06:58,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:58,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:06:58,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:06:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:06:58,804 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:58,892 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-12-06 23:06:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:06:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 23:06:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:58,893 INFO L225 Difference]: With dead ends: 63 [2021-12-06 23:06:58,893 INFO L226 Difference]: Without dead ends: 55 [2021-12-06 23:06:58,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-12-06 23:06:58,893 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:58,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 188 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:06:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-06 23:06:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2021-12-06 23:06:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-12-06 23:06:58,895 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 25 [2021-12-06 23:06:58,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:58,895 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-12-06 23:06:58,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-12-06 23:06:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:06:58,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:58,896 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] [2021-12-06 23:06:58,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 23:06:58,896 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:58,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash 838689666, now seen corresponding path program 1 times [2021-12-06 23:06:58,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:58,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530130386] [2021-12-06 23:06:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:58,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:06:58,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:58,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530130386] [2021-12-06 23:06:58,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530130386] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:06:58,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143588982] [2021-12-06 23:06:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:58,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:58,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:58,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:58,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:06:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:59,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 23:06:59,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:06:59,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:59,182 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 5 treesize of output 3 [2021-12-06 23:06:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:06:59,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143588982] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:59,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:06:59,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2021-12-06 23:06:59,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007982922] [2021-12-06 23:06:59,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:59,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 23:06:59,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 23:06:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:06:59,201 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 21 states, 20 states have (on average 3.25) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:59,334 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-12-06 23:06:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:06:59,335 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.25) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 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 [2021-12-06 23:06:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:59,335 INFO L225 Difference]: With dead ends: 73 [2021-12-06 23:06:59,335 INFO L226 Difference]: Without dead ends: 69 [2021-12-06 23:06:59,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:06:59,336 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 274 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:59,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 185 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:06:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-06 23:06:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 48. [2021-12-06 23:06:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 47 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) [2021-12-06 23:06:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-12-06 23:06:59,339 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 29 [2021-12-06 23:06:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:59,339 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-12-06 23:06:59,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.25) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-12-06 23:06:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 23:06:59,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:59,340 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] [2021-12-06 23:06:59,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:06:59,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 23:06:59,542 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:06:59,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1473116751, now seen corresponding path program 1 times [2021-12-06 23:06:59,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:59,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634160153] [2021-12-06 23:06:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:59,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:06:59,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:59,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634160153] [2021-12-06 23:06:59,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634160153] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:06:59,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592254530] [2021-12-06 23:06:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:59,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:59,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:59,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:59,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:06:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:06:59,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 23:06:59,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:59,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:06:59,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:06:59,795 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 10 treesize of output 8 [2021-12-06 23:06:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:06:59,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:00,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592254530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:00,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:00,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2021-12-06 23:07:00,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878174468] [2021-12-06 23:07:00,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:00,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:07:00,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:00,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:07:00,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:07:00,045 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 17 states, 16 states have (on average 4.75) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:00,199 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-12-06 23:07:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:07:00,199 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.75) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 23:07:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:00,199 INFO L225 Difference]: With dead ends: 86 [2021-12-06 23:07:00,200 INFO L226 Difference]: Without dead ends: 86 [2021-12-06 23:07:00,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:07:00,200 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 227 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:00,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 140 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:07:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-06 23:07:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 61. [2021-12-06 23:07:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.206896551724138) internal successors, (70), 60 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2021-12-06 23:07:00,202 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 31 [2021-12-06 23:07:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:00,202 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2021-12-06 23:07:00,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.75) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:00,202 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2021-12-06 23:07:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:07:00,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:00,203 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:07:00,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:07:00,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 23:07:00,404 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:00,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1707334280, now seen corresponding path program 1 times [2021-12-06 23:07:00,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:00,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493444344] [2021-12-06 23:07:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:00,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:00,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:00,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493444344] [2021-12-06 23:07:00,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493444344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:00,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750846640] [2021-12-06 23:07:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:00,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:00,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:00,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:07:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:00,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 23:07:00,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:00,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:07:00,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:07:00,629 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 10 treesize of output 8 [2021-12-06 23:07:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:00,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:00,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750846640] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:00,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:00,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2021-12-06 23:07:00,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668339435] [2021-12-06 23:07:00,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:00,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 23:07:00,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:07:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:07:00,902 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:01,156 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-12-06 23:07:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:07:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 23:07:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:01,157 INFO L225 Difference]: With dead ends: 80 [2021-12-06 23:07:01,157 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 23:07:01,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:07:01,157 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 216 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:01,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 171 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:07:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 23:07:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2021-12-06 23:07:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2021-12-06 23:07:01,159 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 33 [2021-12-06 23:07:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:01,159 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2021-12-06 23:07:01,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2021-12-06 23:07:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:07:01,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:01,160 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:01,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:07:01,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 23:07:01,361 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2102124002, now seen corresponding path program 2 times [2021-12-06 23:07:01,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:01,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598702172] [2021-12-06 23:07:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:01,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:01,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598702172] [2021-12-06 23:07:01,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598702172] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854913298] [2021-12-06 23:07:01,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:07:01,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:01,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:01,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:01,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:07:01,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:07:01,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:01,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 23:07:01,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:01,609 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 14 treesize of output 10 [2021-12-06 23:07:01,890 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:01,890 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 18 treesize of output 18 [2021-12-06 23:07:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:02,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:02,266 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 13 [2021-12-06 23:07:02,269 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 15 treesize of output 11 [2021-12-06 23:07:02,273 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 26 treesize of output 22 [2021-12-06 23:07:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:02,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854913298] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:02,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:02,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 33 [2021-12-06 23:07:02,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519153473] [2021-12-06 23:07:02,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:02,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 23:07:02,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 23:07:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:07:02,292 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:04,609 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2021-12-06 23:07:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 23:07:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 23:07:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:04,611 INFO L225 Difference]: With dead ends: 93 [2021-12-06 23:07:04,611 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 23:07:04,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=205, Invalid=1687, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 23:07:04,612 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:04,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 356 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 91 Unchecked, 0.1s Time] [2021-12-06 23:07:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 23:07:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2021-12-06 23:07:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 83 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2021-12-06 23:07:04,615 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 36 [2021-12-06 23:07:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:04,615 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2021-12-06 23:07:04,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2021-12-06 23:07:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 23:07:04,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:04,615 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:04,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:07:04,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 23:07:04,817 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1563569052, now seen corresponding path program 1 times [2021-12-06 23:07:04,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:04,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314620339] [2021-12-06 23:07:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:04,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:04,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:04,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314620339] [2021-12-06 23:07:04,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314620339] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:04,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804399135] [2021-12-06 23:07:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:04,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:04,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:04,915 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:04,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:07:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:04,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 23:07:04,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:04,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:07:04,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:07:04,986 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 10 treesize of output 8 [2021-12-06 23:07:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:05,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:05,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804399135] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:05,304 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:05,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2021-12-06 23:07:05,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442139530] [2021-12-06 23:07:05,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:05,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 23:07:05,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:07:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:07:05,305 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:05,601 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2021-12-06 23:07:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:07:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 23:07:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:05,603 INFO L225 Difference]: With dead ends: 114 [2021-12-06 23:07:05,603 INFO L226 Difference]: Without dead ends: 114 [2021-12-06 23:07:05,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:07:05,604 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 332 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:05,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 115 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:07:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-06 23:07:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2021-12-06 23:07:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-12-06 23:07:05,607 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 37 [2021-12-06 23:07:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:05,607 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-12-06 23:07:05,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.947368421052632) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-12-06 23:07:05,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 23:07:05,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:05,608 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:05,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:07:05,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:05,809 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:05,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2117126329, now seen corresponding path program 2 times [2021-12-06 23:07:05,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:05,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794935615] [2021-12-06 23:07:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:05,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:06,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794935615] [2021-12-06 23:07:06,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794935615] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23475032] [2021-12-06 23:07:06,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:07:06,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:06,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:06,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:07:06,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:07:06,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:06,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 23:07:06,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:06,119 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 10 treesize of output 8 [2021-12-06 23:07:06,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:07:06,265 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 17 treesize of output 19 [2021-12-06 23:07:06,343 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:06,343 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 15 treesize of output 10 [2021-12-06 23:07:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:06,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:06,415 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_390 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_390) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1)) 0)) is different from false [2021-12-06 23:07:06,420 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:06,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:07:06,424 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:06,424 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 37 treesize of output 37 [2021-12-06 23:07:06,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:07:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:06,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23475032] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:06,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:06,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2021-12-06 23:07:06,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673685888] [2021-12-06 23:07:06,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:06,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 23:07:06,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 23:07:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=718, Unknown=1, NotChecked=54, Total=870 [2021-12-06 23:07:06,531 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:06,696 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2021-12-06 23:07:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:07:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 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 42 [2021-12-06 23:07:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:06,697 INFO L225 Difference]: With dead ends: 146 [2021-12-06 23:07:06,697 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 23:07:06,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=922, Unknown=1, NotChecked=62, Total=1122 [2021-12-06 23:07:06,698 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 128 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:06,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 310 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2021-12-06 23:07:06,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 23:07:06,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2021-12-06 23:07:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 122 states have (on average 1.139344262295082) internal successors, (139), 124 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 139 transitions. [2021-12-06 23:07:06,701 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 139 transitions. Word has length 42 [2021-12-06 23:07:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:06,701 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 139 transitions. [2021-12-06 23:07:06,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 139 transitions. [2021-12-06 23:07:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 23:07:06,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:06,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-06 23:07:06,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:07:06,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:06,903 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:06,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1160738303, now seen corresponding path program 2 times [2021-12-06 23:07:06,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:06,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638438914] [2021-12-06 23:07:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:06,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:07:07,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638438914] [2021-12-06 23:07:07,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638438914] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488286734] [2021-12-06 23:07:07,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:07:07,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:07,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:07,265 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:07,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:07:07,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:07:07,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:07,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 23:07:07,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:07,434 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 14 treesize of output 10 [2021-12-06 23:07:07,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:07:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:07,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:07,780 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 13 [2021-12-06 23:07:07,782 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 26 treesize of output 22 [2021-12-06 23:07:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:07,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488286734] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:07,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:07,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 39 [2021-12-06 23:07:07,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21231498] [2021-12-06 23:07:07,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:07,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 23:07:07,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 23:07:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1338, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 23:07:07,983 INFO L87 Difference]: Start difference. First operand 125 states and 139 transitions. Second operand has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:09,016 INFO L93 Difference]: Finished difference Result 242 states and 260 transitions. [2021-12-06 23:07:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 23:07:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-06 23:07:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:09,018 INFO L225 Difference]: With dead ends: 242 [2021-12-06 23:07:09,018 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 23:07:09,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=546, Invalid=3360, Unknown=0, NotChecked=0, Total=3906 [2021-12-06 23:07:09,019 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 463 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:09,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 736 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 715 Invalid, 0 Unknown, 179 Unchecked, 0.2s Time] [2021-12-06 23:07:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 23:07:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 145. [2021-12-06 23:07:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 144 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2021-12-06 23:07:09,022 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 44 [2021-12-06 23:07:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:09,022 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2021-12-06 23:07:09,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 39 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2021-12-06 23:07:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 23:07:09,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:09,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-12-06 23:07:09,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:07:09,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 23:07:09,224 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1310015382, now seen corresponding path program 3 times [2021-12-06 23:07:09,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:09,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366077448] [2021-12-06 23:07:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:09,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:09,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:09,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366077448] [2021-12-06 23:07:09,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366077448] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:09,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242963079] [2021-12-06 23:07:09,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:07:09,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:09,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:09,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:09,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:07:09,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 23:07:09,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:09,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 23:07:09,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:09,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:09,604 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 7 treesize of output 5 [2021-12-06 23:07:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:09,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242963079] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:09,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:09,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 23 [2021-12-06 23:07:09,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633685111] [2021-12-06 23:07:09,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:09,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 23:07:09,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 23:07:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:07:09,628 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 24 states, 23 states have (on average 4.956521739130435) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:09,872 INFO L93 Difference]: Finished difference Result 203 states and 219 transitions. [2021-12-06 23:07:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:07:09,872 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.956521739130435) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-06 23:07:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:09,873 INFO L225 Difference]: With dead ends: 203 [2021-12-06 23:07:09,873 INFO L226 Difference]: Without dead ends: 203 [2021-12-06 23:07:09,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=820, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:07:09,874 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 432 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:09,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 290 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:07:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-06 23:07:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 164. [2021-12-06 23:07:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 161 states have (on average 1.1428571428571428) internal successors, (184), 163 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 184 transitions. [2021-12-06 23:07:09,877 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 184 transitions. Word has length 46 [2021-12-06 23:07:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:09,877 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 184 transitions. [2021-12-06 23:07:09,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.956521739130435) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 184 transitions. [2021-12-06 23:07:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 23:07:09,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:09,878 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:09,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:07:10,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 23:07:10,079 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash -204836258, now seen corresponding path program 3 times [2021-12-06 23:07:10,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:10,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367870048] [2021-12-06 23:07:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:10,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:10,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:10,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367870048] [2021-12-06 23:07:10,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367870048] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:10,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3439788] [2021-12-06 23:07:10,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:07:10,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:10,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:10,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:07:10,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 23:07:10,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:10,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-06 23:07:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:10,369 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 10 treesize of output 8 [2021-12-06 23:07:10,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:07:10,527 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 17 treesize of output 19 [2021-12-06 23:07:10,849 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:07:10,849 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 1 case distinctions, treesize of input 33 treesize of output 17 [2021-12-06 23:07:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:10,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:11,433 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_491 (Array Int Int)) (|ULTIMATE.start_substring_~pt~0#1.offset| Int)) (let ((.cse0 (select v_ArrVal_491 |ULTIMATE.start_substring_~pt~0#1.offset|))) (or (= .cse0 0) (not (= .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_491) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 1))))))) is different from false [2021-12-06 23:07:11,440 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:11,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2021-12-06 23:07:11,444 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:11,444 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 44 treesize of output 44 [2021-12-06 23:07:11,448 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:11,449 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 32 treesize of output 32 [2021-12-06 23:07:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:11,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3439788] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:11,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:11,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 17] total 42 [2021-12-06 23:07:11,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367436737] [2021-12-06 23:07:11,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:11,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-06 23:07:11,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-06 23:07:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1500, Unknown=2, NotChecked=78, Total=1722 [2021-12-06 23:07:11,610 INFO L87 Difference]: Start difference. First operand 164 states and 184 transitions. Second operand has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:12,067 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2021-12-06 23:07:12,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:07:12,068 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-12-06 23:07:12,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:12,068 INFO L225 Difference]: With dead ends: 159 [2021-12-06 23:07:12,068 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 23:07:12,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=305, Invalid=2559, Unknown=2, NotChecked=104, Total=2970 [2021-12-06 23:07:12,070 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 83 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:12,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 564 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 352 Invalid, 0 Unknown, 207 Unchecked, 0.1s Time] [2021-12-06 23:07:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 23:07:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-12-06 23:07:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1583333333333334) internal successors, (139), 122 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2021-12-06 23:07:12,072 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 48 [2021-12-06 23:07:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:12,072 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2021-12-06 23:07:12,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 42 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2021-12-06 23:07:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 23:07:12,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:12,073 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:12,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 23:07:12,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:12,274 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:12,275 INFO L85 PathProgramCache]: Analyzing trace with hash 532688685, now seen corresponding path program 1 times [2021-12-06 23:07:12,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:12,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089586581] [2021-12-06 23:07:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:12,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:12,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089586581] [2021-12-06 23:07:12,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089586581] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:12,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104518954] [2021-12-06 23:07:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:12,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:12,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:12,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:12,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:07:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:12,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 23:07:12,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:12,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:07:12,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:07:12,473 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 10 treesize of output 8 [2021-12-06 23:07:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:12,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:12,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104518954] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:12,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:12,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2021-12-06 23:07:12,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148373322] [2021-12-06 23:07:12,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:12,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:07:12,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:07:12,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:07:12,826 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 25 states, 24 states have (on average 5.291666666666667) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:13,197 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2021-12-06 23:07:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:07:13,198 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.291666666666667) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-12-06 23:07:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:13,198 INFO L225 Difference]: With dead ends: 152 [2021-12-06 23:07:13,198 INFO L226 Difference]: Without dead ends: 152 [2021-12-06 23:07:13,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=1165, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 23:07:13,199 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 501 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:13,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 211 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:07:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-06 23:07:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 127. [2021-12-06 23:07:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.153225806451613) internal successors, (143), 126 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 143 transitions. [2021-12-06 23:07:13,202 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 143 transitions. Word has length 48 [2021-12-06 23:07:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:13,202 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 143 transitions. [2021-12-06 23:07:13,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.291666666666667) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 143 transitions. [2021-12-06 23:07:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 23:07:13,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:13,203 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:13,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 23:07:13,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-06 23:07:13,404 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash -575516839, now seen corresponding path program 1 times [2021-12-06 23:07:13,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:13,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764619908] [2021-12-06 23:07:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:13,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:07:13,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:13,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764619908] [2021-12-06 23:07:13,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764619908] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:13,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016203136] [2021-12-06 23:07:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:13,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:13,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:13,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 23:07:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:13,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 23:07:13,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:13,907 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 14 treesize of output 10 [2021-12-06 23:07:14,105 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:07:14,105 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 18 treesize of output 10 [2021-12-06 23:07:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:07:14,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:14,223 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 13 [2021-12-06 23:07:14,224 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 26 treesize of output 22 [2021-12-06 23:07:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:07:14,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016203136] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:14,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:14,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 38 [2021-12-06 23:07:14,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077969615] [2021-12-06 23:07:14,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:14,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 23:07:14,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 23:07:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 23:07:14,311 INFO L87 Difference]: Start difference. First operand 127 states and 143 transitions. Second operand has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 38 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:14,985 INFO L93 Difference]: Finished difference Result 220 states and 240 transitions. [2021-12-06 23:07:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 23:07:14,985 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 38 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-06 23:07:14,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:14,986 INFO L225 Difference]: With dead ends: 220 [2021-12-06 23:07:14,986 INFO L226 Difference]: Without dead ends: 211 [2021-12-06 23:07:14,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=3101, Unknown=0, NotChecked=0, Total=3422 [2021-12-06 23:07:14,988 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 101 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:14,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 446 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 572 Invalid, 0 Unknown, 141 Unchecked, 0.2s Time] [2021-12-06 23:07:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-06 23:07:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 159. [2021-12-06 23:07:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.1282051282051282) internal successors, (176), 158 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 176 transitions. [2021-12-06 23:07:14,991 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 176 transitions. Word has length 51 [2021-12-06 23:07:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:14,991 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 176 transitions. [2021-12-06 23:07:14,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 38 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 176 transitions. [2021-12-06 23:07:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 23:07:14,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:14,991 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:15,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 23:07:15,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:15,192 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 314543995, now seen corresponding path program 4 times [2021-12-06 23:07:15,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788696967] [2021-12-06 23:07:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:15,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:15,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:15,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788696967] [2021-12-06 23:07:15,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788696967] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451579618] [2021-12-06 23:07:15,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:07:15,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:15,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:15,271 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:15,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 23:07:15,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:07:15,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:15,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 23:07:15,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:15,352 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 10 treesize of output 8 [2021-12-06 23:07:15,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:07:15,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 23:07:16,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:07:16,246 INFO L354 Elim1Store]: treesize reduction 24, result has 79.8 percent of original size [2021-12-06 23:07:16,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 54 treesize of output 115 [2021-12-06 23:07:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 23:07:16,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:17,327 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_substring_~pt~0#1.base_63| Int) (v_ArrVal_600 (Array Int Int)) (|ULTIMATE.start_substring_~pt~0#1.base| Int) (|v_ULTIMATE.start_substring_~pt~0#1.offset_58| Int) (|ULTIMATE.start_substring_~pt~0#1.offset| Int) (|v_ULTIMATE.start_substring_~ps2~0#1.offset_52| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_600))) (let ((.cse0 (select (select .cse3 |v_ULTIMATE.start_substring_~pt~0#1.base_63|) |v_ULTIMATE.start_substring_~pt~0#1.offset_58|)) (.cse1 (select (select .cse3 |ULTIMATE.start_substring_~pt~0#1.base|) |ULTIMATE.start_substring_~pt~0#1.offset|)) (.cse2 (select .cse3 |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (or (< |c_ULTIMATE.start_main_~nondetString1~0#1.offset| |v_ULTIMATE.start_substring_~ps2~0#1.offset_52|) (= .cse0 0) (<= (+ |v_ULTIMATE.start_substring_~ps2~0#1.offset_52| 3) (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (= .cse1 0) (not (= .cse0 (select .cse2 (+ |v_ULTIMATE.start_substring_~ps2~0#1.offset_52| 1)))) (not (= .cse1 (select .cse2 |v_ULTIMATE.start_substring_~ps2~0#1.offset_52|))) (< |v_ULTIMATE.start_substring_~ps2~0#1.offset_52| 0))))) is different from false [2021-12-06 23:07:17,345 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:17,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 70 [2021-12-06 23:07:17,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:07:17,387 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:17,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 262 [2021-12-06 23:07:17,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:07:17,422 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:17,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 131 treesize of output 151 [2021-12-06 23:07:17,435 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 15 treesize of output 11 [2021-12-06 23:07:25,007 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 10 treesize of output 8 [2021-12-06 23:07:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 23:07:25,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451579618] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:25,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:25,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 21] total 47 [2021-12-06 23:07:25,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770657109] [2021-12-06 23:07:25,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:25,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 23:07:25,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 23:07:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1953, Unknown=1, NotChecked=90, Total=2256 [2021-12-06 23:07:25,021 INFO L87 Difference]: Start difference. First operand 159 states and 176 transitions. Second operand has 48 states, 47 states have (on average 2.404255319148936) internal successors, (113), 48 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:26,673 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2021-12-06 23:07:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 23:07:26,673 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.404255319148936) internal successors, (113), 48 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-06 23:07:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:26,674 INFO L225 Difference]: With dead ends: 159 [2021-12-06 23:07:26,674 INFO L226 Difference]: Without dead ends: 159 [2021-12-06 23:07:26,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=624, Invalid=4780, Unknown=2, NotChecked=144, Total=5550 [2021-12-06 23:07:26,676 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:26,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 352 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 280 Unchecked, 0.1s Time] [2021-12-06 23:07:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-06 23:07:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-12-06 23:07:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.1217948717948718) internal successors, (175), 158 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 175 transitions. [2021-12-06 23:07:26,679 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 175 transitions. Word has length 52 [2021-12-06 23:07:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:26,679 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 175 transitions. [2021-12-06 23:07:26,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.404255319148936) internal successors, (113), 48 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 175 transitions. [2021-12-06 23:07:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 23:07:26,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:26,679 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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] [2021-12-06 23:07:26,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 23:07:26,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 23:07:26,881 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2051822684, now seen corresponding path program 2 times [2021-12-06 23:07:26,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:26,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630738926] [2021-12-06 23:07:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:26,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:07:26,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:26,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630738926] [2021-12-06 23:07:26,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630738926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:26,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91276234] [2021-12-06 23:07:26,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:07:26,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:26,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:27,000 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:27,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 23:07:27,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:07:27,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:27,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 23:07:27,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:07:27,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:27,327 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 5 treesize of output 3 [2021-12-06 23:07:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:07:27,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91276234] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:27,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:27,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 22 [2021-12-06 23:07:27,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223849372] [2021-12-06 23:07:27,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:27,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 23:07:27,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 23:07:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:07:27,349 INFO L87 Difference]: Start difference. First operand 159 states and 175 transitions. Second operand has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:27,640 INFO L93 Difference]: Finished difference Result 226 states and 247 transitions. [2021-12-06 23:07:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:07:27,640 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-06 23:07:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:27,641 INFO L225 Difference]: With dead ends: 226 [2021-12-06 23:07:27,641 INFO L226 Difference]: Without dead ends: 226 [2021-12-06 23:07:27,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2021-12-06 23:07:27,642 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 289 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:27,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 283 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:07:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-06 23:07:27,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 169. [2021-12-06 23:07:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 168 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 188 transitions. [2021-12-06 23:07:27,647 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 188 transitions. Word has length 55 [2021-12-06 23:07:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:27,647 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 188 transitions. [2021-12-06 23:07:27,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 23 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 188 transitions. [2021-12-06 23:07:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 23:07:27,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:27,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:27,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 23:07:27,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 23:07:27,849 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1038457781, now seen corresponding path program 3 times [2021-12-06 23:07:27,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:27,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189389429] [2021-12-06 23:07:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:27,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:07:27,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:27,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189389429] [2021-12-06 23:07:27,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189389429] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:27,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044904404] [2021-12-06 23:07:27,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:07:27,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:27,951 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:27,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 23:07:28,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 23:07:28,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:28,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 23:07:28,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:07:28,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:28,349 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 7 treesize of output 5 [2021-12-06 23:07:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:07:28,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044904404] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:28,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:28,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 29 [2021-12-06 23:07:28,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822986756] [2021-12-06 23:07:28,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:28,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 23:07:28,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:28,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 23:07:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:07:28,385 INFO L87 Difference]: Start difference. First operand 169 states and 188 transitions. Second operand has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:28,842 INFO L93 Difference]: Finished difference Result 318 states and 352 transitions. [2021-12-06 23:07:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:07:28,843 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-06 23:07:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:28,844 INFO L225 Difference]: With dead ends: 318 [2021-12-06 23:07:28,844 INFO L226 Difference]: Without dead ends: 318 [2021-12-06 23:07:28,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=1321, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 23:07:28,846 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 483 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:28,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 453 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:07:28,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-06 23:07:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 245. [2021-12-06 23:07:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 242 states have (on average 1.1611570247933884) internal successors, (281), 244 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 281 transitions. [2021-12-06 23:07:28,852 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 281 transitions. Word has length 55 [2021-12-06 23:07:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:28,853 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 281 transitions. [2021-12-06 23:07:28,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 281 transitions. [2021-12-06 23:07:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 23:07:28,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:28,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:28,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 23:07:29,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 23:07:29,054 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:29,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:29,054 INFO L85 PathProgramCache]: Analyzing trace with hash -869737036, now seen corresponding path program 4 times [2021-12-06 23:07:29,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:29,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251724355] [2021-12-06 23:07:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:29,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:07:29,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251724355] [2021-12-06 23:07:29,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251724355] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196635074] [2021-12-06 23:07:29,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:07:29,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:29,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:29,529 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:29,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 23:07:29,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:07:29,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:29,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 23:07:29,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:29,616 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:07:29,616 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:07:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:07:29,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:07:29,819 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 16 treesize of output 18 [2021-12-06 23:07:30,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:07:30,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 23:07:30,096 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 11 treesize of output 7 [2021-12-06 23:07:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:30,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:30,432 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:30,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 23:07:30,437 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:30,437 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 33 [2021-12-06 23:07:30,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:07:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:30,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196635074] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:30,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:30,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 42 [2021-12-06 23:07:30,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963654483] [2021-12-06 23:07:30,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:30,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-06 23:07:30,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:30,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-06 23:07:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1566, Unknown=16, NotChecked=0, Total=1722 [2021-12-06 23:07:30,770 INFO L87 Difference]: Start difference. First operand 245 states and 281 transitions. Second operand has 42 states, 42 states have (on average 3.357142857142857) internal successors, (141), 42 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:31,641 INFO L93 Difference]: Finished difference Result 413 states and 468 transitions. [2021-12-06 23:07:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 23:07:31,642 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.357142857142857) internal successors, (141), 42 states have internal predecessors, (141), 0 states have call successors, (0), 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 57 [2021-12-06 23:07:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:31,643 INFO L225 Difference]: With dead ends: 413 [2021-12-06 23:07:31,643 INFO L226 Difference]: Without dead ends: 378 [2021-12-06 23:07:31,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=394, Invalid=3622, Unknown=16, NotChecked=0, Total=4032 [2021-12-06 23:07:31,645 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 124 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:31,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 381 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 322 Invalid, 0 Unknown, 133 Unchecked, 0.1s Time] [2021-12-06 23:07:31,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-06 23:07:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 365. [2021-12-06 23:07:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 362 states have (on average 1.1408839779005524) internal successors, (413), 364 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 413 transitions. [2021-12-06 23:07:31,650 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 413 transitions. Word has length 57 [2021-12-06 23:07:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:31,650 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 413 transitions. [2021-12-06 23:07:31,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.357142857142857) internal successors, (141), 42 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 413 transitions. [2021-12-06 23:07:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 23:07:31,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:31,651 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 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] [2021-12-06 23:07:31,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 23:07:31,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 23:07:31,851 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash 421187170, now seen corresponding path program 2 times [2021-12-06 23:07:31,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:31,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296416385] [2021-12-06 23:07:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:31,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:07:32,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:32,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296416385] [2021-12-06 23:07:32,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296416385] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:32,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936533350] [2021-12-06 23:07:32,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:07:32,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:32,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:32,027 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:32,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 23:07:32,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:07:32,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:32,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 23:07:32,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:32,108 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:07:32,108 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:07:32,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:07:32,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:07:32,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 23:07:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:07:32,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:32,841 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 13 treesize of output 11 [2021-12-06 23:07:32,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:07:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:07:33,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936533350] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:33,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:33,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 41 [2021-12-06 23:07:33,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942833942] [2021-12-06 23:07:33,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:33,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 23:07:33,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:33,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 23:07:33,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1509, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 23:07:33,121 INFO L87 Difference]: Start difference. First operand 365 states and 413 transitions. Second operand has 41 states, 41 states have (on average 3.6341463414634148) internal successors, (149), 41 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:33,967 INFO L93 Difference]: Finished difference Result 457 states and 507 transitions. [2021-12-06 23:07:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 23:07:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.6341463414634148) internal successors, (149), 41 states have internal predecessors, (149), 0 states have call successors, (0), 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 59 [2021-12-06 23:07:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:33,969 INFO L225 Difference]: With dead ends: 457 [2021-12-06 23:07:33,969 INFO L226 Difference]: Without dead ends: 415 [2021-12-06 23:07:33,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=499, Invalid=5051, Unknown=0, NotChecked=0, Total=5550 [2021-12-06 23:07:33,971 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 127 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:33,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 535 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 437 Invalid, 0 Unknown, 191 Unchecked, 0.1s Time] [2021-12-06 23:07:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-06 23:07:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 404. [2021-12-06 23:07:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 401 states have (on average 1.1321695760598505) internal successors, (454), 403 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 454 transitions. [2021-12-06 23:07:33,976 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 454 transitions. Word has length 59 [2021-12-06 23:07:33,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:33,976 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 454 transitions. [2021-12-06 23:07:33,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.6341463414634148) internal successors, (149), 41 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:33,977 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 454 transitions. [2021-12-06 23:07:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:07:33,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:33,977 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:33,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 23:07:34,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:34,178 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1359597257, now seen corresponding path program 5 times [2021-12-06 23:07:34,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:34,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48180018] [2021-12-06 23:07:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:34,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:34,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:34,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48180018] [2021-12-06 23:07:34,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48180018] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:34,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717402919] [2021-12-06 23:07:34,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:07:34,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:34,298 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:34,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 23:07:34,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 23:07:34,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:34,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 23:07:34,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:34,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:07:34,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:07:34,405 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 10 treesize of output 8 [2021-12-06 23:07:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:34,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:34,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717402919] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:34,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:34,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2021-12-06 23:07:34,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108486677] [2021-12-06 23:07:34,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:34,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:07:34,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:07:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:07:34,853 INFO L87 Difference]: Start difference. First operand 404 states and 454 transitions. Second operand has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:35,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:35,136 INFO L93 Difference]: Finished difference Result 585 states and 658 transitions. [2021-12-06 23:07:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:07:35,136 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 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 61 [2021-12-06 23:07:35,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:35,138 INFO L225 Difference]: With dead ends: 585 [2021-12-06 23:07:35,138 INFO L226 Difference]: Without dead ends: 585 [2021-12-06 23:07:35,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:07:35,139 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 210 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:35,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 331 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:07:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-12-06 23:07:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 492. [2021-12-06 23:07:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 489 states have (on average 1.1411042944785277) internal successors, (558), 491 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 558 transitions. [2021-12-06 23:07:35,145 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 558 transitions. Word has length 61 [2021-12-06 23:07:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:35,145 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 558 transitions. [2021-12-06 23:07:35,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 558 transitions. [2021-12-06 23:07:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 23:07:35,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:35,146 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:35,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-06 23:07:35,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-12-06 23:07:35,347 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:35,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1748804299, now seen corresponding path program 4 times [2021-12-06 23:07:35,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:35,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515262322] [2021-12-06 23:07:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:35,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:35,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:35,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515262322] [2021-12-06 23:07:35,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515262322] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:35,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414517135] [2021-12-06 23:07:35,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:07:35,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:35,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:35,463 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:35,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 23:07:35,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:07:35,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:35,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 23:07:35,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:35,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:07:35,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:07:35,542 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 10 treesize of output 8 [2021-12-06 23:07:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:35,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 31 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:35,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414517135] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:35,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:35,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 25 [2021-12-06 23:07:35,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827725828] [2021-12-06 23:07:35,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:35,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:07:35,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:35,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:07:35,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:07:35,821 INFO L87 Difference]: Start difference. First operand 492 states and 558 transitions. Second operand has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:36,162 INFO L93 Difference]: Finished difference Result 506 states and 566 transitions. [2021-12-06 23:07:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:07:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-06 23:07:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:36,164 INFO L225 Difference]: With dead ends: 506 [2021-12-06 23:07:36,164 INFO L226 Difference]: Without dead ends: 501 [2021-12-06 23:07:36,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 23:07:36,165 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 193 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:36,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 302 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:07:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-12-06 23:07:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 491. [2021-12-06 23:07:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 488 states have (on average 1.1352459016393444) internal successors, (554), 490 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:36,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 554 transitions. [2021-12-06 23:07:36,171 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 554 transitions. Word has length 62 [2021-12-06 23:07:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:36,171 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 554 transitions. [2021-12-06 23:07:36,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 554 transitions. [2021-12-06 23:07:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 23:07:36,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:36,172 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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] [2021-12-06 23:07:36,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-06 23:07:36,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:36,373 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash 876255922, now seen corresponding path program 3 times [2021-12-06 23:07:36,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:36,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35923825] [2021-12-06 23:07:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:36,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:07:36,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:36,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35923825] [2021-12-06 23:07:36,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35923825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:36,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455897073] [2021-12-06 23:07:36,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:07:36,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:36,594 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:36,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 23:07:36,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 23:07:36,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:36,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 23:07:36,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:36,689 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:07:36,689 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:07:36,820 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 14 treesize of output 10 [2021-12-06 23:07:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 19 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:40,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:41,083 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 13 treesize of output 11 [2021-12-06 23:07:41,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:07:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 48 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:41,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455897073] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:41,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:41,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 44 [2021-12-06 23:07:41,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288611880] [2021-12-06 23:07:41,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:41,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 23:07:41,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 23:07:41,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1733, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 23:07:41,384 INFO L87 Difference]: Start difference. First operand 491 states and 554 transitions. Second operand has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:46,641 INFO L93 Difference]: Finished difference Result 471 states and 517 transitions. [2021-12-06 23:07:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 23:07:46,641 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 0 states have call successors, (0), 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 66 [2021-12-06 23:07:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:46,642 INFO L225 Difference]: With dead ends: 471 [2021-12-06 23:07:46,642 INFO L226 Difference]: Without dead ends: 361 [2021-12-06 23:07:46,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=579, Invalid=5740, Unknown=1, NotChecked=0, Total=6320 [2021-12-06 23:07:46,643 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 147 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:46,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 412 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 380 Invalid, 0 Unknown, 190 Unchecked, 0.1s Time] [2021-12-06 23:07:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-12-06 23:07:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 295. [2021-12-06 23:07:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 292 states have (on average 1.1404109589041096) internal successors, (333), 294 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) [2021-12-06 23:07:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 333 transitions. [2021-12-06 23:07:46,647 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 333 transitions. Word has length 66 [2021-12-06 23:07:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:46,647 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 333 transitions. [2021-12-06 23:07:46,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 333 transitions. [2021-12-06 23:07:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 23:07:46,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:46,648 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:46,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 23:07:46,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:46,849 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -287521902, now seen corresponding path program 5 times [2021-12-06 23:07:46,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:46,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800952240] [2021-12-06 23:07:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:46,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 57 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:47,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:47,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800952240] [2021-12-06 23:07:47,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800952240] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:47,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433474809] [2021-12-06 23:07:47,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:07:47,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:47,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:47,064 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:47,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 23:07:47,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 23:07:47,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:47,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 23:07:47,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:47,258 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 14 treesize of output 10 [2021-12-06 23:07:47,568 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:07:47,568 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 18 treesize of output 10 [2021-12-06 23:07:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:47,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:47,751 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 13 [2021-12-06 23:07:47,752 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 26 treesize of output 22 [2021-12-06 23:07:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:47,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433474809] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:47,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:47,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 41 [2021-12-06 23:07:47,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916326026] [2021-12-06 23:07:47,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:47,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 23:07:47,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 23:07:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1537, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 23:07:47,856 INFO L87 Difference]: Start difference. First operand 295 states and 333 transitions. Second operand has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 41 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:49,940 INFO L93 Difference]: Finished difference Result 693 states and 767 transitions. [2021-12-06 23:07:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-12-06 23:07:49,941 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 41 states have internal predecessors, (142), 0 states have call successors, (0), 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 66 [2021-12-06 23:07:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:49,943 INFO L225 Difference]: With dead ends: 693 [2021-12-06 23:07:49,943 INFO L226 Difference]: Without dead ends: 687 [2021-12-06 23:07:49,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 111 SyntacticMatches, 7 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 2215 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=650, Invalid=8092, Unknown=0, NotChecked=0, Total=8742 [2021-12-06 23:07:49,944 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 569 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:49,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1497 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2761 Invalid, 0 Unknown, 373 Unchecked, 0.8s Time] [2021-12-06 23:07:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-12-06 23:07:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 359. [2021-12-06 23:07:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 356 states have (on average 1.1404494382022472) internal successors, (406), 358 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) [2021-12-06 23:07:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 406 transitions. [2021-12-06 23:07:49,949 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 406 transitions. Word has length 66 [2021-12-06 23:07:49,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:49,949 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 406 transitions. [2021-12-06 23:07:49,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 41 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 406 transitions. [2021-12-06 23:07:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 23:07:49,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:49,950 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:49,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 23:07:50,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-06 23:07:50,151 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1762293009, now seen corresponding path program 4 times [2021-12-06 23:07:50,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:50,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127815710] [2021-12-06 23:07:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:50,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 58 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:07:50,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:50,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127815710] [2021-12-06 23:07:50,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127815710] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:50,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184738375] [2021-12-06 23:07:50,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:07:50,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:50,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:50,252 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:50,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 23:07:50,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:07:50,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:50,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-06 23:07:50,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:50,340 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 10 treesize of output 8 [2021-12-06 23:07:50,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:07:50,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-12-06 23:07:50,523 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 21 [2021-12-06 23:07:50,885 INFO L354 Elim1Store]: treesize reduction 3, result has 92.7 percent of original size [2021-12-06 23:07:50,885 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 34 treesize of output 51 [2021-12-06 23:07:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:07:51,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:51,648 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_953 (Array Int Int)) (|ULTIMATE.start_substring_~pt~0#1.base| Int) (|v_ULTIMATE.start_substring_~ps~0#1.offset_60| Int) (|ULTIMATE.start_substring_~pt~0#1.offset| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_953))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_substring_~pt~0#1.base|) |ULTIMATE.start_substring_~pt~0#1.offset|))) (or (< |v_ULTIMATE.start_substring_~ps~0#1.offset_60| 0) (not (= .cse0 (select (select .cse1 |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |v_ULTIMATE.start_substring_~ps~0#1.offset_60| 2)))) (< |c_ULTIMATE.start_main_~nondetString1~0#1.offset| |v_ULTIMATE.start_substring_~ps~0#1.offset_60|) (<= (+ |v_ULTIMATE.start_substring_~ps~0#1.offset_60| 4) (select |c_#length| |c_ULTIMATE.start_main_~nondetString1~0#1.base|)) (= 0 .cse0))))) is different from false [2021-12-06 23:07:51,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:51,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 42 [2021-12-06 23:07:51,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:51,673 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 111 treesize of output 120 [2021-12-06 23:07:51,684 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:51,684 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 68 treesize of output 64 [2021-12-06 23:07:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:07:52,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184738375] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:52,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:52,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 19] total 47 [2021-12-06 23:07:52,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57092525] [2021-12-06 23:07:52,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:52,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 23:07:52,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:52,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 23:07:52,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1982, Unknown=1, NotChecked=90, Total=2256 [2021-12-06 23:07:52,508 INFO L87 Difference]: Start difference. First operand 359 states and 406 transitions. Second operand has 48 states, 47 states have (on average 3.851063829787234) internal successors, (181), 48 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:54,869 INFO L93 Difference]: Finished difference Result 419 states and 464 transitions. [2021-12-06 23:07:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 23:07:54,869 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.851063829787234) internal successors, (181), 48 states have internal predecessors, (181), 0 states have call successors, (0), 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 67 [2021-12-06 23:07:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:54,871 INFO L225 Difference]: With dead ends: 419 [2021-12-06 23:07:54,871 INFO L226 Difference]: Without dead ends: 419 [2021-12-06 23:07:54,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 100 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=774, Invalid=6035, Unknown=1, NotChecked=162, Total=6972 [2021-12-06 23:07:54,872 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 225 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 349 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:54,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 352 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 928 Invalid, 0 Unknown, 349 Unchecked, 0.4s Time] [2021-12-06 23:07:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-06 23:07:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 391. [2021-12-06 23:07:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 388 states have (on average 1.1288659793814433) internal successors, (438), 390 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 438 transitions. [2021-12-06 23:07:54,876 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 438 transitions. Word has length 67 [2021-12-06 23:07:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:54,877 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 438 transitions. [2021-12-06 23:07:54,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.851063829787234) internal successors, (181), 48 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 438 transitions. [2021-12-06 23:07:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 23:07:54,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:54,877 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:54,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 23:07:55,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-06 23:07:55,079 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:55,080 INFO L85 PathProgramCache]: Analyzing trace with hash 448824744, now seen corresponding path program 5 times [2021-12-06 23:07:55,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:55,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472354913] [2021-12-06 23:07:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:55,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 52 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:55,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:55,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472354913] [2021-12-06 23:07:55,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472354913] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:55,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219824813] [2021-12-06 23:07:55,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:07:55,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:55,186 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:55,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 23:07:55,276 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 23:07:55,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:55,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 23:07:55,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:55,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:55,639 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 21 treesize of output 17 [2021-12-06 23:07:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:55,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219824813] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:55,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:55,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2021-12-06 23:07:55,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369168906] [2021-12-06 23:07:55,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:55,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 23:07:55,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:55,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 23:07:55,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-12-06 23:07:55,760 INFO L87 Difference]: Start difference. First operand 391 states and 438 transitions. Second operand has 28 states, 27 states have (on average 5.481481481481482) internal successors, (148), 28 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:56,205 INFO L93 Difference]: Finished difference Result 441 states and 486 transitions. [2021-12-06 23:07:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:07:56,205 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.481481481481482) internal successors, (148), 28 states have internal predecessors, (148), 0 states have call successors, (0), 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 67 [2021-12-06 23:07:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:56,206 INFO L225 Difference]: With dead ends: 441 [2021-12-06 23:07:56,206 INFO L226 Difference]: Without dead ends: 441 [2021-12-06 23:07:56,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=493, Invalid=1487, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 23:07:56,207 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 370 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:56,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 310 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:07:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-12-06 23:07:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 391. [2021-12-06 23:07:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 388 states have (on average 1.1262886597938144) internal successors, (437), 390 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 437 transitions. [2021-12-06 23:07:56,211 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 437 transitions. Word has length 67 [2021-12-06 23:07:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:56,211 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 437 transitions. [2021-12-06 23:07:56,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.481481481481482) internal successors, (148), 28 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 437 transitions. [2021-12-06 23:07:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 23:07:56,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:56,212 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:56,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-06 23:07:56,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-06 23:07:56,413 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:56,414 INFO L85 PathProgramCache]: Analyzing trace with hash 850414963, now seen corresponding path program 6 times [2021-12-06 23:07:56,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:56,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241135058] [2021-12-06 23:07:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:56,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:56,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:56,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241135058] [2021-12-06 23:07:56,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241135058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:56,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106831765] [2021-12-06 23:07:56,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:07:56,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:56,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:56,562 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:56,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 23:07:56,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 23:07:56,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:56,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 23:07:56,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:56,668 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 10 treesize of output 8 [2021-12-06 23:07:56,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:07:56,827 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 17 treesize of output 19 [2021-12-06 23:07:57,180 INFO L354 Elim1Store]: treesize reduction 27, result has 22.9 percent of original size [2021-12-06 23:07:57,180 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 28 treesize of output 18 [2021-12-06 23:07:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 41 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:57,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:57,368 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1034 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1034) |c_ULTIMATE.start_main_~nondetString1~0#1.base|))) (or (= 0 (select .cse0 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 2))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 3)) 0)))) is different from false [2021-12-06 23:07:57,373 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:07:57,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 36 [2021-12-06 23:07:57,383 INFO L354 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2021-12-06 23:07:57,383 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 62 treesize of output 59 [2021-12-06 23:07:57,386 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 23:07:57,387 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 23 treesize of output 15 [2021-12-06 23:07:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:07:57,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106831765] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:57,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:57,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 37 [2021-12-06 23:07:57,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311813740] [2021-12-06 23:07:57,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:57,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 23:07:57,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 23:07:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1126, Unknown=1, NotChecked=68, Total=1332 [2021-12-06 23:07:57,567 INFO L87 Difference]: Start difference. First operand 391 states and 437 transitions. Second operand has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:57,909 INFO L93 Difference]: Finished difference Result 599 states and 654 transitions. [2021-12-06 23:07:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:07:57,910 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 0 states have call successors, (0), 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 72 [2021-12-06 23:07:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:57,911 INFO L225 Difference]: With dead ends: 599 [2021-12-06 23:07:57,911 INFO L226 Difference]: Without dead ends: 490 [2021-12-06 23:07:57,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 4 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=284, Invalid=1975, Unknown=1, NotChecked=92, Total=2352 [2021-12-06 23:07:57,912 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 164 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:57,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 618 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 346 Invalid, 0 Unknown, 164 Unchecked, 0.1s Time] [2021-12-06 23:07:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-12-06 23:07:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 483. [2021-12-06 23:07:57,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 480 states have (on average 1.1208333333333333) internal successors, (538), 482 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 538 transitions. [2021-12-06 23:07:57,917 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 538 transitions. Word has length 72 [2021-12-06 23:07:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:57,917 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 538 transitions. [2021-12-06 23:07:57,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 538 transitions. [2021-12-06 23:07:57,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 23:07:57,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:57,918 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:57,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 23:07:58,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-06 23:07:58,119 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:07:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1176796164, now seen corresponding path program 6 times [2021-12-06 23:07:58,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:58,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747173515] [2021-12-06 23:07:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:58,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 20 proven. 59 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:07:58,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:58,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747173515] [2021-12-06 23:07:58,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747173515] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:58,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290716910] [2021-12-06 23:07:58,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:07:58,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:58,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:58,365 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:58,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 23:07:58,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-06 23:07:58,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:58,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 23:07:58,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:58,577 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 14 treesize of output 10 [2021-12-06 23:07:58,922 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:07:58,923 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 18 treesize of output 10 [2021-12-06 23:07:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:07:58,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:59,128 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 13 [2021-12-06 23:07:59,129 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 26 treesize of output 22 [2021-12-06 23:07:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:07:59,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290716910] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:59,236 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:59,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 41 [2021-12-06 23:07:59,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325615073] [2021-12-06 23:07:59,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:59,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 23:07:59,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:59,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 23:07:59,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1537, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 23:07:59,237 INFO L87 Difference]: Start difference. First operand 483 states and 538 transitions. Second operand has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:00,743 INFO L93 Difference]: Finished difference Result 737 states and 803 transitions. [2021-12-06 23:08:00,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-06 23:08:00,743 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 states have internal predecessors, (166), 0 states have call successors, (0), 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 74 [2021-12-06 23:08:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:00,745 INFO L225 Difference]: With dead ends: 737 [2021-12-06 23:08:00,745 INFO L226 Difference]: Without dead ends: 723 [2021-12-06 23:08:00,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=473, Invalid=6169, Unknown=0, NotChecked=0, Total=6642 [2021-12-06 23:08:00,746 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 200 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 555 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:00,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1637 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1715 Invalid, 0 Unknown, 555 Unchecked, 0.5s Time] [2021-12-06 23:08:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-12-06 23:08:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 640. [2021-12-06 23:08:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 637 states have (on average 1.1145996860282574) internal successors, (710), 639 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 710 transitions. [2021-12-06 23:08:00,753 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 710 transitions. Word has length 74 [2021-12-06 23:08:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:00,753 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 710 transitions. [2021-12-06 23:08:00,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.048780487804878) internal successors, (166), 41 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 710 transitions. [2021-12-06 23:08:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 23:08:00,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:00,754 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:00,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 23:08:00,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:00,955 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:00,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1703030388, now seen corresponding path program 6 times [2021-12-06 23:08:00,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:00,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822171251] [2021-12-06 23:08:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:00,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:01,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822171251] [2021-12-06 23:08:01,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822171251] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636920482] [2021-12-06 23:08:01,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:08:01,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:01,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:01,117 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:01,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 23:08:01,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 23:08:01,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:01,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 23:08:01,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:01,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:01,587 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 7 treesize of output 5 [2021-12-06 23:08:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:01,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636920482] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:01,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:01,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2021-12-06 23:08:01,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896942145] [2021-12-06 23:08:01,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:01,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 23:08:01,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:01,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 23:08:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 23:08:01,624 INFO L87 Difference]: Start difference. First operand 640 states and 710 transitions. Second operand has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 36 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:02,040 INFO L93 Difference]: Finished difference Result 1045 states and 1159 transitions. [2021-12-06 23:08:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:08:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 36 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-06 23:08:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:02,043 INFO L225 Difference]: With dead ends: 1045 [2021-12-06 23:08:02,043 INFO L226 Difference]: Without dead ends: 1045 [2021-12-06 23:08:02,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1743, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 23:08:02,044 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 637 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:02,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 470 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:08:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-12-06 23:08:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 877. [2021-12-06 23:08:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 874 states have (on average 1.1304347826086956) internal successors, (988), 876 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 988 transitions. [2021-12-06 23:08:02,054 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 988 transitions. Word has length 74 [2021-12-06 23:08:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:02,054 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 988 transitions. [2021-12-06 23:08:02,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 36 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 988 transitions. [2021-12-06 23:08:02,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 23:08:02,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:02,055 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:02,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 23:08:02,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:02,256 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:02,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1960256400, now seen corresponding path program 7 times [2021-12-06 23:08:02,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:02,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678996589] [2021-12-06 23:08:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:02,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:02,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:02,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678996589] [2021-12-06 23:08:02,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678996589] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:02,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56265622] [2021-12-06 23:08:02,396 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:08:02,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:02,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:02,396 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:02,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 23:08:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:02,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 23:08:02,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:02,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:02,848 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 5 treesize of output 3 [2021-12-06 23:08:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 83 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:02,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56265622] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:02,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:02,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 27 [2021-12-06 23:08:02,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322934732] [2021-12-06 23:08:02,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:02,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 23:08:02,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 23:08:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-12-06 23:08:02,888 INFO L87 Difference]: Start difference. First operand 877 states and 988 transitions. Second operand has 28 states, 27 states have (on average 6.0) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:03,202 INFO L93 Difference]: Finished difference Result 1124 states and 1270 transitions. [2021-12-06 23:08:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:08:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.0) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 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 76 [2021-12-06 23:08:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:03,206 INFO L225 Difference]: With dead ends: 1124 [2021-12-06 23:08:03,206 INFO L226 Difference]: Without dead ends: 1124 [2021-12-06 23:08:03,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 23:08:03,207 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 521 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:03,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 408 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:08:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-12-06 23:08:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 991. [2021-12-06 23:08:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 988 states have (on average 1.1376518218623481) internal successors, (1124), 990 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1124 transitions. [2021-12-06 23:08:03,217 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1124 transitions. Word has length 76 [2021-12-06 23:08:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:03,217 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1124 transitions. [2021-12-06 23:08:03,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.0) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1124 transitions. [2021-12-06 23:08:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 23:08:03,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:03,218 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:03,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 23:08:03,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-12-06 23:08:03,419 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:03,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1781498856, now seen corresponding path program 7 times [2021-12-06 23:08:03,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:03,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799280697] [2021-12-06 23:08:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:03,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 20 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:08:03,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:03,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799280697] [2021-12-06 23:08:03,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799280697] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:03,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069507519] [2021-12-06 23:08:03,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:08:03,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:03,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:03,855 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:03,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 23:08:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:03,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 23:08:03,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:03,943 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 10 treesize of output 8 [2021-12-06 23:08:04,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:08:04,181 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 17 treesize of output 19 [2021-12-06 23:08:04,455 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 23:08:04,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 23:08:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 20 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:08:04,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:04,636 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1213 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1213) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 3)) 0)) is different from false [2021-12-06 23:08:04,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:04,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:08:04,644 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:04,644 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 37 treesize of output 37 [2021-12-06 23:08:04,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:08:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 20 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:08:04,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069507519] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:04,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:04,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 44 [2021-12-06 23:08:04,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535734357] [2021-12-06 23:08:04,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:04,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 23:08:04,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 23:08:04,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1687, Unknown=1, NotChecked=82, Total=1892 [2021-12-06 23:08:04,829 INFO L87 Difference]: Start difference. First operand 991 states and 1124 transitions. Second operand has 44 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 44 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:05,624 INFO L93 Difference]: Finished difference Result 971 states and 1095 transitions. [2021-12-06 23:08:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:08:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 44 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-06 23:08:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:05,627 INFO L225 Difference]: With dead ends: 971 [2021-12-06 23:08:05,627 INFO L226 Difference]: Without dead ends: 867 [2021-12-06 23:08:05,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=279, Invalid=3384, Unknown=1, NotChecked=118, Total=3782 [2021-12-06 23:08:05,628 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 124 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:05,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 856 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1165 Invalid, 0 Unknown, 158 Unchecked, 0.3s Time] [2021-12-06 23:08:05,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-12-06 23:08:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 852. [2021-12-06 23:08:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 849 states have (on average 1.1354534746760896) internal successors, (964), 851 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 964 transitions. [2021-12-06 23:08:05,636 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 964 transitions. Word has length 78 [2021-12-06 23:08:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:05,636 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 964 transitions. [2021-12-06 23:08:05,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.9545454545454546) internal successors, (130), 44 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:05,636 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 964 transitions. [2021-12-06 23:08:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 23:08:05,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:05,637 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:05,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 23:08:05,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:05,838 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash 515705984, now seen corresponding path program 8 times [2021-12-06 23:08:05,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:05,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647772692] [2021-12-06 23:08:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:05,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 80 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:08:06,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:06,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647772692] [2021-12-06 23:08:06,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647772692] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:06,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169267736] [2021-12-06 23:08:06,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:08:06,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:06,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:06,066 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:06,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 23:08:06,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:08:06,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:06,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 23:08:06,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:06,250 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 14 treesize of output 10 [2021-12-06 23:08:06,649 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:08:06,650 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 18 treesize of output 10 [2021-12-06 23:08:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 10 proven. 93 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:08:06,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:06,851 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 13 [2021-12-06 23:08:06,852 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 26 treesize of output 22 [2021-12-06 23:08:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 10 proven. 93 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:08:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169267736] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:06,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:06,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 41 [2021-12-06 23:08:06,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714429202] [2021-12-06 23:08:06,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:06,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 23:08:06,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:06,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 23:08:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1537, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 23:08:06,972 INFO L87 Difference]: Start difference. First operand 852 states and 964 transitions. Second operand has 41 states, 41 states have (on average 4.121951219512195) internal successors, (169), 41 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:08,229 INFO L93 Difference]: Finished difference Result 843 states and 928 transitions. [2021-12-06 23:08:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-06 23:08:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.121951219512195) internal successors, (169), 41 states have internal predecessors, (169), 0 states have call successors, (0), 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 81 [2021-12-06 23:08:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:08,232 INFO L225 Difference]: With dead ends: 843 [2021-12-06 23:08:08,232 INFO L226 Difference]: Without dead ends: 700 [2021-12-06 23:08:08,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=414, Invalid=6066, Unknown=0, NotChecked=0, Total=6480 [2021-12-06 23:08:08,233 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 114 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:08,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1362 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 957 Invalid, 0 Unknown, 411 Unchecked, 0.3s Time] [2021-12-06 23:08:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-12-06 23:08:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 577. [2021-12-06 23:08:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 574 states have (on average 1.1341463414634145) internal successors, (651), 576 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 651 transitions. [2021-12-06 23:08:08,239 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 651 transitions. Word has length 81 [2021-12-06 23:08:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:08,240 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 651 transitions. [2021-12-06 23:08:08,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.121951219512195) internal successors, (169), 41 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 651 transitions. [2021-12-06 23:08:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 23:08:08,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:08,240 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:08,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-06 23:08:08,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:08,442 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:08,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1514648788, now seen corresponding path program 7 times [2021-12-06 23:08:08,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:08,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243725323] [2021-12-06 23:08:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:08,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:09,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243725323] [2021-12-06 23:08:09,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243725323] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:09,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189665322] [2021-12-06 23:08:09,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:08:09,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:09,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:09,088 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:09,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 23:08:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:09,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-06 23:08:09,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:09,340 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 14 treesize of output 10 [2021-12-06 23:08:09,674 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-06 23:08:09,675 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 25 treesize of output 11 [2021-12-06 23:08:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:09,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:09,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-12-06 23:08:09,989 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 23:08:09,989 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 51 treesize of output 43 [2021-12-06 23:08:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:10,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189665322] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:10,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:10,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 55 [2021-12-06 23:08:10,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983252290] [2021-12-06 23:08:10,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:10,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-06 23:08:10,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:10,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-06 23:08:10,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2784, Unknown=0, NotChecked=0, Total=2970 [2021-12-06 23:08:10,254 INFO L87 Difference]: Start difference. First operand 577 states and 651 transitions. Second operand has 55 states, 55 states have (on average 3.1272727272727274) internal successors, (172), 55 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:14,664 INFO L93 Difference]: Finished difference Result 1779 states and 1963 transitions. [2021-12-06 23:08:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-06 23:08:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.1272727272727274) internal successors, (172), 55 states have internal predecessors, (172), 0 states have call successors, (0), 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 81 [2021-12-06 23:08:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:14,670 INFO L225 Difference]: With dead ends: 1779 [2021-12-06 23:08:14,670 INFO L226 Difference]: Without dead ends: 1749 [2021-12-06 23:08:14,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1157, Invalid=11053, Unknown=0, NotChecked=0, Total=12210 [2021-12-06 23:08:14,671 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 1494 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:14,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 2543 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2995 Invalid, 0 Unknown, 363 Unchecked, 1.3s Time] [2021-12-06 23:08:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2021-12-06 23:08:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 947. [2021-12-06 23:08:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 944 states have (on average 1.1408898305084745) internal successors, (1077), 946 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1077 transitions. [2021-12-06 23:08:14,683 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1077 transitions. Word has length 81 [2021-12-06 23:08:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:14,683 INFO L470 AbstractCegarLoop]: Abstraction has 947 states and 1077 transitions. [2021-12-06 23:08:14,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.1272727272727274) internal successors, (172), 55 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1077 transitions. [2021-12-06 23:08:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 23:08:14,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:14,685 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:14,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 23:08:14,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-12-06 23:08:14,886 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:14,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1760327563, now seen corresponding path program 9 times [2021-12-06 23:08:14,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:14,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866348804] [2021-12-06 23:08:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:14,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:08:15,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:15,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866348804] [2021-12-06 23:08:15,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866348804] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:15,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959019934] [2021-12-06 23:08:15,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:08:15,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:15,038 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:15,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 23:08:15,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 23:08:15,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:15,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 23:08:15,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:15,139 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:08:15,139 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:08:15,148 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 10 treesize of output 8 [2021-12-06 23:08:15,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:08:15,321 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 17 treesize of output 19 [2021-12-06 23:08:16,075 INFO L354 Elim1Store]: treesize reduction 1, result has 97.4 percent of original size [2021-12-06 23:08:16,075 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 33 treesize of output 51 [2021-12-06 23:08:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-06 23:08:16,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:17,272 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:17,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 40 [2021-12-06 23:08:17,288 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:17,288 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 103 treesize of output 112 [2021-12-06 23:08:17,299 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:17,299 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 64 treesize of output 62 [2021-12-06 23:08:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-06 23:08:17,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959019934] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:17,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:17,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2021-12-06 23:08:17,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883856211] [2021-12-06 23:08:17,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:17,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 23:08:17,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 23:08:17,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1278, Unknown=12, NotChecked=0, Total=1406 [2021-12-06 23:08:17,732 INFO L87 Difference]: Start difference. First operand 947 states and 1077 transitions. Second operand has 38 states, 37 states have (on average 4.486486486486487) internal successors, (166), 38 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:19,605 INFO L93 Difference]: Finished difference Result 1419 states and 1593 transitions. [2021-12-06 23:08:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 23:08:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 4.486486486486487) internal successors, (166), 38 states have internal predecessors, (166), 0 states have call successors, (0), 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 82 [2021-12-06 23:08:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:19,612 INFO L225 Difference]: With dead ends: 1419 [2021-12-06 23:08:19,612 INFO L226 Difference]: Without dead ends: 1419 [2021-12-06 23:08:19,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1789 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=787, Invalid=7757, Unknown=12, NotChecked=0, Total=8556 [2021-12-06 23:08:19,613 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:19,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 235 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 141 Unchecked, 0.1s Time] [2021-12-06 23:08:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-12-06 23:08:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1368. [2021-12-06 23:08:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1365 states have (on average 1.128937728937729) internal successors, (1541), 1367 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1541 transitions. [2021-12-06 23:08:19,626 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1541 transitions. Word has length 82 [2021-12-06 23:08:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:19,626 INFO L470 AbstractCegarLoop]: Abstraction has 1368 states and 1541 transitions. [2021-12-06 23:08:19,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 4.486486486486487) internal successors, (166), 38 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1541 transitions. [2021-12-06 23:08:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 23:08:19,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:19,627 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:19,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-06 23:08:19,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-12-06 23:08:19,828 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:19,830 INFO L85 PathProgramCache]: Analyzing trace with hash -725839209, now seen corresponding path program 8 times [2021-12-06 23:08:19,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:19,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898692874] [2021-12-06 23:08:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:19,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:20,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:20,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898692874] [2021-12-06 23:08:20,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898692874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:20,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605267011] [2021-12-06 23:08:20,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:08:20,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:20,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:20,025 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:20,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 23:08:20,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:08:20,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:20,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 23:08:20,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 28 proven. 92 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:20,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:20,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 23:08:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 28 proven. 92 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:08:20,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605267011] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:20,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:20,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2021-12-06 23:08:20,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008364357] [2021-12-06 23:08:20,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:20,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 23:08:20,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:20,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 23:08:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 23:08:20,562 INFO L87 Difference]: Start difference. First operand 1368 states and 1541 transitions. Second operand has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 36 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:21,339 INFO L93 Difference]: Finished difference Result 1789 states and 2014 transitions. [2021-12-06 23:08:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:08:21,339 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 36 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-12-06 23:08:21,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:21,345 INFO L225 Difference]: With dead ends: 1789 [2021-12-06 23:08:21,345 INFO L226 Difference]: Without dead ends: 1789 [2021-12-06 23:08:21,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 23:08:21,345 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 489 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:21,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 915 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:08:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2021-12-06 23:08:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1610. [2021-12-06 23:08:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1607 states have (on average 1.1418792781580585) internal successors, (1835), 1609 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1835 transitions. [2021-12-06 23:08:21,361 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1835 transitions. Word has length 85 [2021-12-06 23:08:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:21,362 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 1835 transitions. [2021-12-06 23:08:21,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.371428571428571) internal successors, (153), 36 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:21,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1835 transitions. [2021-12-06 23:08:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 23:08:21,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:21,363 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:21,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-12-06 23:08:21,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:21,563 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:21,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:21,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1679386246, now seen corresponding path program 8 times [2021-12-06 23:08:21,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:21,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970898761] [2021-12-06 23:08:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:21,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 41 proven. 102 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:21,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:21,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970898761] [2021-12-06 23:08:21,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970898761] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:21,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035854922] [2021-12-06 23:08:21,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:08:21,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:21,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:21,723 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:21,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 23:08:21,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:08:21,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:21,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 23:08:21,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:21,833 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 10 treesize of output 8 [2021-12-06 23:08:21,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:08:22,006 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 17 treesize of output 19 [2021-12-06 23:08:22,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:08:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 41 proven. 102 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:22,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:22,247 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1457 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1457) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 4)) 0)) is different from false [2021-12-06 23:08:22,251 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:22,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:08:22,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:22,255 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 37 treesize of output 37 [2021-12-06 23:08:22,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:08:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 41 proven. 102 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:22,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035854922] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:22,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:22,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 31 [2021-12-06 23:08:22,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001620797] [2021-12-06 23:08:22,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:22,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 23:08:22,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 23:08:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=782, Unknown=1, NotChecked=56, Total=930 [2021-12-06 23:08:22,404 INFO L87 Difference]: Start difference. First operand 1610 states and 1835 transitions. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:22,718 INFO L93 Difference]: Finished difference Result 2279 states and 2566 transitions. [2021-12-06 23:08:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:08:22,719 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 87 [2021-12-06 23:08:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:22,725 INFO L225 Difference]: With dead ends: 2279 [2021-12-06 23:08:22,725 INFO L226 Difference]: Without dead ends: 2112 [2021-12-06 23:08:22,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1259, Unknown=1, NotChecked=72, Total=1482 [2021-12-06 23:08:22,726 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 79 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:22,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 646 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 637 Invalid, 0 Unknown, 171 Unchecked, 0.2s Time] [2021-12-06 23:08:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-12-06 23:08:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2049. [2021-12-06 23:08:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2046 states have (on average 1.130987292277615) internal successors, (2314), 2048 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2314 transitions. [2021-12-06 23:08:22,743 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2314 transitions. Word has length 87 [2021-12-06 23:08:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:22,744 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2314 transitions. [2021-12-06 23:08:22,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:22,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2314 transitions. [2021-12-06 23:08:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 23:08:22,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:22,745 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:22,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-06 23:08:22,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-12-06 23:08:22,946 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1346231488, now seen corresponding path program 10 times [2021-12-06 23:08:22,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626348346] [2021-12-06 23:08:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:22,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 6 proven. 128 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:08:23,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626348346] [2021-12-06 23:08:23,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626348346] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:23,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922874293] [2021-12-06 23:08:23,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:08:23,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:23,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:23,096 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:23,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 23:08:23,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:08:23,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:23,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-06 23:08:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:23,217 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:08:23,217 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:08:23,593 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 14 treesize of output 10 [2021-12-06 23:08:23,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:08:23,638 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 17 treesize of output 19 [2021-12-06 23:08:25,214 INFO L354 Elim1Store]: treesize reduction 1, result has 97.4 percent of original size [2021-12-06 23:08:25,214 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 33 treesize of output 51 [2021-12-06 23:08:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 18 proven. 122 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:08:25,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:26,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:26,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 42 [2021-12-06 23:08:26,621 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:26,621 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 111 treesize of output 120 [2021-12-06 23:08:26,631 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:26,631 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 68 treesize of output 64 [2021-12-06 23:08:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 28 proven. 112 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:08:27,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922874293] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:27,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:27,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25, 25] total 61 [2021-12-06 23:08:27,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128230310] [2021-12-06 23:08:27,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:27,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-06 23:08:27,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-06 23:08:27,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=3451, Unknown=16, NotChecked=0, Total=3782 [2021-12-06 23:08:27,890 INFO L87 Difference]: Start difference. First operand 2049 states and 2314 transitions. Second operand has 62 states, 61 states have (on average 3.8852459016393444) internal successors, (237), 62 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:33,404 INFO L93 Difference]: Finished difference Result 2516 states and 2806 transitions. [2021-12-06 23:08:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-12-06 23:08:33,404 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.8852459016393444) internal successors, (237), 62 states have internal predecessors, (237), 0 states have call successors, (0), 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 89 [2021-12-06 23:08:33,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:33,412 INFO L225 Difference]: With dead ends: 2516 [2021-12-06 23:08:33,412 INFO L226 Difference]: Without dead ends: 2482 [2021-12-06 23:08:33,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6444 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1886, Invalid=21027, Unknown=39, NotChecked=0, Total=22952 [2021-12-06 23:08:33,413 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 192 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:33,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 392 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 415 Invalid, 0 Unknown, 461 Unchecked, 0.2s Time] [2021-12-06 23:08:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-12-06 23:08:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2153. [2021-12-06 23:08:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2150 states have (on average 1.1288372093023256) internal successors, (2427), 2152 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2427 transitions. [2021-12-06 23:08:33,432 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2427 transitions. Word has length 89 [2021-12-06 23:08:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:33,432 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2427 transitions. [2021-12-06 23:08:33,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.8852459016393444) internal successors, (237), 62 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2427 transitions. [2021-12-06 23:08:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 23:08:33,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:33,434 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:33,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-06 23:08:33,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:33,634 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:33,634 INFO L85 PathProgramCache]: Analyzing trace with hash -544017089, now seen corresponding path program 11 times [2021-12-06 23:08:33,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:33,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901718277] [2021-12-06 23:08:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:33,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:08:33,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:33,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901718277] [2021-12-06 23:08:33,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901718277] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:33,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067751404] [2021-12-06 23:08:33,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:08:33,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:33,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:33,741 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:33,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 23:08:33,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 23:08:33,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:33,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-06 23:08:33,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:33,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:08:33,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:08:33,868 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 10 treesize of output 8 [2021-12-06 23:08:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 15 proven. 109 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:08:34,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 28 proven. 96 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:08:34,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067751404] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:34,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:34,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 33 [2021-12-06 23:08:34,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822288364] [2021-12-06 23:08:34,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:34,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 23:08:34,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 23:08:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 23:08:34,632 INFO L87 Difference]: Start difference. First operand 2153 states and 2427 transitions. Second operand has 34 states, 33 states have (on average 6.212121212121212) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:35,346 INFO L93 Difference]: Finished difference Result 2342 states and 2605 transitions. [2021-12-06 23:08:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 23:08:35,346 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 6.212121212121212) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 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 89 [2021-12-06 23:08:35,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:35,354 INFO L225 Difference]: With dead ends: 2342 [2021-12-06 23:08:35,354 INFO L226 Difference]: Without dead ends: 2342 [2021-12-06 23:08:35,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=616, Invalid=2354, Unknown=0, NotChecked=0, Total=2970 [2021-12-06 23:08:35,354 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 969 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:35,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 346 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:08:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-12-06 23:08:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2153. [2021-12-06 23:08:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2150 states have (on average 1.126046511627907) internal successors, (2421), 2152 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2421 transitions. [2021-12-06 23:08:35,374 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2421 transitions. Word has length 89 [2021-12-06 23:08:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:35,374 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2421 transitions. [2021-12-06 23:08:35,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 6.212121212121212) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2421 transitions. [2021-12-06 23:08:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 23:08:35,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:35,375 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:35,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 23:08:35,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-12-06 23:08:35,576 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1303579462, now seen corresponding path program 12 times [2021-12-06 23:08:35,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:35,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355055956] [2021-12-06 23:08:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:35,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 6 proven. 112 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:08:35,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:35,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355055956] [2021-12-06 23:08:35,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355055956] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:35,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976276708] [2021-12-06 23:08:35,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:08:35,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:35,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:35,719 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:35,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 23:08:35,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 23:08:35,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:35,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 23:08:35,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:08:35,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:08:35,870 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 10 treesize of output 8 [2021-12-06 23:08:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 103 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:08:36,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 28 proven. 90 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:08:36,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976276708] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:36,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:36,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2021-12-06 23:08:36,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500857252] [2021-12-06 23:08:36,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:36,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 23:08:36,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:36,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 23:08:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1252, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 23:08:36,724 INFO L87 Difference]: Start difference. First operand 2153 states and 2421 transitions. Second operand has 38 states, 37 states have (on average 5.54054054054054) internal successors, (205), 38 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:37,699 INFO L93 Difference]: Finished difference Result 2288 states and 2549 transitions. [2021-12-06 23:08:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 23:08:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.54054054054054) internal successors, (205), 38 states have internal predecessors, (205), 0 states have call successors, (0), 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 89 [2021-12-06 23:08:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:37,707 INFO L225 Difference]: With dead ends: 2288 [2021-12-06 23:08:37,707 INFO L226 Difference]: Without dead ends: 2288 [2021-12-06 23:08:37,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=890, Invalid=3142, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 23:08:37,707 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 972 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:37,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 362 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:08:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2021-12-06 23:08:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2134. [2021-12-06 23:08:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2131 states have (on average 1.1243547630220554) internal successors, (2396), 2133 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:37,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2396 transitions. [2021-12-06 23:08:37,729 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2396 transitions. Word has length 89 [2021-12-06 23:08:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:37,729 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 2396 transitions. [2021-12-06 23:08:37,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.54054054054054) internal successors, (205), 38 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2396 transitions. [2021-12-06 23:08:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 23:08:37,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:37,731 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:37,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-12-06 23:08:37,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-12-06 23:08:37,931 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:37,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2046876227, now seen corresponding path program 9 times [2021-12-06 23:08:37,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:37,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364413796] [2021-12-06 23:08:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:37,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 15 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:08:38,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:38,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364413796] [2021-12-06 23:08:38,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364413796] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:38,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312092999] [2021-12-06 23:08:38,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:08:38,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:38,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:38,057 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:38,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 23:08:38,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 23:08:38,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:38,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 23:08:38,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 41 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:38,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:38,764 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 7 treesize of output 5 [2021-12-06 23:08:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 28 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:38,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312092999] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:38,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:38,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 18] total 43 [2021-12-06 23:08:38,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365862792] [2021-12-06 23:08:38,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:38,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 23:08:38,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 23:08:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1649, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 23:08:38,840 INFO L87 Difference]: Start difference. First operand 2134 states and 2396 transitions. Second operand has 44 states, 43 states have (on average 5.72093023255814) internal successors, (246), 44 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:39,647 INFO L93 Difference]: Finished difference Result 2715 states and 3044 transitions. [2021-12-06 23:08:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 23:08:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 5.72093023255814) internal successors, (246), 44 states have internal predecessors, (246), 0 states have call successors, (0), 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 91 [2021-12-06 23:08:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:39,657 INFO L225 Difference]: With dead ends: 2715 [2021-12-06 23:08:39,657 INFO L226 Difference]: Without dead ends: 2715 [2021-12-06 23:08:39,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=792, Invalid=3114, Unknown=0, NotChecked=0, Total=3906 [2021-12-06 23:08:39,657 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 1300 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:39,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1300 Valid, 553 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:08:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2021-12-06 23:08:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2400. [2021-12-06 23:08:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2397 states have (on average 1.1268251981643722) internal successors, (2701), 2399 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2701 transitions. [2021-12-06 23:08:39,674 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2701 transitions. Word has length 91 [2021-12-06 23:08:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:39,674 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2701 transitions. [2021-12-06 23:08:39,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 5.72093023255814) internal successors, (246), 44 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2701 transitions. [2021-12-06 23:08:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 23:08:39,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:39,676 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:39,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 23:08:39,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:39,877 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash -137707159, now seen corresponding path program 9 times [2021-12-06 23:08:39,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:39,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173472753] [2021-12-06 23:08:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:39,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 78 proven. 61 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:08:40,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:40,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173472753] [2021-12-06 23:08:40,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173472753] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:40,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444638492] [2021-12-06 23:08:40,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:08:40,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:40,044 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:40,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 23:08:40,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 23:08:40,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:40,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 23:08:40,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:40,257 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:08:40,257 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:08:40,266 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 10 treesize of output 8 [2021-12-06 23:08:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 28 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:08:40,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 28 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:08:40,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444638492] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:40,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:40,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 37 [2021-12-06 23:08:40,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485345568] [2021-12-06 23:08:40,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:40,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 23:08:40,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 23:08:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1122, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 23:08:40,930 INFO L87 Difference]: Start difference. First operand 2400 states and 2701 transitions. Second operand has 37 states, 37 states have (on average 4.891891891891892) internal successors, (181), 37 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:41,834 INFO L93 Difference]: Finished difference Result 2542 states and 2820 transitions. [2021-12-06 23:08:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:08:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.891891891891892) internal successors, (181), 37 states have internal predecessors, (181), 0 states have call successors, (0), 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 92 [2021-12-06 23:08:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:41,841 INFO L225 Difference]: With dead ends: 2542 [2021-12-06 23:08:41,841 INFO L226 Difference]: Without dead ends: 2483 [2021-12-06 23:08:41,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=810, Invalid=2850, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 23:08:41,842 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 375 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:41,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 387 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:08:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-12-06 23:08:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2289. [2021-12-06 23:08:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2286 states have (on average 1.1237970253718286) internal successors, (2569), 2288 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 2569 transitions. [2021-12-06 23:08:41,859 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 2569 transitions. Word has length 92 [2021-12-06 23:08:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:41,859 INFO L470 AbstractCegarLoop]: Abstraction has 2289 states and 2569 transitions. [2021-12-06 23:08:41,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.891891891891892) internal successors, (181), 37 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 2569 transitions. [2021-12-06 23:08:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 23:08:41,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:41,861 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:41,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-12-06 23:08:42,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:42,062 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1392923804, now seen corresponding path program 13 times [2021-12-06 23:08:42,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:42,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229872074] [2021-12-06 23:08:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:42,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 161 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 23:08:42,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:42,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229872074] [2021-12-06 23:08:42,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229872074] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:42,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907057899] [2021-12-06 23:08:42,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:08:42,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:42,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:42,217 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:42,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-06 23:08:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:42,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 23:08:42,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:42,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:08:42,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:08:42,327 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 10 treesize of output 8 [2021-12-06 23:08:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 15 proven. 152 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 23:08:42,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 28 proven. 139 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 23:08:43,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907057899] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:43,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:43,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2021-12-06 23:08:43,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153294278] [2021-12-06 23:08:43,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:43,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 23:08:43,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 23:08:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 23:08:43,185 INFO L87 Difference]: Start difference. First operand 2289 states and 2569 transitions. Second operand has 37 states, 36 states have (on average 6.194444444444445) internal successors, (223), 37 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:43,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:43,998 INFO L93 Difference]: Finished difference Result 2425 states and 2692 transitions. [2021-12-06 23:08:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:08:43,998 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 6.194444444444445) internal successors, (223), 37 states have internal predecessors, (223), 0 states have call successors, (0), 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 96 [2021-12-06 23:08:43,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:44,002 INFO L225 Difference]: With dead ends: 2425 [2021-12-06 23:08:44,002 INFO L226 Difference]: Without dead ends: 2339 [2021-12-06 23:08:44,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=678, Invalid=2744, Unknown=0, NotChecked=0, Total=3422 [2021-12-06 23:08:44,003 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 899 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:44,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 381 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:08:44,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2021-12-06 23:08:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2096. [2021-12-06 23:08:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2093 states have (on average 1.1285236502627807) internal successors, (2362), 2095 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2362 transitions. [2021-12-06 23:08:44,020 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2362 transitions. Word has length 96 [2021-12-06 23:08:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:44,020 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 2362 transitions. [2021-12-06 23:08:44,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 6.194444444444445) internal successors, (223), 37 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2362 transitions. [2021-12-06 23:08:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 23:08:44,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:44,021 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:44,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-12-06 23:08:44,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:44,222 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash -176265466, now seen corresponding path program 10 times [2021-12-06 23:08:44,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:44,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004811073] [2021-12-06 23:08:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:44,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 26 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:08:45,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:45,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004811073] [2021-12-06 23:08:45,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004811073] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:45,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152296270] [2021-12-06 23:08:45,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:08:45,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:45,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:45,034 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:45,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-06 23:08:45,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:08:45,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:45,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 23:08:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:45,143 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:08:45,144 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:08:45,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:08:46,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:08:46,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 23:08:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 101 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:08:46,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:47,300 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 13 treesize of output 11 [2021-12-06 23:08:47,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:08:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:08:48,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152296270] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:48,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:48,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 21, 21] total 63 [2021-12-06 23:08:48,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257304676] [2021-12-06 23:08:48,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:48,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-12-06 23:08:48,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-12-06 23:08:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=3628, Unknown=1, NotChecked=0, Total=3906 [2021-12-06 23:08:48,034 INFO L87 Difference]: Start difference. First operand 2096 states and 2362 transitions. Second operand has 63 states, 63 states have (on average 3.7142857142857144) internal successors, (234), 63 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:52,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:52,123 INFO L93 Difference]: Finished difference Result 2306 states and 2594 transitions. [2021-12-06 23:08:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-06 23:08:52,123 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.7142857142857144) internal successors, (234), 63 states have internal predecessors, (234), 0 states have call successors, (0), 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 96 [2021-12-06 23:08:52,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:52,126 INFO L225 Difference]: With dead ends: 2306 [2021-12-06 23:08:52,126 INFO L226 Difference]: Without dead ends: 2302 [2021-12-06 23:08:52,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1370, Invalid=13391, Unknown=1, NotChecked=0, Total=14762 [2021-12-06 23:08:52,127 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 450 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 759 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:52,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 2284 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1665 Invalid, 0 Unknown, 759 Unchecked, 0.7s Time] [2021-12-06 23:08:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-12-06 23:08:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2140. [2021-12-06 23:08:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2137 states have (on average 1.1282171268132897) internal successors, (2411), 2139 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2411 transitions. [2021-12-06 23:08:52,142 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2411 transitions. Word has length 96 [2021-12-06 23:08:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:52,142 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2411 transitions. [2021-12-06 23:08:52,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.7142857142857144) internal successors, (234), 63 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2411 transitions. [2021-12-06 23:08:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 23:08:52,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:52,144 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:52,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-12-06 23:08:52,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-12-06 23:08:52,345 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash 722795977, now seen corresponding path program 14 times [2021-12-06 23:08:52,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:52,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873203317] [2021-12-06 23:08:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:52,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 30 proven. 159 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:08:53,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:53,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873203317] [2021-12-06 23:08:53,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873203317] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:53,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866335102] [2021-12-06 23:08:53,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:08:53,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:53,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:53,103 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:53,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-06 23:08:53,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:08:53,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:53,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-06 23:08:53,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:53,211 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 10 treesize of output 8 [2021-12-06 23:08:53,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:08:53,538 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 17 treesize of output 19 [2021-12-06 23:08:53,875 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 23:08:53,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 23:08:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 30 proven. 144 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:08:53,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:54,089 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1863 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_1863) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 4)))) is different from false [2021-12-06 23:08:54,092 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:54,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:08:54,095 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:54,096 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 37 treesize of output 37 [2021-12-06 23:08:54,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:08:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 30 proven. 144 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:08:54,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866335102] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:54,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:08:54,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 23, 23] total 53 [2021-12-06 23:08:54,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867751850] [2021-12-06 23:08:54,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:54,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 23:08:54,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 23:08:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2509, Unknown=1, NotChecked=100, Total=2756 [2021-12-06 23:08:54,336 INFO L87 Difference]: Start difference. First operand 2140 states and 2411 transitions. Second operand has 53 states, 53 states have (on average 2.981132075471698) internal successors, (158), 53 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:55,995 INFO L93 Difference]: Finished difference Result 2133 states and 2396 transitions. [2021-12-06 23:08:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:08:55,995 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.981132075471698) internal successors, (158), 53 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-06 23:08:55,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:55,997 INFO L225 Difference]: With dead ends: 2133 [2021-12-06 23:08:55,997 INFO L226 Difference]: Without dead ends: 1910 [2021-12-06 23:08:55,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=409, Invalid=5755, Unknown=2, NotChecked=154, Total=6320 [2021-12-06 23:08:55,998 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 237 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:55,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 1305 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2217 Invalid, 0 Unknown, 368 Unchecked, 0.7s Time] [2021-12-06 23:08:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-12-06 23:08:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1893. [2021-12-06 23:08:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1890 states have (on average 1.1306878306878307) internal successors, (2137), 1892 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2137 transitions. [2021-12-06 23:08:56,010 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2137 transitions. Word has length 100 [2021-12-06 23:08:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:56,010 INFO L470 AbstractCegarLoop]: Abstraction has 1893 states and 2137 transitions. [2021-12-06 23:08:56,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.981132075471698) internal successors, (158), 53 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:08:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2137 transitions. [2021-12-06 23:08:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 23:08:56,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:56,012 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:56,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-12-06 23:08:56,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:56,213 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:08:56,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1191848042, now seen corresponding path program 15 times [2021-12-06 23:08:56,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:56,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376364902] [2021-12-06 23:08:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:56,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 30 proven. 134 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:08:56,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:56,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376364902] [2021-12-06 23:08:56,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376364902] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:08:56,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467033764] [2021-12-06 23:08:56,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:08:56,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:56,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:56,665 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:56,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-06 23:08:56,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 23:08:56,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:56,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-06 23:08:56,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:56,798 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 10 treesize of output 8 [2021-12-06 23:08:56,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:08:56,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:08:57,002 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 17 treesize of output 19 [2021-12-06 23:08:58,067 INFO L354 Elim1Store]: treesize reduction 1, result has 97.4 percent of original size [2021-12-06 23:08:58,067 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 33 treesize of output 51 [2021-12-06 23:08:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 97 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 23:08:58,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:59,892 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:59,892 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 40 [2021-12-06 23:08:59,907 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:59,907 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 103 treesize of output 112 [2021-12-06 23:08:59,918 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:08:59,918 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 64 treesize of output 62 [2021-12-06 23:09:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 23:09:00,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467033764] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:00,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:00,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13, 13] total 51 [2021-12-06 23:09:00,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127565050] [2021-12-06 23:09:00,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:00,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-06 23:09:00,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-06 23:09:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2378, Unknown=32, NotChecked=0, Total=2550 [2021-12-06 23:09:00,505 INFO L87 Difference]: Start difference. First operand 1893 states and 2137 transitions. Second operand has 51 states, 51 states have (on average 3.450980392156863) internal successors, (176), 51 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:03,736 INFO L93 Difference]: Finished difference Result 1966 states and 2167 transitions. [2021-12-06 23:09:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-12-06 23:09:03,736 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.450980392156863) internal successors, (176), 51 states have internal predecessors, (176), 0 states have call successors, (0), 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 100 [2021-12-06 23:09:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:03,738 INFO L225 Difference]: With dead ends: 1966 [2021-12-06 23:09:03,738 INFO L226 Difference]: Without dead ends: 1612 [2021-12-06 23:09:03,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2720 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=920, Invalid=12620, Unknown=32, NotChecked=0, Total=13572 [2021-12-06 23:09:03,739 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:03,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 517 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 468 Invalid, 0 Unknown, 97 Unchecked, 0.2s Time] [2021-12-06 23:09:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2021-12-06 23:09:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1115. [2021-12-06 23:09:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1113 states have (on average 1.1123090745732256) internal successors, (1238), 1114 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1238 transitions. [2021-12-06 23:09:03,747 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1238 transitions. Word has length 100 [2021-12-06 23:09:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:03,747 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1238 transitions. [2021-12-06 23:09:03,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.450980392156863) internal successors, (176), 51 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1238 transitions. [2021-12-06 23:09:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 23:09:03,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:03,749 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:03,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-12-06 23:09:03,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:03,949 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1860717283, now seen corresponding path program 11 times [2021-12-06 23:09:03,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:03,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015428321] [2021-12-06 23:09:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:03,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 28 proven. 149 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:09:04,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:04,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015428321] [2021-12-06 23:09:04,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015428321] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:04,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952709532] [2021-12-06 23:09:04,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:09:04,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:04,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:04,155 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:04,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-06 23:09:04,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 23:09:04,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:04,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 23:09:04,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:04,301 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:09:04,301 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:09:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:09:04,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 66 proven. 111 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:09:05,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952709532] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:05,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:05,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 45 [2021-12-06 23:09:05,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292386282] [2021-12-06 23:09:05,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:05,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 23:09:05,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:05,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 23:09:05,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1797, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 23:09:05,268 INFO L87 Difference]: Start difference. First operand 1115 states and 1238 transitions. Second operand has 46 states, 45 states have (on average 4.955555555555556) internal successors, (223), 46 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:06,297 INFO L93 Difference]: Finished difference Result 1606 states and 1770 transitions. [2021-12-06 23:09:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 23:09:06,297 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.955555555555556) internal successors, (223), 46 states have internal predecessors, (223), 0 states have call successors, (0), 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 100 [2021-12-06 23:09:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:06,298 INFO L225 Difference]: With dead ends: 1606 [2021-12-06 23:09:06,299 INFO L226 Difference]: Without dead ends: 1606 [2021-12-06 23:09:06,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=855, Invalid=3305, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 23:09:06,299 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 601 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:06,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 977 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:09:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-12-06 23:09:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1395. [2021-12-06 23:09:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1393 states have (on average 1.1198851399856424) internal successors, (1560), 1394 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1560 transitions. [2021-12-06 23:09:06,309 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1560 transitions. Word has length 100 [2021-12-06 23:09:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:06,309 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 1560 transitions. [2021-12-06 23:09:06,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.955555555555556) internal successors, (223), 46 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1560 transitions. [2021-12-06 23:09:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 23:09:06,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:06,310 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:06,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-12-06 23:09:06,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-12-06 23:09:06,511 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:06,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2135124269, now seen corresponding path program 10 times [2021-12-06 23:09:06,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:06,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581880141] [2021-12-06 23:09:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:06,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 51 proven. 165 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:09:06,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581880141] [2021-12-06 23:09:06,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581880141] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035923506] [2021-12-06 23:09:06,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:09:06,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:06,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:06,937 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:06,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-12-06 23:09:07,051 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:09:07,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:07,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 23:09:07,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:07,066 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 10 treesize of output 8 [2021-12-06 23:09:07,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:09:07,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:09:07,414 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 17 treesize of output 19 [2021-12-06 23:09:07,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:07,995 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 17 treesize of output 17 [2021-12-06 23:09:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 141 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:09:08,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:08,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:08,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:09:08,635 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:08,635 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 37 treesize of output 37 [2021-12-06 23:09:08,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:09:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 26 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:09:09,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035923506] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:09,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:09,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 59 [2021-12-06 23:09:09,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922663436] [2021-12-06 23:09:09,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:09,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-12-06 23:09:09,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-12-06 23:09:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3164, Unknown=5, NotChecked=0, Total=3422 [2021-12-06 23:09:09,353 INFO L87 Difference]: Start difference. First operand 1395 states and 1560 transitions. Second operand has 59 states, 59 states have (on average 4.88135593220339) internal successors, (288), 59 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:10,348 INFO L93 Difference]: Finished difference Result 1788 states and 1979 transitions. [2021-12-06 23:09:10,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:09:10,348 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.88135593220339) internal successors, (288), 59 states have internal predecessors, (288), 0 states have call successors, (0), 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 102 [2021-12-06 23:09:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:10,350 INFO L225 Difference]: With dead ends: 1788 [2021-12-06 23:09:10,350 INFO L226 Difference]: Without dead ends: 1708 [2021-12-06 23:09:10,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=533, Invalid=5942, Unknown=5, NotChecked=0, Total=6480 [2021-12-06 23:09:10,350 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 104 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:10,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 761 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 633 Invalid, 0 Unknown, 140 Unchecked, 0.2s Time] [2021-12-06 23:09:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-12-06 23:09:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1705. [2021-12-06 23:09:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1703 states have (on average 1.1133294186729301) internal successors, (1896), 1704 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 1896 transitions. [2021-12-06 23:09:10,362 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 1896 transitions. Word has length 102 [2021-12-06 23:09:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:10,362 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 1896 transitions. [2021-12-06 23:09:10,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.88135593220339) internal successors, (288), 59 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:10,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 1896 transitions. [2021-12-06 23:09:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 23:09:10,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:10,363 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:10,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-12-06 23:09:10,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:10,564 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1943791869, now seen corresponding path program 3 times [2021-12-06 23:09:10,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:10,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515543938] [2021-12-06 23:09:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:10,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 7 proven. 215 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:09:11,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:11,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515543938] [2021-12-06 23:09:11,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515543938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:11,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791328280] [2021-12-06 23:09:11,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:09:11,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:11,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:11,385 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:11,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-06 23:09:11,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 23:09:11,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:11,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 23:09:11,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:11,796 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 14 treesize of output 10 [2021-12-06 23:09:12,349 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:09:12,349 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 18 treesize of output 10 [2021-12-06 23:09:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 31 proven. 144 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 23:09:12,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:12,670 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 13 [2021-12-06 23:09:12,671 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 26 treesize of output 22 [2021-12-06 23:09:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 31 proven. 144 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 23:09:12,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791328280] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:12,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:12,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 18, 18] total 56 [2021-12-06 23:09:12,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330081116] [2021-12-06 23:09:12,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:12,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 23:09:12,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 23:09:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2925, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 23:09:12,844 INFO L87 Difference]: Start difference. First operand 1705 states and 1896 transitions. Second operand has 56 states, 56 states have (on average 3.9464285714285716) internal successors, (221), 56 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:16,284 INFO L93 Difference]: Finished difference Result 2074 states and 2269 transitions. [2021-12-06 23:09:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-12-06 23:09:16,285 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.9464285714285716) internal successors, (221), 56 states have internal predecessors, (221), 0 states have call successors, (0), 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 103 [2021-12-06 23:09:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:16,286 INFO L225 Difference]: With dead ends: 2074 [2021-12-06 23:09:16,286 INFO L226 Difference]: Without dead ends: 2056 [2021-12-06 23:09:16,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 180 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 2032 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=645, Invalid=9657, Unknown=0, NotChecked=0, Total=10302 [2021-12-06 23:09:16,287 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 357 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 730 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:16,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3528 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3790 Invalid, 0 Unknown, 730 Unchecked, 1.4s Time] [2021-12-06 23:09:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-12-06 23:09:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1502. [2021-12-06 23:09:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1500 states have (on average 1.108) internal successors, (1662), 1501 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1662 transitions. [2021-12-06 23:09:16,299 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1662 transitions. Word has length 103 [2021-12-06 23:09:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:16,299 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 1662 transitions. [2021-12-06 23:09:16,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.9464285714285716) internal successors, (221), 56 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1662 transitions. [2021-12-06 23:09:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 23:09:16,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:16,300 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:16,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-12-06 23:09:16,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-12-06 23:09:16,501 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:16,502 INFO L85 PathProgramCache]: Analyzing trace with hash -257003894, now seen corresponding path program 11 times [2021-12-06 23:09:16,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:16,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136754294] [2021-12-06 23:09:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:16,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 209 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:09:16,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:16,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136754294] [2021-12-06 23:09:16,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136754294] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:16,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822116827] [2021-12-06 23:09:16,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:09:16,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:16,674 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:16,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-12-06 23:09:16,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 23:09:16,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-06 23:09:16,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:16,818 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:09:16,818 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:09:17,187 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 6 treesize of output 5 [2021-12-06 23:09:17,413 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:09:17,414 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 12 treesize of output 9 [2021-12-06 23:09:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 45 proven. 192 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:09:17,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:18,123 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 26 treesize of output 22 [2021-12-06 23:09:18,127 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:18,127 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 22 treesize of output 24 [2021-12-06 23:09:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 66 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:09:18,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822116827] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:18,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:18,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21, 21] total 55 [2021-12-06 23:09:18,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020993535] [2021-12-06 23:09:18,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:18,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 23:09:18,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:18,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 23:09:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=2787, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 23:09:18,605 INFO L87 Difference]: Start difference. First operand 1502 states and 1662 transitions. Second operand has 56 states, 55 states have (on average 5.636363636363637) internal successors, (310), 56 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:20,129 INFO L93 Difference]: Finished difference Result 2897 states and 3213 transitions. [2021-12-06 23:09:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 23:09:20,130 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 5.636363636363637) internal successors, (310), 56 states have internal predecessors, (310), 0 states have call successors, (0), 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 106 [2021-12-06 23:09:20,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:20,132 INFO L225 Difference]: With dead ends: 2897 [2021-12-06 23:09:20,132 INFO L226 Difference]: Without dead ends: 2897 [2021-12-06 23:09:20,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1161, Invalid=5319, Unknown=0, NotChecked=0, Total=6480 [2021-12-06 23:09:20,133 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 693 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:20,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 872 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:09:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-12-06 23:09:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1717. [2021-12-06 23:09:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1715 states have (on average 1.1084548104956269) internal successors, (1901), 1716 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 1901 transitions. [2021-12-06 23:09:20,148 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 1901 transitions. Word has length 106 [2021-12-06 23:09:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:20,148 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 1901 transitions. [2021-12-06 23:09:20,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 5.636363636363637) internal successors, (310), 56 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 1901 transitions. [2021-12-06 23:09:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 23:09:20,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:20,150 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:20,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-12-06 23:09:20,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-12-06 23:09:20,351 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1871804462, now seen corresponding path program 4 times [2021-12-06 23:09:20,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:20,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965350117] [2021-12-06 23:09:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:20,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 114 proven. 87 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:09:20,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:20,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965350117] [2021-12-06 23:09:20,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965350117] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:20,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78634892] [2021-12-06 23:09:20,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:09:20,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:20,538 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:20,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-06 23:09:20,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:09:20,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:20,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 23:09:20,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:20,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:20,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:09:20,657 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 10 treesize of output 8 [2021-12-06 23:09:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 116 proven. 85 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:09:21,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 115 proven. 86 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 23:09:21,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78634892] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:21,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:21,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2021-12-06 23:09:21,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738202262] [2021-12-06 23:09:21,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:21,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 23:09:21,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 23:09:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 23:09:21,320 INFO L87 Difference]: Start difference. First operand 1717 states and 1901 transitions. Second operand has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:21,657 INFO L93 Difference]: Finished difference Result 2907 states and 3184 transitions. [2021-12-06 23:09:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:09:21,657 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 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 107 [2021-12-06 23:09:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:21,661 INFO L225 Difference]: With dead ends: 2907 [2021-12-06 23:09:21,661 INFO L226 Difference]: Without dead ends: 2857 [2021-12-06 23:09:21,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=1954, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 23:09:21,661 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 239 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:21,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 320 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:09:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-12-06 23:09:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1914. [2021-12-06 23:09:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1912 states have (on average 1.1103556485355648) internal successors, (2123), 1913 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2123 transitions. [2021-12-06 23:09:21,680 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2123 transitions. Word has length 107 [2021-12-06 23:09:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:21,680 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 2123 transitions. [2021-12-06 23:09:21,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2123 transitions. [2021-12-06 23:09:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 23:09:21,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:21,682 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:21,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-12-06 23:09:21,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:21,882 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1448696733, now seen corresponding path program 12 times [2021-12-06 23:09:21,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850471870] [2021-12-06 23:09:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:21,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 114 proven. 85 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:09:22,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:22,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850471870] [2021-12-06 23:09:22,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850471870] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:22,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156694414] [2021-12-06 23:09:22,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:09:22,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:22,027 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:22,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-12-06 23:09:22,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 23:09:22,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:22,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 23:09:22,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:22,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:22,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:09:22,306 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 10 treesize of output 8 [2021-12-06 23:09:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 154 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:09:22,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 154 proven. 45 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:09:23,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156694414] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:23,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:23,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 17] total 45 [2021-12-06 23:09:23,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004720126] [2021-12-06 23:09:23,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:23,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-06 23:09:23,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:23,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-06 23:09:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1652, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 23:09:23,058 INFO L87 Difference]: Start difference. First operand 1914 states and 2123 transitions. Second operand has 45 states, 45 states have (on average 4.888888888888889) internal successors, (220), 45 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:24,502 INFO L93 Difference]: Finished difference Result 2572 states and 2810 transitions. [2021-12-06 23:09:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 23:09:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.888888888888889) internal successors, (220), 45 states have internal predecessors, (220), 0 states have call successors, (0), 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 107 [2021-12-06 23:09:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:24,504 INFO L225 Difference]: With dead ends: 2572 [2021-12-06 23:09:24,504 INFO L226 Difference]: Without dead ends: 2567 [2021-12-06 23:09:24,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1439, Invalid=6571, Unknown=0, NotChecked=0, Total=8010 [2021-12-06 23:09:24,505 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 1086 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:24,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 876 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:09:24,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-12-06 23:09:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1878. [2021-12-06 23:09:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1876 states have (on average 1.109275053304904) internal successors, (2081), 1877 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2081 transitions. [2021-12-06 23:09:24,521 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2081 transitions. Word has length 107 [2021-12-06 23:09:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:24,521 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 2081 transitions. [2021-12-06 23:09:24,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.888888888888889) internal successors, (220), 45 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2081 transitions. [2021-12-06 23:09:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 23:09:24,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:24,523 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:24,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-12-06 23:09:24,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:24,724 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1341408497, now seen corresponding path program 5 times [2021-12-06 23:09:24,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:24,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634792008] [2021-12-06 23:09:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:24,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 7 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:09:25,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:25,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634792008] [2021-12-06 23:09:25,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634792008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:25,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537762195] [2021-12-06 23:09:25,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:09:25,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:25,695 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:25,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-06 23:09:25,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 23:09:25,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:25,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 23:09:25,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:25,876 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:09:25,876 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:09:26,254 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 14 treesize of output 10 [2021-12-06 23:09:26,899 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:26,900 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 17 treesize of output 17 [2021-12-06 23:09:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 28 proven. 171 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 23:09:27,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:27,894 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 13 [2021-12-06 23:09:27,896 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 26 treesize of output 22 [2021-12-06 23:09:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 45 proven. 154 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-06 23:09:28,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537762195] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:28,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:28,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 20, 20] total 77 [2021-12-06 23:09:28,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025448254] [2021-12-06 23:09:28,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:28,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-12-06 23:09:28,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-12-06 23:09:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=5563, Unknown=0, NotChecked=0, Total=5852 [2021-12-06 23:09:28,570 INFO L87 Difference]: Start difference. First operand 1878 states and 2081 transitions. Second operand has 77 states, 77 states have (on average 3.675324675324675) internal successors, (283), 77 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:46,486 INFO L93 Difference]: Finished difference Result 5716 states and 6296 transitions. [2021-12-06 23:09:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-12-06 23:09:46,487 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.675324675324675) internal successors, (283), 77 states have internal predecessors, (283), 0 states have call successors, (0), 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 111 [2021-12-06 23:09:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:46,489 INFO L225 Difference]: With dead ends: 5716 [2021-12-06 23:09:46,490 INFO L226 Difference]: Without dead ends: 5716 [2021-12-06 23:09:46,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7968 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=4157, Invalid=34455, Unknown=0, NotChecked=0, Total=38612 [2021-12-06 23:09:46,491 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1559 mSDsluCounter, 5991 mSDsCounter, 0 mSdLazyCounter, 8075 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 14893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 8075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6708 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:46,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 6160 Invalid, 14893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 8075 Invalid, 0 Unknown, 6708 Unchecked, 3.3s Time] [2021-12-06 23:09:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2021-12-06 23:09:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 2031. [2021-12-06 23:09:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2029 states have (on average 1.110399211434204) internal successors, (2253), 2030 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2253 transitions. [2021-12-06 23:09:46,514 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2253 transitions. Word has length 111 [2021-12-06 23:09:46,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:46,514 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 2253 transitions. [2021-12-06 23:09:46,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.675324675324675) internal successors, (283), 77 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2253 transitions. [2021-12-06 23:09:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 23:09:46,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:46,516 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:46,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-12-06 23:09:46,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-12-06 23:09:46,717 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash 918300768, now seen corresponding path program 13 times [2021-12-06 23:09:46,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:46,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075925986] [2021-12-06 23:09:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:46,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 31 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:09:47,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:47,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075925986] [2021-12-06 23:09:47,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075925986] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:47,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218278714] [2021-12-06 23:09:47,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:09:47,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:47,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:47,711 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:47,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-12-06 23:09:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:47,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 23:09:47,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:48,093 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 14 treesize of output 10 [2021-12-06 23:09:48,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:09:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 31 proven. 189 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:09:48,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:48,481 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 13 [2021-12-06 23:09:48,482 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 26 treesize of output 22 [2021-12-06 23:09:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 31 proven. 189 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:09:48,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218278714] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:48,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:48,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 22, 22] total 49 [2021-12-06 23:09:48,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042292343] [2021-12-06 23:09:48,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:48,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 23:09:48,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 23:09:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2214, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 23:09:48,664 INFO L87 Difference]: Start difference. First operand 2031 states and 2253 transitions. Second operand has 49 states, 49 states have (on average 3.489795918367347) internal successors, (171), 49 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:54,646 INFO L93 Difference]: Finished difference Result 5573 states and 6102 transitions. [2021-12-06 23:09:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-12-06 23:09:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.489795918367347) internal successors, (171), 49 states have internal predecessors, (171), 0 states have call successors, (0), 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 111 [2021-12-06 23:09:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:54,649 INFO L225 Difference]: With dead ends: 5573 [2021-12-06 23:09:54,649 INFO L226 Difference]: Without dead ends: 5531 [2021-12-06 23:09:54,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 203 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1066, Invalid=12976, Unknown=0, NotChecked=0, Total=14042 [2021-12-06 23:09:54,653 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 2308 mSDsluCounter, 5737 mSDsCounter, 0 mSdLazyCounter, 6234 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 5951 SdHoareTripleChecker+Invalid, 7039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 6234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 596 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:54,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2308 Valid, 5951 Invalid, 7039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 6234 Invalid, 0 Unknown, 596 Unchecked, 2.3s Time] [2021-12-06 23:09:54,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2021-12-06 23:09:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 2691. [2021-12-06 23:09:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2689 states have (on average 1.1108218668650056) internal successors, (2987), 2690 states have internal predecessors, (2987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 2987 transitions. [2021-12-06 23:09:54,679 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 2987 transitions. Word has length 111 [2021-12-06 23:09:54,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:54,679 INFO L470 AbstractCegarLoop]: Abstraction has 2691 states and 2987 transitions. [2021-12-06 23:09:54,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.489795918367347) internal successors, (171), 49 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:54,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 2987 transitions. [2021-12-06 23:09:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 23:09:54,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:54,681 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:54,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-12-06 23:09:54,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:54,882 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:54,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:54,883 INFO L85 PathProgramCache]: Analyzing trace with hash 406677484, now seen corresponding path program 1 times [2021-12-06 23:09:54,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:54,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339172730] [2021-12-06 23:09:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:54,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 58 proven. 193 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:09:55,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:55,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339172730] [2021-12-06 23:09:55,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339172730] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:55,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961910942] [2021-12-06 23:09:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:55,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:55,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:55,106 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:55,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-12-06 23:09:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:55,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 23:09:55,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:55,238 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 10 treesize of output 8 [2021-12-06 23:09:55,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:09:55,454 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 17 treesize of output 19 [2021-12-06 23:09:55,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:09:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 58 proven. 200 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:09:55,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:55,769 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2448 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2448) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 5)) 0)) is different from false [2021-12-06 23:09:55,774 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:55,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:09:55,777 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:55,778 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 37 treesize of output 37 [2021-12-06 23:09:55,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:09:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 58 proven. 193 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:09:55,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961910942] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:55,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:55,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 35 [2021-12-06 23:09:55,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995662036] [2021-12-06 23:09:55,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:55,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 23:09:55,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:55,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 23:09:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1024, Unknown=1, NotChecked=64, Total=1190 [2021-12-06 23:09:55,954 INFO L87 Difference]: Start difference. First operand 2691 states and 2987 transitions. Second operand has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:56,652 INFO L93 Difference]: Finished difference Result 3015 states and 3329 transitions. [2021-12-06 23:09:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:09:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 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 113 [2021-12-06 23:09:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:56,653 INFO L225 Difference]: With dead ends: 3015 [2021-12-06 23:09:56,653 INFO L226 Difference]: Without dead ends: 2196 [2021-12-06 23:09:56,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 207 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=2155, Unknown=1, NotChecked=94, Total=2450 [2021-12-06 23:09:56,654 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 128 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:56,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 929 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1311 Invalid, 0 Unknown, 115 Unchecked, 0.4s Time] [2021-12-06 23:09:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-12-06 23:09:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2196. [2021-12-06 23:09:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2194 states have (on average 1.113947128532361) internal successors, (2444), 2195 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2444 transitions. [2021-12-06 23:09:56,668 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2444 transitions. Word has length 113 [2021-12-06 23:09:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:56,668 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 2444 transitions. [2021-12-06 23:09:56,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2444 transitions. [2021-12-06 23:09:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 23:09:56,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:56,669 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:56,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-12-06 23:09:56,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:56,870 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:56,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1613237987, now seen corresponding path program 14 times [2021-12-06 23:09:56,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:56,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818626950] [2021-12-06 23:09:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:56,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 45 proven. 200 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:09:57,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:57,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818626950] [2021-12-06 23:09:57,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818626950] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:09:57,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391282176] [2021-12-06 23:09:57,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:09:57,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:57,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:57,083 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:57,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-12-06 23:09:57,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:09:57,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:57,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-06 23:09:57,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 66 proven. 179 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:09:57,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:57,833 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 5 treesize of output 3 [2021-12-06 23:09:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 66 proven. 179 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 23:09:57,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391282176] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:57,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:57,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 42 [2021-12-06 23:09:57,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794100162] [2021-12-06 23:09:57,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:57,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 23:09:57,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:57,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 23:09:57,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 23:09:57,883 INFO L87 Difference]: Start difference. First operand 2196 states and 2444 transitions. Second operand has 43 states, 42 states have (on average 4.690476190476191) internal successors, (197), 43 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:59,372 INFO L93 Difference]: Finished difference Result 2846 states and 3149 transitions. [2021-12-06 23:09:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:09:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.690476190476191) internal successors, (197), 43 states have internal predecessors, (197), 0 states have call successors, (0), 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 115 [2021-12-06 23:09:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:59,374 INFO L225 Difference]: With dead ends: 2846 [2021-12-06 23:09:59,374 INFO L226 Difference]: Without dead ends: 2846 [2021-12-06 23:09:59,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 204 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=813, Invalid=3477, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 23:09:59,374 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 894 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:59,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 1495 Invalid, 3024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2945 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 23:09:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-12-06 23:09:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2572. [2021-12-06 23:09:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 2570 states have (on average 1.1190661478599222) internal successors, (2876), 2571 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 2876 transitions. [2021-12-06 23:09:59,393 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 2876 transitions. Word has length 115 [2021-12-06 23:09:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:59,393 INFO L470 AbstractCegarLoop]: Abstraction has 2572 states and 2876 transitions. [2021-12-06 23:09:59,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.690476190476191) internal successors, (197), 43 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 2876 transitions. [2021-12-06 23:09:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 23:09:59,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:59,395 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:59,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-12-06 23:09:59,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-12-06 23:09:59,596 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:09:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash 16289344, now seen corresponding path program 12 times [2021-12-06 23:09:59,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493553475] [2021-12-06 23:09:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:59,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 61 proven. 243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:10:00,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:00,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493553475] [2021-12-06 23:10:00,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493553475] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:00,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055746085] [2021-12-06 23:10:00,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:10:00,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:00,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:00,063 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:00,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-12-06 23:10:00,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 23:10:00,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:10:00,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-06 23:10:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:00,297 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 10 treesize of output 8 [2021-12-06 23:10:00,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:10:00,584 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 17 treesize of output 19 [2021-12-06 23:10:00,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:10:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 61 proven. 243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:10:00,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:10:00,958 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2569 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2569) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 6)) 0)) is different from false [2021-12-06 23:10:00,961 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:10:00,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:10:00,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:10:00,965 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 37 treesize of output 37 [2021-12-06 23:10:00,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:10:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 61 proven. 243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:10:01,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055746085] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:10:01,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:10:01,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 42 [2021-12-06 23:10:01,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788259023] [2021-12-06 23:10:01,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:01,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-06 23:10:01,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:01,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-06 23:10:01,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1539, Unknown=1, NotChecked=78, Total=1722 [2021-12-06 23:10:01,180 INFO L87 Difference]: Start difference. First operand 2572 states and 2876 transitions. Second operand has 42 states, 42 states have (on average 4.333333333333333) internal successors, (182), 42 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:02,307 INFO L93 Difference]: Finished difference Result 3762 states and 4179 transitions. [2021-12-06 23:10:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:10:02,308 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.333333333333333) internal successors, (182), 42 states have internal predecessors, (182), 0 states have call successors, (0), 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 117 [2021-12-06 23:10:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:02,309 INFO L225 Difference]: With dead ends: 3762 [2021-12-06 23:10:02,309 INFO L226 Difference]: Without dead ends: 2933 [2021-12-06 23:10:02,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=208, Invalid=3101, Unknown=1, NotChecked=112, Total=3422 [2021-12-06 23:10:02,310 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 126 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:02,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1530 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2078 Invalid, 0 Unknown, 177 Unchecked, 0.6s Time] [2021-12-06 23:10:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2021-12-06 23:10:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 2874. [2021-12-06 23:10:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2872 states have (on average 1.1204735376044568) internal successors, (3218), 2873 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 3218 transitions. [2021-12-06 23:10:02,328 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 3218 transitions. Word has length 117 [2021-12-06 23:10:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:02,328 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 3218 transitions. [2021-12-06 23:10:02,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.333333333333333) internal successors, (182), 42 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 3218 transitions. [2021-12-06 23:10:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 23:10:02,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:02,330 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:02,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-12-06 23:10:02,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-12-06 23:10:02,531 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:10:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1449792905, now seen corresponding path program 6 times [2021-12-06 23:10:02,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:02,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228126050] [2021-12-06 23:10:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:02,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 8 proven. 302 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:10:03,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:03,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228126050] [2021-12-06 23:10:03,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228126050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:03,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877673068] [2021-12-06 23:10:03,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:10:03,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:03,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:03,473 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:03,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-12-06 23:10:03,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 23:10:03,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:10:03,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-06 23:10:03,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:03,723 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:10:03,723 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:10:04,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:10:13,107 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:10:13,107 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 18 treesize of output 18 [2021-12-06 23:10:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 96 proven. 138 refuted. 8 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-06 23:10:13,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:10:14,139 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 13 treesize of output 11 [2021-12-06 23:10:14,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:10:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 104 proven. 138 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-06 23:10:14,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877673068] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:10:14,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:10:14,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 21, 21] total 73 [2021-12-06 23:10:14,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764823838] [2021-12-06 23:10:14,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:14,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-06 23:10:14,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-06 23:10:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=4936, Unknown=2, NotChecked=0, Total=5256 [2021-12-06 23:10:14,870 INFO L87 Difference]: Start difference. First operand 2874 states and 3218 transitions. Second operand has 73 states, 73 states have (on average 3.8493150684931505) internal successors, (281), 73 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:52,197 INFO L93 Difference]: Finished difference Result 3288 states and 3626 transitions. [2021-12-06 23:10:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-06 23:10:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.8493150684931505) internal successors, (281), 73 states have internal predecessors, (281), 0 states have call successors, (0), 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 118 [2021-12-06 23:10:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:52,198 INFO L225 Difference]: With dead ends: 3288 [2021-12-06 23:10:52,198 INFO L226 Difference]: Without dead ends: 2751 [2021-12-06 23:10:52,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3530 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=1316, Invalid=15709, Unknown=5, NotChecked=0, Total=17030 [2021-12-06 23:10:52,199 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 376 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 449 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:52,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 2510 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1495 Invalid, 0 Unknown, 449 Unchecked, 0.7s Time] [2021-12-06 23:10:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-12-06 23:10:52,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2442. [2021-12-06 23:10:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2440 states have (on average 1.1147540983606556) internal successors, (2720), 2441 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 2720 transitions. [2021-12-06 23:10:52,216 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 2720 transitions. Word has length 118 [2021-12-06 23:10:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:52,216 INFO L470 AbstractCegarLoop]: Abstraction has 2442 states and 2720 transitions. [2021-12-06 23:10:52,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.8493150684931505) internal successors, (281), 73 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 2720 transitions. [2021-12-06 23:10:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 23:10:52,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:52,218 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:52,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-12-06 23:10:52,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:52,419 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:10:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash -142572733, now seen corresponding path program 13 times [2021-12-06 23:10:52,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:52,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125521136] [2021-12-06 23:10:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:52,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 45 proven. 284 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:10:52,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:52,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125521136] [2021-12-06 23:10:52,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125521136] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:52,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858394072] [2021-12-06 23:10:52,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:10:52,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:52,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:52,611 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:52,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-12-06 23:10:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:52,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 23:10:52,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:52,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:52,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:10:52,753 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 10 treesize of output 8 [2021-12-06 23:10:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 66 proven. 263 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:10:53,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:10:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 91 proven. 238 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:10:54,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858394072] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:10:54,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:10:54,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 51 [2021-12-06 23:10:54,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653253448] [2021-12-06 23:10:54,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:54,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 23:10:54,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 23:10:54,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2367, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 23:10:54,015 INFO L87 Difference]: Start difference. First operand 2442 states and 2720 transitions. Second operand has 52 states, 51 states have (on average 6.784313725490196) internal successors, (346), 52 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) [2021-12-06 23:10:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:54,861 INFO L93 Difference]: Finished difference Result 3015 states and 3348 transitions. [2021-12-06 23:10:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:10:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 6.784313725490196) internal successors, (346), 52 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) Word has length 121 [2021-12-06 23:10:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:54,864 INFO L225 Difference]: With dead ends: 3015 [2021-12-06 23:10:54,864 INFO L226 Difference]: Without dead ends: 3015 [2021-12-06 23:10:54,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=821, Invalid=4009, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 23:10:54,864 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 634 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:54,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 967 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:10:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2021-12-06 23:10:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2728. [2021-12-06 23:10:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 2726 states have (on average 1.1144534115920763) internal successors, (3038), 2727 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 3038 transitions. [2021-12-06 23:10:54,882 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 3038 transitions. Word has length 121 [2021-12-06 23:10:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:54,882 INFO L470 AbstractCegarLoop]: Abstraction has 2728 states and 3038 transitions. [2021-12-06 23:10:54,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 6.784313725490196) internal successors, (346), 52 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) [2021-12-06 23:10:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 3038 transitions. [2021-12-06 23:10:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 23:10:54,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:54,884 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:54,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-12-06 23:10:55,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-12-06 23:10:55,085 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:10:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1231743075, now seen corresponding path program 15 times [2021-12-06 23:10:55,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:55,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576250942] [2021-12-06 23:10:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:55,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 157 proven. 113 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:10:55,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:55,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576250942] [2021-12-06 23:10:55,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576250942] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:55,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548580561] [2021-12-06 23:10:55,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:10:55,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:55,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:55,286 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:55,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-12-06 23:10:55,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 23:10:55,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:10:55,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-06 23:10:55,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:55,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:55,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:10:55,629 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 10 treesize of output 8 [2021-12-06 23:10:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 204 proven. 66 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:10:56,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:10:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 204 proven. 66 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:10:56,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548580561] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:10:56,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:10:56,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 47 [2021-12-06 23:10:56,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872363782] [2021-12-06 23:10:56,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:56,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-06 23:10:56,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-06 23:10:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1793, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 23:10:56,575 INFO L87 Difference]: Start difference. First operand 2728 states and 3038 transitions. Second operand has 47 states, 47 states have (on average 4.957446808510638) internal successors, (233), 47 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:57,330 INFO L93 Difference]: Finished difference Result 2833 states and 3126 transitions. [2021-12-06 23:10:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 23:10:57,331 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.957446808510638) internal successors, (233), 47 states have internal predecessors, (233), 0 states have call successors, (0), 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 122 [2021-12-06 23:10:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:57,333 INFO L225 Difference]: With dead ends: 2833 [2021-12-06 23:10:57,333 INFO L226 Difference]: Without dead ends: 2334 [2021-12-06 23:10:57,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=960, Invalid=3330, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 23:10:57,333 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 324 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:57,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 671 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:10:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2021-12-06 23:10:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2331. [2021-12-06 23:10:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2329 states have (on average 1.1133533705452985) internal successors, (2593), 2330 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 2593 transitions. [2021-12-06 23:10:57,347 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 2593 transitions. Word has length 122 [2021-12-06 23:10:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:57,347 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 2593 transitions. [2021-12-06 23:10:57,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.957446808510638) internal successors, (233), 47 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:57,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 2593 transitions. [2021-12-06 23:10:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 23:10:57,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:57,349 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:57,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-12-06 23:10:57,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:57,550 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:10:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:57,550 INFO L85 PathProgramCache]: Analyzing trace with hash -723727238, now seen corresponding path program 16 times [2021-12-06 23:10:57,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:57,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787480371] [2021-12-06 23:10:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:57,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 36 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:10:58,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:58,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787480371] [2021-12-06 23:10:58,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787480371] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:58,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800909036] [2021-12-06 23:10:58,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:10:58,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:58,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:58,729 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:58,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-12-06 23:10:58,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:10:58,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:10:58,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 23:10:58,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:58,867 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:10:58,867 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:10:59,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:11:00,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:11:00,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 23:11:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 190 proven. 105 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:00,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:01,322 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 13 treesize of output 11 [2021-12-06 23:11:01,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:11:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 177 proven. 118 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:02,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800909036] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:02,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:02,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 25, 25] total 77 [2021-12-06 23:11:02,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755350521] [2021-12-06 23:11:02,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:02,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-12-06 23:11:02,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-12-06 23:11:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=5453, Unknown=0, NotChecked=0, Total=5852 [2021-12-06 23:11:02,407 INFO L87 Difference]: Start difference. First operand 2331 states and 2593 transitions. Second operand has 77 states, 77 states have (on average 4.0) internal successors, (308), 77 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) [2021-12-06 23:11:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:08,580 INFO L93 Difference]: Finished difference Result 2543 states and 2828 transitions. [2021-12-06 23:11:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-12-06 23:11:08,581 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.0) internal successors, (308), 77 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) Word has length 126 [2021-12-06 23:11:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:08,582 INFO L225 Difference]: With dead ends: 2543 [2021-12-06 23:11:08,582 INFO L226 Difference]: Without dead ends: 2539 [2021-12-06 23:11:08,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1681, Invalid=16951, Unknown=0, NotChecked=0, Total=18632 [2021-12-06 23:11:08,583 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 431 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:08,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 2780 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2218 Invalid, 0 Unknown, 450 Unchecked, 1.0s Time] [2021-12-06 23:11:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-06 23:11:08,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2389. [2021-12-06 23:11:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 2387 states have (on average 1.1135316296606619) internal successors, (2658), 2388 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 2658 transitions. [2021-12-06 23:11:08,598 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 2658 transitions. Word has length 126 [2021-12-06 23:11:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:08,598 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 2658 transitions. [2021-12-06 23:11:08,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.0) internal successors, (308), 77 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) [2021-12-06 23:11:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 2658 transitions. [2021-12-06 23:11:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-06 23:11:08,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:08,600 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:08,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-12-06 23:11:08,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:08,801 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:08,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 775753623, now seen corresponding path program 17 times [2021-12-06 23:11:08,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:08,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216803326] [2021-12-06 23:11:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:08,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 66 proven. 258 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:09,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216803326] [2021-12-06 23:11:09,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216803326] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:09,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567397927] [2021-12-06 23:11:09,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:11:09,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:09,075 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:09,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-12-06 23:11:09,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-06 23:11:09,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:09,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 23:11:09,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:09,526 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:11:09,527 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:11:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 91 proven. 233 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:10,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 120 proven. 204 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:11,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567397927] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:11,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:11,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 57 [2021-12-06 23:11:11,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050075618] [2021-12-06 23:11:11,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:11,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 23:11:11,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 23:11:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=2887, Unknown=0, NotChecked=0, Total=3306 [2021-12-06 23:11:11,058 INFO L87 Difference]: Start difference. First operand 2389 states and 2658 transitions. Second operand has 58 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 58 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:12,736 INFO L93 Difference]: Finished difference Result 3220 states and 3560 transitions. [2021-12-06 23:11:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 23:11:12,737 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 58 states have internal predecessors, (289), 0 states have call successors, (0), 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 130 [2021-12-06 23:11:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:12,738 INFO L225 Difference]: With dead ends: 3220 [2021-12-06 23:11:12,738 INFO L226 Difference]: Without dead ends: 3220 [2021-12-06 23:11:12,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1367, Invalid=5439, Unknown=0, NotChecked=0, Total=6806 [2021-12-06 23:11:12,739 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 656 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:12,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1583 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:11:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2021-12-06 23:11:12,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2875. [2021-12-06 23:11:12,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2873 states have (on average 1.1193873999303863) internal successors, (3216), 2874 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 3216 transitions. [2021-12-06 23:11:12,756 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 3216 transitions. Word has length 130 [2021-12-06 23:11:12,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:12,756 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 3216 transitions. [2021-12-06 23:11:12,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 58 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 3216 transitions. [2021-12-06 23:11:12,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 23:11:12,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:12,758 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:12,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-12-06 23:11:12,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2021-12-06 23:11:12,960 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1395817447, now seen corresponding path program 14 times [2021-12-06 23:11:12,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:12,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405484891] [2021-12-06 23:11:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:12,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 71 proven. 336 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:11:13,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405484891] [2021-12-06 23:11:13,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405484891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852923650] [2021-12-06 23:11:13,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:11:13,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:13,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:13,458 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:13,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-12-06 23:11:13,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:11:13,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:13,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-06 23:11:13,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:13,610 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 10 treesize of output 8 [2021-12-06 23:11:13,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:11:14,032 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 17 treesize of output 19 [2021-12-06 23:11:14,432 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:14,432 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 15 treesize of output 10 [2021-12-06 23:11:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 71 proven. 336 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:11:14,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:14,613 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2974 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_2974) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 7)) 0)) is different from false [2021-12-06 23:11:14,617 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:14,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:11:14,621 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:14,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-12-06 23:11:14,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:11:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 71 proven. 336 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:11:15,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852923650] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:15,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:15,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 23] total 60 [2021-12-06 23:11:15,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633574065] [2021-12-06 23:11:15,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:15,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-12-06 23:11:15,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-12-06 23:11:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3257, Unknown=1, NotChecked=114, Total=3540 [2021-12-06 23:11:15,029 INFO L87 Difference]: Start difference. First operand 2875 states and 3216 transitions. Second operand has 60 states, 60 states have (on average 4.983333333333333) internal successors, (299), 60 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) [2021-12-06 23:11:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:16,176 INFO L93 Difference]: Finished difference Result 5383 states and 6000 transitions. [2021-12-06 23:11:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 23:11:16,176 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.983333333333333) internal successors, (299), 60 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) Word has length 132 [2021-12-06 23:11:16,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:16,179 INFO L225 Difference]: With dead ends: 5383 [2021-12-06 23:11:16,179 INFO L226 Difference]: Without dead ends: 4421 [2021-12-06 23:11:16,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=240, Invalid=4455, Unknown=1, NotChecked=134, Total=4830 [2021-12-06 23:11:16,179 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 133 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:16,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 2158 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2946 Invalid, 0 Unknown, 139 Unchecked, 0.9s Time] [2021-12-06 23:11:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2021-12-06 23:11:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4304. [2021-12-06 23:11:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4302 states have (on average 1.1227336122733613) internal successors, (4830), 4303 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 4830 transitions. [2021-12-06 23:11:16,212 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 4830 transitions. Word has length 132 [2021-12-06 23:11:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:16,212 INFO L470 AbstractCegarLoop]: Abstraction has 4304 states and 4830 transitions. [2021-12-06 23:11:16,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.983333333333333) internal successors, (299), 60 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) [2021-12-06 23:11:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 4830 transitions. [2021-12-06 23:11:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 23:11:16,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:16,215 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:16,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-12-06 23:11:16,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:16,416 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1681188017, now seen corresponding path program 7 times [2021-12-06 23:11:16,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:16,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792987137] [2021-12-06 23:11:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:16,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 9 proven. 404 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:11:17,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:17,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792987137] [2021-12-06 23:11:17,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792987137] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:17,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261588612] [2021-12-06 23:11:17,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:11:17,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:17,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:17,335 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:17,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-12-06 23:11:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:17,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 23:11:17,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:17,782 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 14 treesize of output 10 [2021-12-06 23:11:18,620 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:11:18,620 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 18 treesize of output 10 [2021-12-06 23:11:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 41 proven. 279 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 23:11:18,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:19,141 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 13 [2021-12-06 23:11:19,143 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 26 treesize of output 22 [2021-12-06 23:11:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 41 proven. 279 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 23:11:19,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261588612] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:19,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:19,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 67 [2021-12-06 23:11:19,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128791828] [2021-12-06 23:11:19,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:19,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-12-06 23:11:19,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-12-06 23:11:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=4250, Unknown=0, NotChecked=0, Total=4422 [2021-12-06 23:11:19,349 INFO L87 Difference]: Start difference. First operand 4304 states and 4830 transitions. Second operand has 67 states, 67 states have (on average 4.2835820895522385) internal successors, (287), 67 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) [2021-12-06 23:11:24,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:24,176 INFO L93 Difference]: Finished difference Result 4366 states and 4849 transitions. [2021-12-06 23:11:24,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-12-06 23:11:24,177 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.2835820895522385) internal successors, (287), 67 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) Word has length 133 [2021-12-06 23:11:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:24,179 INFO L225 Difference]: With dead ends: 4366 [2021-12-06 23:11:24,179 INFO L226 Difference]: Without dead ends: 3745 [2021-12-06 23:11:24,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 9 DeprecatedPredicates, 3438 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=781, Invalid=15989, Unknown=0, NotChecked=0, Total=16770 [2021-12-06 23:11:24,179 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 312 mSDsluCounter, 5657 mSDsCounter, 0 mSdLazyCounter, 3847 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 5805 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 897 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:24,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 5805 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3847 Invalid, 0 Unknown, 897 Unchecked, 1.3s Time] [2021-12-06 23:11:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2021-12-06 23:11:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3372. [2021-12-06 23:11:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 3370 states have (on average 1.1189910979228486) internal successors, (3771), 3371 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 3771 transitions. [2021-12-06 23:11:24,201 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 3771 transitions. Word has length 133 [2021-12-06 23:11:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:24,201 INFO L470 AbstractCegarLoop]: Abstraction has 3372 states and 3771 transitions. [2021-12-06 23:11:24,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.2835820895522385) internal successors, (287), 67 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) [2021-12-06 23:11:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 3771 transitions. [2021-12-06 23:11:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 23:11:24,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:24,203 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:24,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-12-06 23:11:24,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:24,404 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:24,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash -606633852, now seen corresponding path program 15 times [2021-12-06 23:11:24,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:24,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152844892] [2021-12-06 23:11:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:24,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 66 proven. 370 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:11:24,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:24,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152844892] [2021-12-06 23:11:24,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152844892] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:24,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079724609] [2021-12-06 23:11:24,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:11:24,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:24,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:24,658 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:24,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-12-06 23:11:24,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 23:11:24,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:24,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 23:11:24,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 91 proven. 345 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:11:25,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:25,939 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 15 treesize of output 11 [2021-12-06 23:11:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 120 proven. 316 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:11:26,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079724609] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:26,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:26,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 53 [2021-12-06 23:11:26,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060623445] [2021-12-06 23:11:26,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:26,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-06 23:11:26,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:26,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-06 23:11:26,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=2472, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 23:11:26,303 INFO L87 Difference]: Start difference. First operand 3372 states and 3771 transitions. Second operand has 54 states, 53 states have (on average 6.849056603773585) internal successors, (363), 54 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:27,431 INFO L93 Difference]: Finished difference Result 4184 states and 4641 transitions. [2021-12-06 23:11:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:11:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 6.849056603773585) internal successors, (363), 54 states have internal predecessors, (363), 0 states have call successors, (0), 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 136 [2021-12-06 23:11:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:27,433 INFO L225 Difference]: With dead ends: 4184 [2021-12-06 23:11:27,434 INFO L226 Difference]: Without dead ends: 4184 [2021-12-06 23:11:27,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1177, Invalid=4373, Unknown=0, NotChecked=0, Total=5550 [2021-12-06 23:11:27,434 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 1515 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:27,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 673 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 23:11:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2021-12-06 23:11:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 3672. [2021-12-06 23:11:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3670 states have (on average 1.1185286103542234) internal successors, (4105), 3671 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4105 transitions. [2021-12-06 23:11:27,460 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4105 transitions. Word has length 136 [2021-12-06 23:11:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:27,460 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 4105 transitions. [2021-12-06 23:11:27,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 6.849056603773585) internal successors, (363), 54 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4105 transitions. [2021-12-06 23:11:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 23:11:27,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:27,462 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:27,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-12-06 23:11:27,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:27,663 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:27,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1565650746, now seen corresponding path program 8 times [2021-12-06 23:11:27,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:27,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635421739] [2021-12-06 23:11:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:27,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 207 proven. 147 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:27,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635421739] [2021-12-06 23:11:27,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635421739] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919229414] [2021-12-06 23:11:27,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:11:27,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:27,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:27,911 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:27,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-12-06 23:11:28,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:11:28,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:28,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 23:11:28,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:28,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:11:28,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:11:28,068 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 10 treesize of output 8 [2021-12-06 23:11:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 209 proven. 145 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:28,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 208 proven. 146 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:29,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919229414] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:29,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:29,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2021-12-06 23:11:29,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953802417] [2021-12-06 23:11:29,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:29,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-06 23:11:29,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-06 23:11:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2130, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 23:11:29,013 INFO L87 Difference]: Start difference. First operand 3672 states and 4105 transitions. Second operand has 51 states, 51 states have (on average 5.098039215686274) internal successors, (260), 51 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) [2021-12-06 23:11:29,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:29,449 INFO L93 Difference]: Finished difference Result 3895 states and 4289 transitions. [2021-12-06 23:11:29,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:11:29,449 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.098039215686274) internal successors, (260), 51 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) Word has length 137 [2021-12-06 23:11:29,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:29,451 INFO L225 Difference]: With dead ends: 3895 [2021-12-06 23:11:29,451 INFO L226 Difference]: Without dead ends: 2905 [2021-12-06 23:11:29,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=752, Invalid=3030, Unknown=0, NotChecked=0, Total=3782 [2021-12-06 23:11:29,451 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 232 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:29,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:11:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2021-12-06 23:11:29,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2901. [2021-12-06 23:11:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2899 states have (on average 1.111417730251811) internal successors, (3222), 2900 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 3222 transitions. [2021-12-06 23:11:29,468 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 3222 transitions. Word has length 137 [2021-12-06 23:11:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:29,469 INFO L470 AbstractCegarLoop]: Abstraction has 2901 states and 3222 transitions. [2021-12-06 23:11:29,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.098039215686274) internal successors, (260), 51 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) [2021-12-06 23:11:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 3222 transitions. [2021-12-06 23:11:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 23:11:29,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:29,471 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:29,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-12-06 23:11:29,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:29,671 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash -516709271, now seen corresponding path program 18 times [2021-12-06 23:11:29,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:29,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329794721] [2021-12-06 23:11:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:29,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 207 proven. 145 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:11:29,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:29,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329794721] [2021-12-06 23:11:29,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329794721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:29,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873683856] [2021-12-06 23:11:29,888 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:11:29,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:29,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:29,888 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:29,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-12-06 23:11:30,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-12-06 23:11:30,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:30,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-06 23:11:30,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:30,620 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 10 treesize of output 8 [2021-12-06 23:11:31,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:11:31,249 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 17 treesize of output 19 [2021-12-06 23:11:32,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:11:32,117 INFO L354 Elim1Store]: treesize reduction 15, result has 50.0 percent of original size [2021-12-06 23:11:32,118 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 32 treesize of output 28 [2021-12-06 23:11:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 64 proven. 406 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:11:32,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:33,158 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3261 (Array Int Int)) (|ULTIMATE.start_substring_~pt~0#1.base| Int) (|ULTIMATE.start_substring_~pt~0#1.offset| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_3261))) (let ((.cse0 (select (select .cse1 |ULTIMATE.start_substring_~pt~0#1.base|) |ULTIMATE.start_substring_~pt~0#1.offset|))) (or (not (= .cse0 (select (select .cse1 |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 7)))) (= .cse0 0))))) is different from false [2021-12-06 23:11:33,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:33,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 42 [2021-12-06 23:11:33,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:33,176 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 111 treesize of output 120 [2021-12-06 23:11:33,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:33,184 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 68 treesize of output 64 [2021-12-06 23:11:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 64 proven. 287 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-06 23:11:33,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873683856] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:33,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:33,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 36, 29] total 81 [2021-12-06 23:11:33,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189219757] [2021-12-06 23:11:33,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:33,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-12-06 23:11:33,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-12-06 23:11:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=6031, Unknown=1, NotChecked=156, Total=6480 [2021-12-06 23:11:33,980 INFO L87 Difference]: Start difference. First operand 2901 states and 3222 transitions. Second operand has 81 states, 81 states have (on average 4.135802469135802) internal successors, (335), 81 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:35,890 INFO L93 Difference]: Finished difference Result 2896 states and 3215 transitions. [2021-12-06 23:11:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 23:11:35,890 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.135802469135802) internal successors, (335), 81 states have internal predecessors, (335), 0 states have call successors, (0), 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 137 [2021-12-06 23:11:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:35,892 INFO L225 Difference]: With dead ends: 2896 [2021-12-06 23:11:35,892 INFO L226 Difference]: Without dead ends: 2801 [2021-12-06 23:11:35,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3145 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=711, Invalid=13572, Unknown=1, NotChecked=236, Total=14520 [2021-12-06 23:11:35,892 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 177 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 886 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:35,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 1999 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1498 Invalid, 0 Unknown, 886 Unchecked, 0.4s Time] [2021-12-06 23:11:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2021-12-06 23:11:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2798. [2021-12-06 23:11:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2796 states have (on average 1.1144492131616595) internal successors, (3116), 2797 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3116 transitions. [2021-12-06 23:11:35,909 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3116 transitions. Word has length 137 [2021-12-06 23:11:35,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:35,909 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 3116 transitions. [2021-12-06 23:11:35,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.135802469135802) internal successors, (335), 81 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:35,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3116 transitions. [2021-12-06 23:11:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 23:11:35,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:35,912 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:35,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-12-06 23:11:36,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:36,113 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1394099389, now seen corresponding path program 9 times [2021-12-06 23:11:36,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:36,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885318998] [2021-12-06 23:11:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:36,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 9 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:11:37,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:37,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885318998] [2021-12-06 23:11:37,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885318998] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:37,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502969095] [2021-12-06 23:11:37,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:11:37,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:37,788 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:37,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-12-06 23:11:38,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-06 23:11:38,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:38,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 112 conjunts are in the unsatisfiable core [2021-12-06 23:11:38,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:38,278 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 10 treesize of output 8 [2021-12-06 23:11:39,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:11:39,351 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 17 treesize of output 19 [2021-12-06 23:11:40,198 INFO L354 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2021-12-06 23:11:40,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-12-06 23:11:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 9 proven. 464 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:11:40,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:40,521 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3343 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_3343) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 8)) 0)) is different from false [2021-12-06 23:11:40,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:40,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:11:40,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:11:40,528 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 37 treesize of output 37 [2021-12-06 23:11:40,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:11:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 9 proven. 374 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 23:11:41,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502969095] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:41,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:41,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 37, 31] total 94 [2021-12-06 23:11:41,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719702247] [2021-12-06 23:11:41,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:41,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-06 23:11:41,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-06 23:11:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=8249, Unknown=1, NotChecked=182, Total=8742 [2021-12-06 23:11:41,299 INFO L87 Difference]: Start difference. First operand 2798 states and 3116 transitions. Second operand has 94 states, 94 states have (on average 3.521276595744681) internal successors, (331), 94 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) [2021-12-06 23:11:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:46,735 INFO L93 Difference]: Finished difference Result 3574 states and 3960 transitions. [2021-12-06 23:11:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-12-06 23:11:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.521276595744681) internal successors, (331), 94 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) Word has length 141 [2021-12-06 23:11:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:46,738 INFO L225 Difference]: With dead ends: 3574 [2021-12-06 23:11:46,738 INFO L226 Difference]: Without dead ends: 3574 [2021-12-06 23:11:46,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4413 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=879, Invalid=18305, Unknown=2, NotChecked=274, Total=19460 [2021-12-06 23:11:46,739 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 475 mSDsluCounter, 3482 mSDsCounter, 0 mSdLazyCounter, 8427 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 8855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 8427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:46,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 3545 Invalid, 8855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 8427 Invalid, 0 Unknown, 317 Unchecked, 3.0s Time] [2021-12-06 23:11:46,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-12-06 23:11:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3079. [2021-12-06 23:11:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3079 states, 3077 states have (on average 1.11667208319792) internal successors, (3436), 3078 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 3436 transitions. [2021-12-06 23:11:46,759 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 3436 transitions. Word has length 141 [2021-12-06 23:11:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:46,760 INFO L470 AbstractCegarLoop]: Abstraction has 3079 states and 3436 transitions. [2021-12-06 23:11:46,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.521276595744681) internal successors, (331), 94 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) [2021-12-06 23:11:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 3436 transitions. [2021-12-06 23:11:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-06 23:11:46,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:46,762 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:46,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-12-06 23:11:46,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:46,963 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash -688260628, now seen corresponding path program 19 times [2021-12-06 23:11:46,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:46,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450770323] [2021-12-06 23:11:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:46,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 41 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:11:48,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450770323] [2021-12-06 23:11:48,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450770323] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620193567] [2021-12-06 23:11:48,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:11:48,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:48,312 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:48,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-12-06 23:11:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:48,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-06 23:11:48,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:48,981 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 14 treesize of output 10 [2021-12-06 23:11:49,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:11:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 41 proven. 340 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:11:49,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:50,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-06 23:11:50,008 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 26 treesize of output 22 [2021-12-06 23:11:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 41 proven. 340 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:11:50,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620193567] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:50,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:50,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 28, 28] total 76 [2021-12-06 23:11:50,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432515736] [2021-12-06 23:11:50,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:50,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-06 23:11:50,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-06 23:11:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=5440, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 23:11:50,828 INFO L87 Difference]: Start difference. First operand 3079 states and 3436 transitions. Second operand has 76 states, 76 states have (on average 3.736842105263158) internal successors, (284), 76 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:11:58,389 INFO L93 Difference]: Finished difference Result 7676 states and 8525 transitions. [2021-12-06 23:11:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-12-06 23:11:58,389 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.736842105263158) internal successors, (284), 76 states have internal predecessors, (284), 0 states have call successors, (0), 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 141 [2021-12-06 23:11:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:11:58,393 INFO L225 Difference]: With dead ends: 7676 [2021-12-06 23:11:58,394 INFO L226 Difference]: Without dead ends: 7646 [2021-12-06 23:11:58,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3930 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1294, Invalid=19298, Unknown=0, NotChecked=0, Total=20592 [2021-12-06 23:11:58,395 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 2069 mSDsluCounter, 7768 mSDsCounter, 0 mSdLazyCounter, 7688 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 7939 SdHoareTripleChecker+Invalid, 8698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 7688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 895 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:11:58,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 7939 Invalid, 8698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 7688 Invalid, 0 Unknown, 895 Unchecked, 3.1s Time] [2021-12-06 23:11:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2021-12-06 23:11:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 3643. [2021-12-06 23:11:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 3641 states have (on average 1.1170008239494644) internal successors, (4067), 3642 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4067 transitions. [2021-12-06 23:11:58,430 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4067 transitions. Word has length 141 [2021-12-06 23:11:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:11:58,430 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 4067 transitions. [2021-12-06 23:11:58,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.736842105263158) internal successors, (284), 76 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:11:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4067 transitions. [2021-12-06 23:11:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 23:11:58,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:11:58,432 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:11:58,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-12-06 23:11:58,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-12-06 23:11:58,633 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:11:58,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:11:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1593501393, now seen corresponding path program 20 times [2021-12-06 23:11:58,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:11:58,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134615818] [2021-12-06 23:11:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:11:58,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:11:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:11:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 91 proven. 323 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:11:58,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:11:58,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134615818] [2021-12-06 23:11:58,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134615818] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:11:58,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278626159] [2021-12-06 23:11:58,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:11:58,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:11:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:11:58,942 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:11:58,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-12-06 23:11:59,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:11:59,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:11:59,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-06 23:11:59,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:11:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 120 proven. 294 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:11:59,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:59,873 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 5 treesize of output 3 [2021-12-06 23:11:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 120 proven. 294 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:11:59,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278626159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:11:59,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:11:59,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 51 [2021-12-06 23:11:59,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218687955] [2021-12-06 23:11:59,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:11:59,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 23:11:59,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:11:59,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 23:11:59,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2349, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 23:11:59,945 INFO L87 Difference]: Start difference. First operand 3643 states and 4067 transitions. Second operand has 52 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 52 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:01,580 INFO L93 Difference]: Finished difference Result 4790 states and 5312 transitions. [2021-12-06 23:12:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 23:12:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 52 states have internal predecessors, (241), 0 states have call successors, (0), 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 145 [2021-12-06 23:12:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:01,583 INFO L225 Difference]: With dead ends: 4790 [2021-12-06 23:12:01,583 INFO L226 Difference]: Without dead ends: 4790 [2021-12-06 23:12:01,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=994, Invalid=4262, Unknown=0, NotChecked=0, Total=5256 [2021-12-06 23:12:01,583 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 1129 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:12:01,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 1817 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:12:01,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-12-06 23:12:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4320. [2021-12-06 23:12:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4318 states have (on average 1.1213524779990736) internal successors, (4842), 4319 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 4842 transitions. [2021-12-06 23:12:01,614 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 4842 transitions. Word has length 145 [2021-12-06 23:12:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:01,614 INFO L470 AbstractCegarLoop]: Abstraction has 4320 states and 4842 transitions. [2021-12-06 23:12:01,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 52 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 4842 transitions. [2021-12-06 23:12:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 23:12:01,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:01,617 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:01,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-12-06 23:12:01,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:01,818 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:12:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:01,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1428021056, now seen corresponding path program 10 times [2021-12-06 23:12:01,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983861846] [2021-12-06 23:12:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:01,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 41 proven. 463 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 23:12:02,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:02,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983861846] [2021-12-06 23:12:02,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983861846] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:02,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140655155] [2021-12-06 23:12:02,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:12:02,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:02,430 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:02,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-12-06 23:12:02,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:12:02,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:02,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 23:12:02,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:02,602 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:12:02,602 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:12:03,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:12:03,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:12:03,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 23:12:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 195 proven. 157 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-06 23:12:03,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:12:04,683 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 13 treesize of output 11 [2021-12-06 23:12:04,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:12:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 182 proven. 170 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-06 23:12:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140655155] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:12:05,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:12:05,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 25, 25] total 75 [2021-12-06 23:12:05,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266435358] [2021-12-06 23:12:05,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:12:05,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-12-06 23:12:05,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:12:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-12-06 23:12:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=5140, Unknown=0, NotChecked=0, Total=5550 [2021-12-06 23:12:05,681 INFO L87 Difference]: Start difference. First operand 4320 states and 4842 transitions. Second operand has 75 states, 75 states have (on average 4.613333333333333) internal successors, (346), 75 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) [2021-12-06 23:12:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:09,630 INFO L93 Difference]: Finished difference Result 6310 states and 7012 transitions. [2021-12-06 23:12:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-06 23:12:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.613333333333333) internal successors, (346), 75 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) Word has length 145 [2021-12-06 23:12:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:09,634 INFO L225 Difference]: With dead ends: 6310 [2021-12-06 23:12:09,634 INFO L226 Difference]: Without dead ends: 6283 [2021-12-06 23:12:09,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1443, Invalid=14813, Unknown=0, NotChecked=0, Total=16256 [2021-12-06 23:12:09,635 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 304 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:12:09,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 2526 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1890 Invalid, 0 Unknown, 316 Unchecked, 0.7s Time] [2021-12-06 23:12:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6283 states. [2021-12-06 23:12:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6283 to 4705. [2021-12-06 23:12:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4705 states, 4703 states have (on average 1.1207739740591112) internal successors, (5271), 4704 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4705 states to 4705 states and 5271 transitions. [2021-12-06 23:12:09,672 INFO L78 Accepts]: Start accepts. Automaton has 4705 states and 5271 transitions. Word has length 145 [2021-12-06 23:12:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:09,672 INFO L470 AbstractCegarLoop]: Abstraction has 4705 states and 5271 transitions. [2021-12-06 23:12:09,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.613333333333333) internal successors, (346), 75 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) [2021-12-06 23:12:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4705 states and 5271 transitions. [2021-12-06 23:12:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 23:12:09,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:09,674 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:09,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-12-06 23:12:09,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:09,875 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:12:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 27679750, now seen corresponding path program 16 times [2021-12-06 23:12:09,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:09,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833923367] [2021-12-06 23:12:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:09,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 81 proven. 444 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:12:10,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:10,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833923367] [2021-12-06 23:12:10,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833923367] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:10,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460855276] [2021-12-06 23:12:10,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:12:10,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:10,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:10,426 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:10,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-12-06 23:12:10,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:12:10,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:10,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-06 23:12:10,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:10,620 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:12:10,620 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:12:11,331 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 14 treesize of output 10 [2021-12-06 23:12:11,399 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:12:11,399 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 17 treesize of output 23 [2021-12-06 23:12:11,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 3 [2021-12-06 23:12:24,925 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:12:24,925 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 18 treesize of output 18 [2021-12-06 23:12:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 327 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:12:25,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:12:26,530 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:12:26,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 23:12:26,535 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:12:26,536 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 33 [2021-12-06 23:12:26,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:12:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 349 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:12:28,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460855276] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:12:28,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:12:28,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 83 [2021-12-06 23:12:28,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779569478] [2021-12-06 23:12:28,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:12:28,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-12-06 23:12:28,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:12:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-12-06 23:12:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=6292, Unknown=0, NotChecked=0, Total=6806 [2021-12-06 23:12:28,509 INFO L87 Difference]: Start difference. First operand 4705 states and 5271 transitions. Second operand has 83 states, 83 states have (on average 5.096385542168675) internal successors, (423), 83 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:32,699 INFO L93 Difference]: Finished difference Result 5369 states and 5972 transitions. [2021-12-06 23:12:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-06 23:12:32,699 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.096385542168675) internal successors, (423), 83 states have internal predecessors, (423), 0 states have call successors, (0), 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 147 [2021-12-06 23:12:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:32,702 INFO L225 Difference]: With dead ends: 5369 [2021-12-06 23:12:32,702 INFO L226 Difference]: Without dead ends: 5244 [2021-12-06 23:12:32,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 258 SyntacticMatches, 11 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1315, Invalid=17867, Unknown=0, NotChecked=0, Total=19182 [2021-12-06 23:12:32,703 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 209 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:12:32,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1226 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1080 Invalid, 0 Unknown, 125 Unchecked, 0.5s Time] [2021-12-06 23:12:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2021-12-06 23:12:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 5241. [2021-12-06 23:12:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5239 states have (on average 1.115480053445314) internal successors, (5844), 5240 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 5844 transitions. [2021-12-06 23:12:32,737 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 5844 transitions. Word has length 147 [2021-12-06 23:12:32,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:32,737 INFO L470 AbstractCegarLoop]: Abstraction has 5241 states and 5844 transitions. [2021-12-06 23:12:32,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.096385542168675) internal successors, (423), 83 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 5844 transitions. [2021-12-06 23:12:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-06 23:12:32,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:32,740 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:32,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-12-06 23:12:32,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:32,941 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:12:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash 407759305, now seen corresponding path program 17 times [2021-12-06 23:12:32,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:32,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204113587] [2021-12-06 23:12:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:32,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 91 proven. 467 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:12:33,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:33,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204113587] [2021-12-06 23:12:33,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204113587] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:33,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855158643] [2021-12-06 23:12:33,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:12:33,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:33,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:33,199 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:33,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-12-06 23:12:33,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 23:12:33,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:33,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 107 conjunts are in the unsatisfiable core [2021-12-06 23:12:33,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:33,504 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:12:33,505 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:12:34,358 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 23:12:34,358 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 12 treesize of output 9 [2021-12-06 23:12:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 120 proven. 438 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:12:34,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:12:35,455 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-06 23:12:35,455 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 11 treesize of output 11 [2021-12-06 23:12:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 153 proven. 405 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:12:36,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855158643] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:12:36,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:12:36,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29, 26] total 75 [2021-12-06 23:12:36,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670236169] [2021-12-06 23:12:36,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:12:36,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-06 23:12:36,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:12:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-06 23:12:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=5152, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 23:12:36,339 INFO L87 Difference]: Start difference. First operand 5241 states and 5844 transitions. Second operand has 76 states, 75 states have (on average 5.933333333333334) internal successors, (445), 76 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:39,457 INFO L93 Difference]: Finished difference Result 12462 states and 13922 transitions. [2021-12-06 23:12:39,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-06 23:12:39,458 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 5.933333333333334) internal successors, (445), 76 states have internal predecessors, (445), 0 states have call successors, (0), 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 151 [2021-12-06 23:12:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:39,464 INFO L225 Difference]: With dead ends: 12462 [2021-12-06 23:12:39,464 INFO L226 Difference]: Without dead ends: 12462 [2021-12-06 23:12:39,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2740, Invalid=12760, Unknown=0, NotChecked=0, Total=15500 [2021-12-06 23:12:39,465 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 1005 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:12:39,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 1650 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:12:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12462 states. [2021-12-06 23:12:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12462 to 5729. [2021-12-06 23:12:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5729 states, 5727 states have (on average 1.1157674174960712) internal successors, (6390), 5728 states have internal predecessors, (6390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5729 states to 5729 states and 6390 transitions. [2021-12-06 23:12:39,519 INFO L78 Accepts]: Start accepts. Automaton has 5729 states and 6390 transitions. Word has length 151 [2021-12-06 23:12:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:39,519 INFO L470 AbstractCegarLoop]: Abstraction has 5729 states and 6390 transitions. [2021-12-06 23:12:39,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 5.933333333333334) internal successors, (445), 76 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5729 states and 6390 transitions. [2021-12-06 23:12:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 23:12:39,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:39,522 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:39,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-12-06 23:12:39,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:39,723 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:12:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -709746735, now seen corresponding path program 21 times [2021-12-06 23:12:39,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:39,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941303110] [2021-12-06 23:12:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:39,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 264 proven. 181 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 23:12:40,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:40,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941303110] [2021-12-06 23:12:40,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941303110] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:40,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893232423] [2021-12-06 23:12:40,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:12:40,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:40,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:40,021 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:40,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-12-06 23:12:40,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-06 23:12:40,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:40,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-06 23:12:40,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:41,144 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 14 treesize of output 10 [2021-12-06 23:12:42,047 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:12:42,048 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 18 treesize of output 10 [2021-12-06 23:12:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 46 proven. 432 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:12:42,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:12:42,645 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 13 [2021-12-06 23:12:42,646 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 26 treesize of output 22 [2021-12-06 23:12:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 46 proven. 432 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 23:12:42,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893232423] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:12:42,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:12:42,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 28] total 64 [2021-12-06 23:12:42,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988732981] [2021-12-06 23:12:42,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:12:42,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-06 23:12:42,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:12:42,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-06 23:12:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3802, Unknown=0, NotChecked=0, Total=4032 [2021-12-06 23:12:42,810 INFO L87 Difference]: Start difference. First operand 5729 states and 6390 transitions. Second operand has 64 states, 64 states have (on average 4.84375) internal successors, (310), 64 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:50,525 INFO L93 Difference]: Finished difference Result 9338 states and 10389 transitions. [2021-12-06 23:12:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2021-12-06 23:12:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.84375) internal successors, (310), 64 states have internal predecessors, (310), 0 states have call successors, (0), 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 152 [2021-12-06 23:12:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:50,530 INFO L225 Difference]: With dead ends: 9338 [2021-12-06 23:12:50,530 INFO L226 Difference]: Without dead ends: 9327 [2021-12-06 23:12:50,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 267 SyntacticMatches, 13 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 12 DeprecatedPredicates, 15294 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2341, Invalid=40715, Unknown=0, NotChecked=0, Total=43056 [2021-12-06 23:12:50,532 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 1692 mSDsluCounter, 7130 mSDsCounter, 0 mSdLazyCounter, 10883 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 7391 SdHoareTripleChecker+Invalid, 13320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 10883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2212 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:12:50,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 7391 Invalid, 13320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 10883 Invalid, 0 Unknown, 2212 Unchecked, 3.1s Time] [2021-12-06 23:12:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9327 states. [2021-12-06 23:12:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9327 to 5793. [2021-12-06 23:12:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5791 states have (on average 1.1155240891037816) internal successors, (6460), 5792 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 6460 transitions. [2021-12-06 23:12:50,581 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 6460 transitions. Word has length 152 [2021-12-06 23:12:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:50,581 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 6460 transitions. [2021-12-06 23:12:50,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.84375) internal successors, (310), 64 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 6460 transitions. [2021-12-06 23:12:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-06 23:12:50,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:50,583 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:50,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-12-06 23:12:50,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:50,785 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:12:50,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:50,786 INFO L85 PathProgramCache]: Analyzing trace with hash -459689528, now seen corresponding path program 11 times [2021-12-06 23:12:50,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:50,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794173322] [2021-12-06 23:12:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:50,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 46 proven. 515 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:12:51,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794173322] [2021-12-06 23:12:51,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794173322] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220654670] [2021-12-06 23:12:51,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:12:51,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:51,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:51,421 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:51,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-12-06 23:12:51,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 23:12:51,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:51,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 23:12:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:52,116 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 14 treesize of output 10 [2021-12-06 23:12:52,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:12:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 46 proven. 363 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-12-06 23:12:52,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:12:52,584 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 13 [2021-12-06 23:12:52,585 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 26 treesize of output 22 [2021-12-06 23:12:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 46 proven. 363 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-12-06 23:12:52,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220654670] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:12:52,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:12:52,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 24, 24] total 51 [2021-12-06 23:12:52,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844341780] [2021-12-06 23:12:52,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:12:52,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-06 23:12:52,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:12:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-06 23:12:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2395, Unknown=0, NotChecked=0, Total=2550 [2021-12-06 23:12:52,767 INFO L87 Difference]: Start difference. First operand 5793 states and 6460 transitions. Second operand has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:55,634 INFO L93 Difference]: Finished difference Result 6049 states and 6686 transitions. [2021-12-06 23:12:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 23:12:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 0 states have call successors, (0), 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 152 [2021-12-06 23:12:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:55,637 INFO L225 Difference]: With dead ends: 6049 [2021-12-06 23:12:55,637 INFO L226 Difference]: Without dead ends: 6019 [2021-12-06 23:12:55,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 283 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=687, Invalid=6453, Unknown=0, NotChecked=0, Total=7140 [2021-12-06 23:12:55,638 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 1308 mSDsluCounter, 3637 mSDsCounter, 0 mSdLazyCounter, 4481 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 4579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:12:55,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 3779 Invalid, 4579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 4481 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 23:12:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2021-12-06 23:12:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 5181. [2021-12-06 23:12:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5179 states have (on average 1.111990731801506) internal successors, (5759), 5180 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 5759 transitions. [2021-12-06 23:12:55,669 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 5759 transitions. Word has length 152 [2021-12-06 23:12:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:55,670 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 5759 transitions. [2021-12-06 23:12:55,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 5759 transitions. [2021-12-06 23:12:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 23:12:55,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:55,672 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:55,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-12-06 23:12:55,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-12-06 23:12:55,873 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:12:55,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash 112867661, now seen corresponding path program 2 times [2021-12-06 23:12:55,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:55,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053416601] [2021-12-06 23:12:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:55,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 88 proven. 493 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:12:56,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053416601] [2021-12-06 23:12:56,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053416601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030191361] [2021-12-06 23:12:56,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:12:56,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:56,234 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:56,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-12-06 23:12:56,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:12:56,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:56,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-06 23:12:56,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:56,417 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 10 treesize of output 8 [2021-12-06 23:12:56,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:12:56,672 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 16 treesize of output 18 [2021-12-06 23:12:57,039 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:12:57,040 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 15 treesize of output 10 [2021-12-06 23:12:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 88 proven. 493 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:12:57,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:12:57,209 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3952 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_3952) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 8)) 0)) is different from false [2021-12-06 23:12:57,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:12:57,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:12:57,217 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:12:57,217 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 37 treesize of output 37 [2021-12-06 23:12:57,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:12:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 88 proven. 493 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:12:57,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030191361] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:12:57,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:12:57,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 49 [2021-12-06 23:12:57,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997613367] [2021-12-06 23:12:57,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:12:57,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 23:12:57,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:12:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 23:12:57,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2127, Unknown=1, NotChecked=92, Total=2352 [2021-12-06 23:12:57,616 INFO L87 Difference]: Start difference. First operand 5181 states and 5759 transitions. Second operand has 49 states, 49 states have (on average 5.8979591836734695) internal successors, (289), 49 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:12:58,684 INFO L93 Difference]: Finished difference Result 7718 states and 8570 transitions. [2021-12-06 23:12:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 23:12:58,685 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.8979591836734695) internal successors, (289), 49 states have internal predecessors, (289), 0 states have call successors, (0), 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 158 [2021-12-06 23:12:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:12:58,687 INFO L225 Difference]: With dead ends: 7718 [2021-12-06 23:12:58,687 INFO L226 Difference]: Without dead ends: 5454 [2021-12-06 23:12:58,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 289 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=258, Invalid=4167, Unknown=1, NotChecked=130, Total=4556 [2021-12-06 23:12:58,688 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 257 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:12:58,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 1642 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2203 Invalid, 0 Unknown, 148 Unchecked, 0.6s Time] [2021-12-06 23:12:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2021-12-06 23:12:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 5304. [2021-12-06 23:12:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5302 states have (on average 1.1178800452659374) internal successors, (5927), 5303 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 5927 transitions. [2021-12-06 23:12:58,723 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 5927 transitions. Word has length 158 [2021-12-06 23:12:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:12:58,723 INFO L470 AbstractCegarLoop]: Abstraction has 5304 states and 5927 transitions. [2021-12-06 23:12:58,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.8979591836734695) internal successors, (289), 49 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:12:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 5927 transitions. [2021-12-06 23:12:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 23:12:58,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:12:58,726 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:12:58,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-12-06 23:12:58,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:58,927 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:12:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:12:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1774462539, now seen corresponding path program 22 times [2021-12-06 23:12:58,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:12:58,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339145488] [2021-12-06 23:12:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:12:58,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:12:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:12:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 120 proven. 395 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 23:12:59,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:12:59,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339145488] [2021-12-06 23:12:59,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339145488] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:12:59,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924670605] [2021-12-06 23:12:59,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:12:59,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:12:59,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:12:59,286 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:12:59,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-12-06 23:12:59,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:12:59,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:12:59,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-06 23:12:59,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:12:59,454 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:12:59,454 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:12:59,713 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 [2021-12-06 23:13:00,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:13:00,344 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 19 treesize of output 19 [2021-12-06 23:13:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 162 proven. 353 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 23:13:00,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:01,587 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 13 [2021-12-06 23:13:01,589 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 26 treesize of output 22 [2021-12-06 23:13:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 190 proven. 325 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 23:13:03,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924670605] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:03,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:03,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 30] total 74 [2021-12-06 23:13:03,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850993335] [2021-12-06 23:13:03,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:03,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-12-06 23:13:03,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-12-06 23:13:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=4967, Unknown=0, NotChecked=0, Total=5550 [2021-12-06 23:13:03,339 INFO L87 Difference]: Start difference. First operand 5304 states and 5927 transitions. Second operand has 75 states, 74 states have (on average 4.5675675675675675) internal successors, (338), 75 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) [2021-12-06 23:13:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:09,667 INFO L93 Difference]: Finished difference Result 8803 states and 9675 transitions. [2021-12-06 23:13:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-12-06 23:13:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 4.5675675675675675) internal successors, (338), 75 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) Word has length 160 [2021-12-06 23:13:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:09,671 INFO L225 Difference]: With dead ends: 8803 [2021-12-06 23:13:09,671 INFO L226 Difference]: Without dead ends: 8803 [2021-12-06 23:13:09,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2452 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3499, Invalid=14057, Unknown=0, NotChecked=0, Total=17556 [2021-12-06 23:13:09,672 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 2163 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 7351 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 3559 SdHoareTripleChecker+Invalid, 7810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 7351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:09,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2163 Valid, 3559 Invalid, 7810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 7351 Invalid, 0 Unknown, 262 Unchecked, 2.9s Time] [2021-12-06 23:13:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8803 states. [2021-12-06 23:13:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8803 to 5528. [2021-12-06 23:13:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5526 states have (on average 1.1185305826999639) internal successors, (6181), 5527 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 6181 transitions. [2021-12-06 23:13:09,714 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 6181 transitions. Word has length 160 [2021-12-06 23:13:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:09,714 INFO L470 AbstractCegarLoop]: Abstraction has 5528 states and 6181 transitions. [2021-12-06 23:13:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 4.5675675675675675) internal successors, (338), 75 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) [2021-12-06 23:13:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 6181 transitions. [2021-12-06 23:13:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 23:13:09,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:09,717 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:09,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-12-06 23:13:09,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:09,918 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:09,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1864754593, now seen corresponding path program 18 times [2021-12-06 23:13:09,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:09,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212928465] [2021-12-06 23:13:09,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:09,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 91 proven. 567 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:10,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212928465] [2021-12-06 23:13:10,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212928465] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:10,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839540927] [2021-12-06 23:13:10,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:13:10,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:10,306 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:10,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-12-06 23:13:10,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-12-06 23:13:10,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:13:10,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 89 conjunts are in the unsatisfiable core [2021-12-06 23:13:10,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:10,698 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 10 treesize of output 8 [2021-12-06 23:13:11,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:13:11,064 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 17 treesize of output 19 [2021-12-06 23:13:11,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:13:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 91 proven. 567 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:11,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:11,464 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4112 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_4112) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 9)) 0)) is different from false [2021-12-06 23:13:11,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:13:11,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:13:11,471 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:13:11,471 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 37 treesize of output 37 [2021-12-06 23:13:11,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:13:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 91 proven. 567 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:11,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839540927] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:11,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:11,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 46 [2021-12-06 23:13:11,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594645093] [2021-12-06 23:13:11,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:11,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 23:13:11,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:11,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 23:13:11,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1857, Unknown=1, NotChecked=86, Total=2070 [2021-12-06 23:13:11,702 INFO L87 Difference]: Start difference. First operand 5528 states and 6181 transitions. Second operand has 46 states, 46 states have (on average 5.195652173913044) internal successors, (239), 46 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:13,140 INFO L93 Difference]: Finished difference Result 9181 states and 10234 transitions. [2021-12-06 23:13:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 23:13:13,140 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.195652173913044) internal successors, (239), 46 states have internal predecessors, (239), 0 states have call successors, (0), 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 162 [2021-12-06 23:13:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:13,144 INFO L225 Difference]: With dead ends: 9181 [2021-12-06 23:13:13,145 INFO L226 Difference]: Without dead ends: 7122 [2021-12-06 23:13:13,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 303 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=4109, Unknown=1, NotChecked=130, Total=4556 [2021-12-06 23:13:13,145 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 468 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 3209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:13,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 2654 Invalid, 3209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2897 Invalid, 0 Unknown, 271 Unchecked, 0.9s Time] [2021-12-06 23:13:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2021-12-06 23:13:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 6167. [2021-12-06 23:13:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6167 states, 6165 states have (on average 1.1200324412003244) internal successors, (6905), 6166 states have internal predecessors, (6905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6167 states to 6167 states and 6905 transitions. [2021-12-06 23:13:13,187 INFO L78 Accepts]: Start accepts. Automaton has 6167 states and 6905 transitions. Word has length 162 [2021-12-06 23:13:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:13,187 INFO L470 AbstractCegarLoop]: Abstraction has 6167 states and 6905 transitions. [2021-12-06 23:13:13,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.195652173913044) internal successors, (239), 46 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6167 states and 6905 transitions. [2021-12-06 23:13:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 23:13:13,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:13,189 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:13,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-12-06 23:13:13,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-12-06 23:13:13,390 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash -393548389, now seen corresponding path program 12 times [2021-12-06 23:13:13,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:13,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977792520] [2021-12-06 23:13:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:13,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 51 proven. 611 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:13:14,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977792520] [2021-12-06 23:13:14,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977792520] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:14,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968819189] [2021-12-06 23:13:14,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:13:14,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:14,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:14,161 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:14,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-12-06 23:13:14,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-12-06 23:13:14,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:13:14,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-06 23:13:14,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:15,231 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 14 treesize of output 10 [2021-12-06 23:13:15,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:13:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 51 proven. 458 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-12-06 23:13:15,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:15,724 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 13 [2021-12-06 23:13:15,725 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 26 treesize of output 22 [2021-12-06 23:13:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 51 proven. 458 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-12-06 23:13:15,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968819189] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:15,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:15,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 26, 26] total 55 [2021-12-06 23:13:15,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075070017] [2021-12-06 23:13:15,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:15,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-06 23:13:15,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-06 23:13:15,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2804, Unknown=0, NotChecked=0, Total=2970 [2021-12-06 23:13:15,902 INFO L87 Difference]: Start difference. First operand 6167 states and 6905 transitions. Second operand has 55 states, 55 states have (on average 4.472727272727273) internal successors, (246), 55 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:21,209 INFO L93 Difference]: Finished difference Result 7758 states and 8538 transitions. [2021-12-06 23:13:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-12-06 23:13:21,210 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.472727272727273) internal successors, (246), 55 states have internal predecessors, (246), 0 states have call successors, (0), 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 163 [2021-12-06 23:13:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:21,213 INFO L225 Difference]: With dead ends: 7758 [2021-12-06 23:13:21,213 INFO L226 Difference]: Without dead ends: 5884 [2021-12-06 23:13:21,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 305 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1461, Invalid=14289, Unknown=0, NotChecked=0, Total=15750 [2021-12-06 23:13:21,214 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 2122 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 5576 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 5995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 5576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:21,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2122 Valid, 4573 Invalid, 5995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 5576 Invalid, 0 Unknown, 215 Unchecked, 1.9s Time] [2021-12-06 23:13:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2021-12-06 23:13:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5002. [2021-12-06 23:13:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5002 states, 5000 states have (on average 1.1142) internal successors, (5571), 5001 states have internal predecessors, (5571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5002 states to 5002 states and 5571 transitions. [2021-12-06 23:13:21,251 INFO L78 Accepts]: Start accepts. Automaton has 5002 states and 5571 transitions. Word has length 163 [2021-12-06 23:13:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:21,251 INFO L470 AbstractCegarLoop]: Abstraction has 5002 states and 5571 transitions. [2021-12-06 23:13:21,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.472727272727273) internal successors, (246), 55 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5002 states and 5571 transitions. [2021-12-06 23:13:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-06 23:13:21,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:21,253 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:21,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-12-06 23:13:21,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-12-06 23:13:21,454 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2129574270, now seen corresponding path program 19 times [2021-12-06 23:13:21,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:21,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725995767] [2021-12-06 23:13:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:21,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 120 proven. 575 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:21,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:21,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725995767] [2021-12-06 23:13:21,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725995767] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:21,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534170631] [2021-12-06 23:13:21,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:13:21,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:21,734 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:21,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-12-06 23:13:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 23:13:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 153 proven. 542 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:22,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:22,874 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 5 treesize of output 3 [2021-12-06 23:13:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 153 proven. 542 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:22,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534170631] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:22,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:22,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 51 [2021-12-06 23:13:22,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749701085] [2021-12-06 23:13:22,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:22,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 23:13:22,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 23:13:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2326, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 23:13:22,932 INFO L87 Difference]: Start difference. First operand 5002 states and 5571 transitions. Second operand has 52 states, 51 states have (on average 6.705882352941177) internal successors, (342), 52 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:23,883 INFO L93 Difference]: Finished difference Result 6286 states and 6990 transitions. [2021-12-06 23:13:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 23:13:23,883 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 6.705882352941177) internal successors, (342), 52 states have internal predecessors, (342), 0 states have call successors, (0), 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 166 [2021-12-06 23:13:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:23,886 INFO L225 Difference]: With dead ends: 6286 [2021-12-06 23:13:23,886 INFO L226 Difference]: Without dead ends: 6286 [2021-12-06 23:13:23,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 302 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=871, Invalid=3685, Unknown=0, NotChecked=0, Total=4556 [2021-12-06 23:13:23,887 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 1106 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:23,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 1352 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:13:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-12-06 23:13:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 5375. [2021-12-06 23:13:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5375 states, 5373 states have (on average 1.1139028475711892) internal successors, (5985), 5374 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5375 states to 5375 states and 5985 transitions. [2021-12-06 23:13:23,922 INFO L78 Accepts]: Start accepts. Automaton has 5375 states and 5985 transitions. Word has length 166 [2021-12-06 23:13:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:23,922 INFO L470 AbstractCegarLoop]: Abstraction has 5375 states and 5985 transitions. [2021-12-06 23:13:23,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 6.705882352941177) internal successors, (342), 52 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5375 states and 5985 transitions. [2021-12-06 23:13:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-06 23:13:23,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:23,925 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:23,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-12-06 23:13:24,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-12-06 23:13:24,126 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2127866635, now seen corresponding path program 23 times [2021-12-06 23:13:24,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:24,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022772878] [2021-12-06 23:13:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:24,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 403 proven. 261 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 23:13:24,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022772878] [2021-12-06 23:13:24,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022772878] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508025266] [2021-12-06 23:13:24,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:13:24,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:24,432 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:24,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-12-06 23:13:24,989 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-12-06 23:13:24,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:13:24,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 23:13:24,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:25,010 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:13:25,010 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:13:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 474 proven. 190 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 23:13:25,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 474 proven. 190 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-06 23:13:26,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508025266] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:26,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:26,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 70 [2021-12-06 23:13:26,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52806388] [2021-12-06 23:13:26,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:26,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-06 23:13:26,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-06 23:13:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=4001, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 23:13:26,440 INFO L87 Difference]: Start difference. First operand 5375 states and 5985 transitions. Second operand has 70 states, 70 states have (on average 4.757142857142857) internal successors, (333), 70 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) [2021-12-06 23:13:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:28,819 INFO L93 Difference]: Finished difference Result 11590 states and 12584 transitions. [2021-12-06 23:13:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-12-06 23:13:28,819 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.757142857142857) internal successors, (333), 70 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) Word has length 174 [2021-12-06 23:13:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:28,824 INFO L225 Difference]: With dead ends: 11590 [2021-12-06 23:13:28,824 INFO L226 Difference]: Without dead ends: 9154 [2021-12-06 23:13:28,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6792 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5147, Invalid=17503, Unknown=0, NotChecked=0, Total=22650 [2021-12-06 23:13:28,825 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 3555 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3555 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:28,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3555 Valid, 1048 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:13:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9154 states. [2021-12-06 23:13:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9154 to 6155. [2021-12-06 23:13:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6155 states, 6153 states have (on average 1.1149032992036405) internal successors, (6860), 6154 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 6860 transitions. [2021-12-06 23:13:28,875 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 6860 transitions. Word has length 174 [2021-12-06 23:13:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:28,875 INFO L470 AbstractCegarLoop]: Abstraction has 6155 states and 6860 transitions. [2021-12-06 23:13:28,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.757142857142857) internal successors, (333), 70 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) [2021-12-06 23:13:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 6860 transitions. [2021-12-06 23:13:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 23:13:28,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:28,878 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:28,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-12-06 23:13:29,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-12-06 23:13:29,079 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1177050420, now seen corresponding path program 20 times [2021-12-06 23:13:29,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:29,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870399837] [2021-12-06 23:13:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:29,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 101 proven. 705 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:29,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:29,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870399837] [2021-12-06 23:13:29,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870399837] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:29,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147164153] [2021-12-06 23:13:29,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:13:29,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:29,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:29,491 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:29,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-12-06 23:13:29,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:13:29,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:13:29,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-06 23:13:29,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:29,721 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 10 treesize of output 8 [2021-12-06 23:13:30,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:13:30,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-06 23:13:30,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:13:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 101 proven. 705 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:30,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:30,604 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4424 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_4424) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 10)) 0)) is different from false [2021-12-06 23:13:30,608 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:13:30,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:13:30,615 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:13:30,615 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 37 treesize of output 37 [2021-12-06 23:13:30,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:13:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 101 proven. 705 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:30,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147164153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:30,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:30,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 49 [2021-12-06 23:13:30,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211587266] [2021-12-06 23:13:30,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:30,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 23:13:30,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 23:13:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2126, Unknown=1, NotChecked=92, Total=2352 [2021-12-06 23:13:30,844 INFO L87 Difference]: Start difference. First operand 6155 states and 6860 transitions. Second operand has 49 states, 49 states have (on average 5.26530612244898) internal successors, (258), 49 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) [2021-12-06 23:13:32,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:32,253 INFO L93 Difference]: Finished difference Result 10813 states and 12020 transitions. [2021-12-06 23:13:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 23:13:32,253 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.26530612244898) internal successors, (258), 49 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) Word has length 177 [2021-12-06 23:13:32,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:32,257 INFO L225 Difference]: With dead ends: 10813 [2021-12-06 23:13:32,257 INFO L226 Difference]: Without dead ends: 7109 [2021-12-06 23:13:32,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 331 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=222, Invalid=3563, Unknown=1, NotChecked=120, Total=3906 [2021-12-06 23:13:32,258 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 126 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 416 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:32,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 3020 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3416 Invalid, 0 Unknown, 416 Unchecked, 1.0s Time] [2021-12-06 23:13:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7109 states. [2021-12-06 23:13:32,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7109 to 6297. [2021-12-06 23:13:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6297 states, 6295 states have (on average 1.1146942017474186) internal successors, (7017), 6296 states have internal predecessors, (7017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6297 states to 6297 states and 7017 transitions. [2021-12-06 23:13:32,301 INFO L78 Accepts]: Start accepts. Automaton has 6297 states and 7017 transitions. Word has length 177 [2021-12-06 23:13:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:32,301 INFO L470 AbstractCegarLoop]: Abstraction has 6297 states and 7017 transitions. [2021-12-06 23:13:32,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.26530612244898) internal successors, (258), 49 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) [2021-12-06 23:13:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 6297 states and 7017 transitions. [2021-12-06 23:13:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 23:13:32,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:32,303 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:32,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-12-06 23:13:32,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-12-06 23:13:32,505 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:32,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash -980803544, now seen corresponding path program 24 times [2021-12-06 23:13:32,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:32,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649354481] [2021-12-06 23:13:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:32,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 399 proven. 228 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:13:32,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:32,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649354481] [2021-12-06 23:13:32,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649354481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:32,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958692916] [2021-12-06 23:13:32,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:13:32,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:32,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:32,825 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:32,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-12-06 23:13:34,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-12-06 23:13:34,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:13:34,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-06 23:13:34,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:34,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:13:34,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:13:34,105 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 10 treesize of output 8 [2021-12-06 23:13:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 471 proven. 378 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:13:35,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 471 proven. 153 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-06 23:13:35,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958692916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:35,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:35,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 34, 25] total 70 [2021-12-06 23:13:35,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135540310] [2021-12-06 23:13:35,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-06 23:13:35,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:35,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-06 23:13:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=4063, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 23:13:35,615 INFO L87 Difference]: Start difference. First operand 6297 states and 7017 transitions. Second operand has 70 states, 70 states have (on average 5.042857142857143) internal successors, (353), 70 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:37,867 INFO L93 Difference]: Finished difference Result 8008 states and 8843 transitions. [2021-12-06 23:13:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-12-06 23:13:37,868 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.042857142857143) internal successors, (353), 70 states have internal predecessors, (353), 0 states have call successors, (0), 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 178 [2021-12-06 23:13:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:37,871 INFO L225 Difference]: With dead ends: 8008 [2021-12-06 23:13:37,871 INFO L226 Difference]: Without dead ends: 6074 [2021-12-06 23:13:37,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5611 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3097, Invalid=15263, Unknown=0, NotChecked=0, Total=18360 [2021-12-06 23:13:37,872 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 1000 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:37,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1369 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:13:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6074 states. [2021-12-06 23:13:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6074 to 6074. [2021-12-06 23:13:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6074 states, 6072 states have (on average 1.1157773386034255) internal successors, (6775), 6073 states have internal predecessors, (6775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 6775 transitions. [2021-12-06 23:13:37,913 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 6775 transitions. Word has length 178 [2021-12-06 23:13:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:37,913 INFO L470 AbstractCegarLoop]: Abstraction has 6074 states and 6775 transitions. [2021-12-06 23:13:37,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.042857142857143) internal successors, (353), 70 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 6775 transitions. [2021-12-06 23:13:37,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-06 23:13:37,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:37,915 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:37,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-12-06 23:13:38,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-12-06 23:13:38,116 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash 366672207, now seen corresponding path program 21 times [2021-12-06 23:13:38,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:38,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062147931] [2021-12-06 23:13:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:38,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 153 proven. 694 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:38,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:38,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062147931] [2021-12-06 23:13:38,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062147931] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:38,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362436504] [2021-12-06 23:13:38,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:13:38,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:38,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:38,441 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:38,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-12-06 23:13:38,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-12-06 23:13:38,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:13:38,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-06 23:13:38,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 190 proven. 657 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:39,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:40,260 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 15 treesize of output 11 [2021-12-06 23:13:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 231 proven. 616 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:13:40,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362436504] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:40,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:40,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 28] total 68 [2021-12-06 23:13:40,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666468124] [2021-12-06 23:13:40,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:40,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 23:13:40,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 23:13:40,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=4056, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 23:13:40,801 INFO L87 Difference]: Start difference. First operand 6074 states and 6775 transitions. Second operand has 69 states, 68 states have (on average 7.147058823529412) internal successors, (486), 69 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:42,362 INFO L93 Difference]: Finished difference Result 7370 states and 8161 transitions. [2021-12-06 23:13:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-06 23:13:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 7.147058823529412) internal successors, (486), 69 states have internal predecessors, (486), 0 states have call successors, (0), 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 181 [2021-12-06 23:13:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:42,367 INFO L225 Difference]: With dead ends: 7370 [2021-12-06 23:13:42,367 INFO L226 Difference]: Without dead ends: 7370 [2021-12-06 23:13:42,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1903, Invalid=7217, Unknown=0, NotChecked=0, Total=9120 [2021-12-06 23:13:42,367 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 2123 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:42,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 1018 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:13:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2021-12-06 23:13:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 6528. [2021-12-06 23:13:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6528 states, 6526 states have (on average 1.1155378486055776) internal successors, (7280), 6527 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 7280 transitions. [2021-12-06 23:13:42,412 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 7280 transitions. Word has length 181 [2021-12-06 23:13:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:42,413 INFO L470 AbstractCegarLoop]: Abstraction has 6528 states and 7280 transitions. [2021-12-06 23:13:42,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 7.147058823529412) internal successors, (486), 69 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 7280 transitions. [2021-12-06 23:13:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 23:13:42,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:42,415 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:42,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-12-06 23:13:42,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-12-06 23:13:42,617 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:42,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash -370042363, now seen corresponding path program 25 times [2021-12-06 23:13:42,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:42,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55138762] [2021-12-06 23:13:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:42,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 399 proven. 265 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:13:42,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:42,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55138762] [2021-12-06 23:13:42,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55138762] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:42,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253072708] [2021-12-06 23:13:42,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:13:42,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:42,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:42,933 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-12-06 23:13:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:43,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 23:13:43,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:13:43,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:13:43,147 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 10 treesize of output 8 [2021-12-06 23:13:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 474 proven. 190 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:13:43,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 419 proven. 245 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:13:44,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253072708] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:44,520 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:44,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 66 [2021-12-06 23:13:44,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647896187] [2021-12-06 23:13:44,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:44,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-06 23:13:44,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:44,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-06 23:13:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=3536, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 23:13:44,521 INFO L87 Difference]: Start difference. First operand 6528 states and 7280 transitions. Second operand has 66 states, 66 states have (on average 4.878787878787879) internal successors, (322), 66 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) [2021-12-06 23:13:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:45,471 INFO L93 Difference]: Finished difference Result 6861 states and 7584 transitions. [2021-12-06 23:13:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 23:13:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.878787878787879) internal successors, (322), 66 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) Word has length 182 [2021-12-06 23:13:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:45,475 INFO L225 Difference]: With dead ends: 6861 [2021-12-06 23:13:45,475 INFO L226 Difference]: Without dead ends: 5594 [2021-12-06 23:13:45,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1905, Invalid=6837, Unknown=0, NotChecked=0, Total=8742 [2021-12-06 23:13:45,475 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 416 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:45,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 548 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:13:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-12-06 23:13:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5591. [2021-12-06 23:13:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 5589 states have (on average 1.1134371086061907) internal successors, (6223), 5590 states have internal predecessors, (6223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 6223 transitions. [2021-12-06 23:13:45,515 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 6223 transitions. Word has length 182 [2021-12-06 23:13:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:45,515 INFO L470 AbstractCegarLoop]: Abstraction has 5591 states and 6223 transitions. [2021-12-06 23:13:45,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.878787878787879) internal successors, (322), 66 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) [2021-12-06 23:13:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 6223 transitions. [2021-12-06 23:13:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 23:13:45,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:45,517 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:45,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-12-06 23:13:45,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:45,718 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:45,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:45,719 INFO L85 PathProgramCache]: Analyzing trace with hash 941546850, now seen corresponding path program 26 times [2021-12-06 23:13:45,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:45,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914010972] [2021-12-06 23:13:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:45,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:13:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 56 proven. 880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:13:47,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:13:47,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914010972] [2021-12-06 23:13:47,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914010972] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:13:47,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670347196] [2021-12-06 23:13:47,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:13:47,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:47,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:13:47,844 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:13:47,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-12-06 23:13:48,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:13:48,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:13:48,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 89 conjunts are in the unsatisfiable core [2021-12-06 23:13:48,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:13:48,629 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 14 treesize of output 10 [2021-12-06 23:13:48,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:13:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 56 proven. 649 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:13:48,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:13:49,227 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 13 [2021-12-06 23:13:49,228 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 26 treesize of output 22 [2021-12-06 23:13:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 56 proven. 649 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:13:49,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670347196] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:13:49,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:13:49,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 32, 32] total 69 [2021-12-06 23:13:49,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240721528] [2021-12-06 23:13:49,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:13:49,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 23:13:49,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:13:49,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 23:13:49,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=4509, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 23:13:49,531 INFO L87 Difference]: Start difference. First operand 5591 states and 6223 transitions. Second operand has 69 states, 69 states have (on average 3.8550724637681157) internal successors, (266), 69 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:59,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:13:59,301 INFO L93 Difference]: Finished difference Result 16073 states and 17797 transitions. [2021-12-06 23:13:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-12-06 23:13:59,302 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.8550724637681157) internal successors, (266), 69 states have internal predecessors, (266), 0 states have call successors, (0), 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 186 [2021-12-06 23:13:59,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:13:59,310 INFO L225 Difference]: With dead ends: 16073 [2021-12-06 23:13:59,310 INFO L226 Difference]: Without dead ends: 16001 [2021-12-06 23:13:59,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 348 SyntacticMatches, 3 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2972 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1278, Invalid=17628, Unknown=0, NotChecked=0, Total=18906 [2021-12-06 23:13:59,311 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 3865 mSDsluCounter, 11806 mSDsCounter, 0 mSdLazyCounter, 12163 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3865 SdHoareTripleChecker+Valid, 12030 SdHoareTripleChecker+Invalid, 12875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 12163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:13:59,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3865 Valid, 12030 Invalid, 12875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 12163 Invalid, 0 Unknown, 414 Unchecked, 4.7s Time] [2021-12-06 23:13:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16001 states. [2021-12-06 23:13:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16001 to 6621. [2021-12-06 23:13:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6621 states, 6619 states have (on average 1.1160296117238253) internal successors, (7387), 6620 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6621 states to 6621 states and 7387 transitions. [2021-12-06 23:13:59,385 INFO L78 Accepts]: Start accepts. Automaton has 6621 states and 7387 transitions. Word has length 186 [2021-12-06 23:13:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:13:59,386 INFO L470 AbstractCegarLoop]: Abstraction has 6621 states and 7387 transitions. [2021-12-06 23:13:59,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.8550724637681157) internal successors, (266), 69 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:13:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 6621 states and 7387 transitions. [2021-12-06 23:13:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 23:13:59,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:13:59,388 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:13:59,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-12-06 23:13:59,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:13:59,589 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:13:59,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:13:59,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1892331777, now seen corresponding path program 27 times [2021-12-06 23:13:59,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:13:59,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199855480] [2021-12-06 23:13:59,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:13:59,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:13:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 190 proven. 560 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:14:00,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:14:00,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199855480] [2021-12-06 23:14:00,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199855480] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:14:00,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543025617] [2021-12-06 23:14:00,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:14:00,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:00,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:14:00,018 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:14:00,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-12-06 23:14:02,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-12-06 23:14:02,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:14:02,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 23:14:02,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:14:02,719 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:14:02,719 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:14:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 231 proven. 519 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:14:03,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:14:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 276 proven. 474 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 23:14:05,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543025617] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:14:05,124 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:14:05,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 88 [2021-12-06 23:14:05,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958620092] [2021-12-06 23:14:05,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:14:05,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-12-06 23:14:05,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:14:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-12-06 23:14:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1054, Invalid=6778, Unknown=0, NotChecked=0, Total=7832 [2021-12-06 23:14:05,126 INFO L87 Difference]: Start difference. First operand 6621 states and 7387 transitions. Second operand has 89 states, 88 states have (on average 5.0227272727272725) internal successors, (442), 89 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:07,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:14:07,784 INFO L93 Difference]: Finished difference Result 10328 states and 11490 transitions. [2021-12-06 23:14:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 23:14:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 5.0227272727272725) internal successors, (442), 89 states have internal predecessors, (442), 0 states have call successors, (0), 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 190 [2021-12-06 23:14:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:14:07,790 INFO L225 Difference]: With dead ends: 10328 [2021-12-06 23:14:07,790 INFO L226 Difference]: Without dead ends: 10328 [2021-12-06 23:14:07,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3184, Invalid=12566, Unknown=0, NotChecked=0, Total=15750 [2021-12-06 23:14:07,791 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1512 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 3546 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:14:07,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1813 Invalid, 3646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3546 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:14:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10328 states. [2021-12-06 23:14:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10328 to 7687. [2021-12-06 23:14:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7687 states, 7685 states have (on average 1.1202342225113857) internal successors, (8609), 7686 states have internal predecessors, (8609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7687 states to 7687 states and 8609 transitions. [2021-12-06 23:14:07,854 INFO L78 Accepts]: Start accepts. Automaton has 7687 states and 8609 transitions. Word has length 190 [2021-12-06 23:14:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:14:07,854 INFO L470 AbstractCegarLoop]: Abstraction has 7687 states and 8609 transitions. [2021-12-06 23:14:07,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 5.0227272727272725) internal successors, (442), 89 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7687 states and 8609 transitions. [2021-12-06 23:14:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-06 23:14:07,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:14:07,857 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:14:07,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-12-06 23:14:08,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-12-06 23:14:08,058 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:14:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:14:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash -685373861, now seen corresponding path program 22 times [2021-12-06 23:14:08,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:14:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574135205] [2021-12-06 23:14:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:14:08,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:14:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 111 proven. 858 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:14:08,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:14:08,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574135205] [2021-12-06 23:14:08,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574135205] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:14:08,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458623047] [2021-12-06 23:14:08,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:14:08,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:08,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:14:08,847 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:14:08,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-12-06 23:14:09,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:14:09,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:14:09,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-06 23:14:09,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:14:09,054 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:14:09,054 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:14:10,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:14:10,117 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:14:10,117 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 16 treesize of output 22 [2021-12-06 23:14:10,135 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 7 treesize of output 3 [2021-12-06 23:14:15,850 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:14:15,850 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 17 treesize of output 17 [2021-12-06 23:14:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 609 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:14:16,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:14:18,614 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:14:18,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 22 [2021-12-06 23:14:18,620 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:14:18,620 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 33 [2021-12-06 23:14:18,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:14:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 641 proven. 329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:14:20,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458623047] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:14:20,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:14:20,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 37, 36] total 104 [2021-12-06 23:14:20,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87202765] [2021-12-06 23:14:20,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:14:20,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-12-06 23:14:20,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:14:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-12-06 23:14:20,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=798, Invalid=9910, Unknown=4, NotChecked=0, Total=10712 [2021-12-06 23:14:20,651 INFO L87 Difference]: Start difference. First operand 7687 states and 8609 transitions. Second operand has 104 states, 104 states have (on average 5.365384615384615) internal successors, (558), 104 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:14:28,324 INFO L93 Difference]: Finished difference Result 8966 states and 9979 transitions. [2021-12-06 23:14:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-12-06 23:14:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 5.365384615384615) internal successors, (558), 104 states have internal predecessors, (558), 0 states have call successors, (0), 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 192 [2021-12-06 23:14:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:14:28,329 INFO L225 Difference]: With dead ends: 8966 [2021-12-06 23:14:28,329 INFO L226 Difference]: Without dead ends: 8804 [2021-12-06 23:14:28,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 358 SyntacticMatches, 8 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7195 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=2170, Invalid=30405, Unknown=5, NotChecked=0, Total=32580 [2021-12-06 23:14:28,330 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 228 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:14:28,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 2110 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1638 Invalid, 0 Unknown, 160 Unchecked, 0.6s Time] [2021-12-06 23:14:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2021-12-06 23:14:28,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 8801. [2021-12-06 23:14:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8801 states, 8799 states have (on average 1.115354017501989) internal successors, (9814), 8800 states have internal predecessors, (9814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8801 states to 8801 states and 9814 transitions. [2021-12-06 23:14:28,385 INFO L78 Accepts]: Start accepts. Automaton has 8801 states and 9814 transitions. Word has length 192 [2021-12-06 23:14:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:14:28,385 INFO L470 AbstractCegarLoop]: Abstraction has 8801 states and 9814 transitions. [2021-12-06 23:14:28,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 5.365384615384615) internal successors, (558), 104 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8801 states and 9814 transitions. [2021-12-06 23:14:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-06 23:14:28,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:14:28,388 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:14:28,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-12-06 23:14:28,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-12-06 23:14:28,589 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:14:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:14:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash 49314168, now seen corresponding path program 23 times [2021-12-06 23:14:28,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:14:28,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012306176] [2021-12-06 23:14:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:14:28,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:14:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 190 proven. 824 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:14:28,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:14:28,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012306176] [2021-12-06 23:14:28,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012306176] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:14:28,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395067794] [2021-12-06 23:14:28,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:14:28,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:28,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:14:28,949 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:14:28,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-12-06 23:14:29,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-12-06 23:14:29,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:14:29,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 23:14:29,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:14:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 231 proven. 783 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:14:29,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:14:30,610 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 21 treesize of output 17 [2021-12-06 23:14:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 231 proven. 783 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:14:31,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395067794] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:14:31,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:14:31,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 70 [2021-12-06 23:14:31,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127518986] [2021-12-06 23:14:31,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:14:31,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-06 23:14:31,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:14:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-06 23:14:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=4299, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 23:14:31,124 INFO L87 Difference]: Start difference. First operand 8801 states and 9814 transitions. Second operand has 71 states, 70 states have (on average 6.542857142857143) internal successors, (458), 71 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:14:32,416 INFO L93 Difference]: Finished difference Result 15394 states and 17166 transitions. [2021-12-06 23:14:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:14:32,416 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 6.542857142857143) internal successors, (458), 71 states have internal predecessors, (458), 0 states have call successors, (0), 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 196 [2021-12-06 23:14:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:14:32,424 INFO L225 Difference]: With dead ends: 15394 [2021-12-06 23:14:32,424 INFO L226 Difference]: Without dead ends: 15394 [2021-12-06 23:14:32,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1917 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1556, Invalid=6100, Unknown=0, NotChecked=0, Total=7656 [2021-12-06 23:14:32,425 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 844 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:14:32,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 1721 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 23:14:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15394 states. [2021-12-06 23:14:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15394 to 9432. [2021-12-06 23:14:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9432 states, 9430 states have (on average 1.1155885471898197) internal successors, (10520), 9431 states have internal predecessors, (10520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9432 states to 9432 states and 10520 transitions. [2021-12-06 23:14:32,511 INFO L78 Accepts]: Start accepts. Automaton has 9432 states and 10520 transitions. Word has length 196 [2021-12-06 23:14:32,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:14:32,511 INFO L470 AbstractCegarLoop]: Abstraction has 9432 states and 10520 transitions. [2021-12-06 23:14:32,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 6.542857142857143) internal successors, (458), 71 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:32,511 INFO L276 IsEmpty]: Start isEmpty. Operand 9432 states and 10520 transitions. [2021-12-06 23:14:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-06 23:14:32,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:14:32,514 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:14:32,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-12-06 23:14:32,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:32,715 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:14:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:14:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1765752831, now seen corresponding path program 28 times [2021-12-06 23:14:32,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:14:32,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665008391] [2021-12-06 23:14:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:14:32,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:14:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 477 proven. 313 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 23:14:33,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:14:33,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665008391] [2021-12-06 23:14:33,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665008391] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:14:33,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785865841] [2021-12-06 23:14:33,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:14:33,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:14:33,074 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:14:33,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-12-06 23:14:33,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:14:33,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:14:33,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 23:14:33,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:14:33,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:14:33,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:14:33,272 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 10 treesize of output 8 [2021-12-06 23:14:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 559 proven. 231 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 23:14:34,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:14:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 499 proven. 291 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 23:14:34,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785865841] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:14:34,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:14:34,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30, 30] total 70 [2021-12-06 23:14:34,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174709743] [2021-12-06 23:14:34,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:14:34,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-06 23:14:34,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:14:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-06 23:14:34,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=4038, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 23:14:34,727 INFO L87 Difference]: Start difference. First operand 9432 states and 10520 transitions. Second operand has 70 states, 70 states have (on average 4.9714285714285715) internal successors, (348), 70 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:14:36,494 INFO L93 Difference]: Finished difference Result 17062 states and 18782 transitions. [2021-12-06 23:14:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 23:14:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.9714285714285715) internal successors, (348), 70 states have internal predecessors, (348), 0 states have call successors, (0), 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 197 [2021-12-06 23:14:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:14:36,504 INFO L225 Difference]: With dead ends: 17062 [2021-12-06 23:14:36,504 INFO L226 Difference]: Without dead ends: 17002 [2021-12-06 23:14:36,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2842 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2393, Invalid=9817, Unknown=0, NotChecked=0, Total=12210 [2021-12-06 23:14:36,505 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 411 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:14:36,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 783 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:14:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17002 states. [2021-12-06 23:14:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17002 to 10480. [2021-12-06 23:14:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10478 states have (on average 1.1166253101736974) internal successors, (11700), 10479 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 11700 transitions. [2021-12-06 23:14:36,611 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 11700 transitions. Word has length 197 [2021-12-06 23:14:36,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:14:36,611 INFO L470 AbstractCegarLoop]: Abstraction has 10480 states and 11700 transitions. [2021-12-06 23:14:36,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.9714285714285715) internal successors, (348), 70 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 11700 transitions. [2021-12-06 23:14:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-06 23:14:36,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:14:36,617 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:14:36,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-12-06 23:14:36,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:36,818 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:14:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:14:36,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1476217084, now seen corresponding path program 29 times [2021-12-06 23:14:36,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:14:36,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362875259] [2021-12-06 23:14:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:14:36,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:14:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 61 proven. 1050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:14:39,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:14:39,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362875259] [2021-12-06 23:14:39,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362875259] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:14:39,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618856906] [2021-12-06 23:14:39,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:14:39,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:39,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:14:39,022 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:14:39,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-12-06 23:14:40,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-12-06 23:14:40,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:14:40,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 97 conjunts are in the unsatisfiable core [2021-12-06 23:14:40,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:14:40,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:14:41,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:14:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 61 proven. 774 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 23:14:41,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:14:41,394 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 13 [2021-12-06 23:14:41,395 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 26 treesize of output 22 [2021-12-06 23:14:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 61 proven. 774 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 23:14:41,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618856906] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:14:41,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:14:41,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 34, 34] total 73 [2021-12-06 23:14:41,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282047172] [2021-12-06 23:14:41,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:14:41,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-12-06 23:14:41,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:14:41,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-12-06 23:14:41,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=5064, Unknown=0, NotChecked=0, Total=5256 [2021-12-06 23:14:41,704 INFO L87 Difference]: Start difference. First operand 10480 states and 11700 transitions. Second operand has 73 states, 73 states have (on average 3.904109589041096) internal successors, (285), 73 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:14:59,092 INFO L93 Difference]: Finished difference Result 35414 states and 39419 transitions. [2021-12-06 23:14:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-12-06 23:14:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.904109589041096) internal successors, (285), 73 states have internal predecessors, (285), 0 states have call successors, (0), 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 201 [2021-12-06 23:14:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:14:59,117 INFO L225 Difference]: With dead ends: 35414 [2021-12-06 23:14:59,117 INFO L226 Difference]: Without dead ends: 35336 [2021-12-06 23:14:59,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 377 SyntacticMatches, 3 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 8829 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1895, Invalid=37507, Unknown=0, NotChecked=0, Total=39402 [2021-12-06 23:14:59,119 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 3816 mSDsluCounter, 21687 mSDsCounter, 0 mSdLazyCounter, 21160 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3816 SdHoareTripleChecker+Valid, 22160 SdHoareTripleChecker+Invalid, 22264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 21160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 882 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:14:59,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3816 Valid, 22160 Invalid, 22264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [222 Valid, 21160 Invalid, 0 Unknown, 882 Unchecked, 8.0s Time] [2021-12-06 23:14:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35336 states. [2021-12-06 23:14:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35336 to 11632. [2021-12-06 23:14:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 11630 states have (on average 1.1175408426483233) internal successors, (12997), 11631 states have internal predecessors, (12997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 12997 transitions. [2021-12-06 23:14:59,290 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 12997 transitions. Word has length 201 [2021-12-06 23:14:59,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:14:59,291 INFO L470 AbstractCegarLoop]: Abstraction has 11632 states and 12997 transitions. [2021-12-06 23:14:59,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.904109589041096) internal successors, (285), 73 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:14:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 12997 transitions. [2021-12-06 23:14:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-06 23:14:59,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:14:59,295 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:14:59,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-12-06 23:14:59,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:59,497 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:14:59,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:14:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1991375554, now seen corresponding path program 3 times [2021-12-06 23:14:59,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:14:59,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864294400] [2021-12-06 23:14:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:14:59,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:14:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:14:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 118 proven. 928 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:14:59,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:14:59,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864294400] [2021-12-06 23:14:59,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864294400] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:14:59,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172907680] [2021-12-06 23:14:59,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:14:59,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:14:59,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:14:59,992 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:14:59,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-12-06 23:15:00,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-12-06 23:15:00,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:15:00,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 111 conjunts are in the unsatisfiable core [2021-12-06 23:15:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:15:00,692 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 10 treesize of output 8 [2021-12-06 23:15:01,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:15:01,208 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 17 treesize of output 19 [2021-12-06 23:15:01,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:15:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 118 proven. 935 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 23:15:01,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:15:01,828 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5363 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_5363) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 11)) 0)) is different from false [2021-12-06 23:15:01,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:15:01,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:15:01,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:15:01,835 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 37 treesize of output 37 [2021-12-06 23:15:01,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:15:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 118 proven. 928 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 23:15:02,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172907680] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:15:02,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:15:02,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32, 31] total 53 [2021-12-06 23:15:02,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090516187] [2021-12-06 23:15:02,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:15:02,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 23:15:02,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:02,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 23:15:02,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2512, Unknown=1, NotChecked=100, Total=2756 [2021-12-06 23:15:02,138 INFO L87 Difference]: Start difference. First operand 11632 states and 12997 transitions. Second operand has 53 states, 53 states have (on average 5.39622641509434) internal successors, (286), 53 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:15:04,122 INFO L93 Difference]: Finished difference Result 15404 states and 17158 transitions. [2021-12-06 23:15:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 23:15:04,122 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.39622641509434) internal successors, (286), 53 states have internal predecessors, (286), 0 states have call successors, (0), 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 203 [2021-12-06 23:15:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:15:04,128 INFO L225 Difference]: With dead ends: 15404 [2021-12-06 23:15:04,128 INFO L226 Difference]: Without dead ends: 9427 [2021-12-06 23:15:04,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 381 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=302, Invalid=5863, Unknown=1, NotChecked=154, Total=6320 [2021-12-06 23:15:04,128 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 213 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 3895 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 4168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:15:04,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2552 Invalid, 4168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3895 Invalid, 0 Unknown, 247 Unchecked, 1.1s Time] [2021-12-06 23:15:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9427 states. [2021-12-06 23:15:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9427 to 9424. [2021-12-06 23:15:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9424 states, 9422 states have (on average 1.1201443430269582) internal successors, (10554), 9423 states have internal predecessors, (10554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9424 states to 9424 states and 10554 transitions. [2021-12-06 23:15:04,192 INFO L78 Accepts]: Start accepts. Automaton has 9424 states and 10554 transitions. Word has length 203 [2021-12-06 23:15:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:04,192 INFO L470 AbstractCegarLoop]: Abstraction has 9424 states and 10554 transitions. [2021-12-06 23:15:04,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.39622641509434) internal successors, (286), 53 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 9424 states and 10554 transitions. [2021-12-06 23:15:04,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-06 23:15:04,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:04,195 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:15:04,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-12-06 23:15:04,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-12-06 23:15:04,396 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:15:04,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:15:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1500829639, now seen corresponding path program 30 times [2021-12-06 23:15:04,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:15:04,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080737778] [2021-12-06 23:15:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:15:04,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:15:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 231 proven. 653 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 23:15:04,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:15:04,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080737778] [2021-12-06 23:15:04,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080737778] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:15:04,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275723402] [2021-12-06 23:15:04,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:15:04,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:15:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:15:04,887 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:15:04,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-12-06 23:15:08,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-12-06 23:15:08,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:15:08,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-06 23:15:08,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:15:08,395 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:15:08,395 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:15:08,623 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 15 treesize of output 11 [2021-12-06 23:15:08,803 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:15:08,803 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 19 treesize of output 19 [2021-12-06 23:15:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-12-06 23:15:08,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:15:09,948 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 13 treesize of output 11 [2021-12-06 23:15:09,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:15:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-12-06 23:15:10,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275723402] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:15:10,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:15:10,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10, 10] total 49 [2021-12-06 23:15:10,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807327] [2021-12-06 23:15:10,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:15:10,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-06 23:15:10,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-06 23:15:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=2099, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 23:15:10,578 INFO L87 Difference]: Start difference. First operand 9424 states and 10554 transitions. Second operand has 50 states, 49 states have (on average 4.469387755102041) internal successors, (219), 50 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:15:19,241 INFO L93 Difference]: Finished difference Result 20151 states and 22331 transitions. [2021-12-06 23:15:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2021-12-06 23:15:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.469387755102041) internal successors, (219), 50 states have internal predecessors, (219), 0 states have call successors, (0), 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 205 [2021-12-06 23:15:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:15:19,254 INFO L225 Difference]: With dead ends: 20151 [2021-12-06 23:15:19,254 INFO L226 Difference]: Without dead ends: 20151 [2021-12-06 23:15:19,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12258 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=7733, Invalid=38707, Unknown=0, NotChecked=0, Total=46440 [2021-12-06 23:15:19,256 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1735 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 7341 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 8179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 7341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 633 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:15:19,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 3087 Invalid, 8179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 7341 Invalid, 0 Unknown, 633 Unchecked, 2.6s Time] [2021-12-06 23:15:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2021-12-06 23:15:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 10804. [2021-12-06 23:15:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10804 states, 10802 states have (on average 1.12275504536197) internal successors, (12128), 10803 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 12128 transitions. [2021-12-06 23:15:19,371 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 12128 transitions. Word has length 205 [2021-12-06 23:15:19,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:19,371 INFO L470 AbstractCegarLoop]: Abstraction has 10804 states and 12128 transitions. [2021-12-06 23:15:19,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.469387755102041) internal successors, (219), 50 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 12128 transitions. [2021-12-06 23:15:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 23:15:19,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:19,375 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:15:19,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-12-06 23:15:19,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-12-06 23:15:19,576 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:15:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:15:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1762919058, now seen corresponding path program 24 times [2021-12-06 23:15:19,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:15:19,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335866429] [2021-12-06 23:15:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:15:19,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:15:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 121 proven. 1026 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:15:20,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:15:20,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335866429] [2021-12-06 23:15:20,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335866429] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:15:20,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726216600] [2021-12-06 23:15:20,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:15:20,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:15:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:15:20,160 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:15:20,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-12-06 23:15:20,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-12-06 23:15:20,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:15:20,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-06 23:15:20,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:15:20,811 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 10 treesize of output 8 [2021-12-06 23:15:21,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:15:21,336 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 17 treesize of output 19 [2021-12-06 23:15:21,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:15:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 121 proven. 1026 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:15:21,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:15:21,867 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5559 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_5559) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 12)) 0)) is different from false [2021-12-06 23:15:21,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:15:21,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:15:21,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:15:21,875 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 37 treesize of output 37 [2021-12-06 23:15:21,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:15:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 121 proven. 1026 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:15:22,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726216600] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:15:22,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:15:22,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 55 [2021-12-06 23:15:22,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747558391] [2021-12-06 23:15:22,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:15:22,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-06 23:15:22,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-06 23:15:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2718, Unknown=1, NotChecked=104, Total=2970 [2021-12-06 23:15:22,141 INFO L87 Difference]: Start difference. First operand 10804 states and 12128 transitions. Second operand has 55 states, 55 states have (on average 5.381818181818182) internal successors, (296), 55 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:15:24,101 INFO L93 Difference]: Finished difference Result 20745 states and 23251 transitions. [2021-12-06 23:15:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 23:15:24,102 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.381818181818182) internal successors, (296), 55 states have internal predecessors, (296), 0 states have call successors, (0), 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 207 [2021-12-06 23:15:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:15:24,112 INFO L225 Difference]: With dead ends: 20745 [2021-12-06 23:15:24,113 INFO L226 Difference]: Without dead ends: 16104 [2021-12-06 23:15:24,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 400 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=335, Invalid=6310, Unknown=1, NotChecked=160, Total=6806 [2021-12-06 23:15:24,113 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 537 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 4864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:15:24,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 3327 Invalid, 4864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4460 Invalid, 0 Unknown, 363 Unchecked, 1.2s Time] [2021-12-06 23:15:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16104 states. [2021-12-06 23:15:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16104 to 15913. [2021-12-06 23:15:24,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15913 states, 15911 states have (on average 1.1257620514109736) internal successors, (17912), 15912 states have internal predecessors, (17912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15913 states to 15913 states and 17912 transitions. [2021-12-06 23:15:24,225 INFO L78 Accepts]: Start accepts. Automaton has 15913 states and 17912 transitions. Word has length 207 [2021-12-06 23:15:24,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:24,225 INFO L470 AbstractCegarLoop]: Abstraction has 15913 states and 17912 transitions. [2021-12-06 23:15:24,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.381818181818182) internal successors, (296), 55 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:24,225 INFO L276 IsEmpty]: Start isEmpty. Operand 15913 states and 17912 transitions. [2021-12-06 23:15:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 23:15:24,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:24,230 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 12, 11, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:15:24,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-12-06 23:15:24,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-12-06 23:15:24,431 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:15:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:15:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2087995757, now seen corresponding path program 13 times [2021-12-06 23:15:24,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:15:24,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302743930] [2021-12-06 23:15:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:15:24,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:15:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 14 proven. 1139 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:15:26,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:15:26,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302743930] [2021-12-06 23:15:26,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302743930] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:15:26,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468941286] [2021-12-06 23:15:26,546 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:15:26,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:15:26,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:15:26,547 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:15:26,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-12-06 23:15:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:26,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-06 23:15:26,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:15:27,389 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 14 treesize of output 10 [2021-12-06 23:15:29,054 INFO L354 Elim1Store]: treesize reduction 8, result has 27.3 percent of original size [2021-12-06 23:15:29,054 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 18 treesize of output 10 [2021-12-06 23:15:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 66 proven. 809 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-06 23:15:29,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:15:30,184 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 13 [2021-12-06 23:15:30,185 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 26 treesize of output 22 [2021-12-06 23:15:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 66 proven. 809 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-06 23:15:30,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468941286] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:15:30,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:15:30,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 32, 32] total 98 [2021-12-06 23:15:30,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828692644] [2021-12-06 23:15:30,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:15:30,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-12-06 23:15:30,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-12-06 23:15:30,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=9246, Unknown=0, NotChecked=0, Total=9506 [2021-12-06 23:15:30,486 INFO L87 Difference]: Start difference. First operand 15913 states and 17912 transitions. Second operand has 98 states, 98 states have (on average 4.612244897959184) internal successors, (452), 98 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:40,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:15:40,753 INFO L93 Difference]: Finished difference Result 17185 states and 19235 transitions. [2021-12-06 23:15:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-12-06 23:15:40,753 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.612244897959184) internal successors, (452), 98 states have internal predecessors, (452), 0 states have call successors, (0), 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 208 [2021-12-06 23:15:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:15:40,762 INFO L225 Difference]: With dead ends: 17185 [2021-12-06 23:15:40,762 INFO L226 Difference]: Without dead ends: 15212 [2021-12-06 23:15:40,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 369 SyntacticMatches, 3 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 14 DeprecatedPredicates, 6617 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=1049, Invalid=34107, Unknown=0, NotChecked=0, Total=35156 [2021-12-06 23:15:40,773 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 407 mSDsluCounter, 16322 mSDsCounter, 0 mSdLazyCounter, 9567 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 16604 SdHoareTripleChecker+Invalid, 16987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 9567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7349 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:15:40,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 16604 Invalid, 16987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 9567 Invalid, 0 Unknown, 7349 Unchecked, 3.5s Time] [2021-12-06 23:15:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15212 states. [2021-12-06 23:15:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15212 to 11999. [2021-12-06 23:15:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11999 states, 11997 states have (on average 1.1227806951737935) internal successors, (13470), 11998 states have internal predecessors, (13470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11999 states to 11999 states and 13470 transitions. [2021-12-06 23:15:40,860 INFO L78 Accepts]: Start accepts. Automaton has 11999 states and 13470 transitions. Word has length 208 [2021-12-06 23:15:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:40,861 INFO L470 AbstractCegarLoop]: Abstraction has 11999 states and 13470 transitions. [2021-12-06 23:15:40,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.612244897959184) internal successors, (452), 98 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11999 states and 13470 transitions. [2021-12-06 23:15:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-06 23:15:40,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:40,865 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:15:40,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-12-06 23:15:41,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-12-06 23:15:41,066 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:15:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:15:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash 70996437, now seen corresponding path program 25 times [2021-12-06 23:15:41,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:15:41,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497644713] [2021-12-06 23:15:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:15:41,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:15:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 231 proven. 965 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:15:41,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:15:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497644713] [2021-12-06 23:15:41,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497644713] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:15:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153236409] [2021-12-06 23:15:41,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:15:41,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:15:41,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:15:41,498 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:15:41,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-12-06 23:15:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:41,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-06 23:15:41,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:15:41,745 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:15:41,745 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:15:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 276 proven. 921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:15:45,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:15:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 325 proven. 872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:15:47,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153236409] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:15:47,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:15:47,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 35, 35] total 98 [2021-12-06 23:15:47,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175898722] [2021-12-06 23:15:47,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:15:47,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-12-06 23:15:47,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-12-06 23:15:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=8879, Unknown=0, NotChecked=0, Total=9702 [2021-12-06 23:15:47,590 INFO L87 Difference]: Start difference. First operand 11999 states and 13470 transitions. Second operand has 99 states, 98 states have (on average 6.377551020408164) internal successors, (625), 99 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:15:49,162 INFO L93 Difference]: Finished difference Result 12681 states and 14220 transitions. [2021-12-06 23:15:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 23:15:49,162 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 6.377551020408164) internal successors, (625), 99 states have internal predecessors, (625), 0 states have call successors, (0), 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 211 [2021-12-06 23:15:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:15:49,169 INFO L225 Difference]: With dead ends: 12681 [2021-12-06 23:15:49,170 INFO L226 Difference]: Without dead ends: 12681 [2021-12-06 23:15:49,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 380 SyntacticMatches, 10 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4404 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1540, Invalid=14716, Unknown=0, NotChecked=0, Total=16256 [2021-12-06 23:15:49,170 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 302 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:15:49,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 2897 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 512 Invalid, 0 Unknown, 106 Unchecked, 0.2s Time] [2021-12-06 23:15:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12681 states. [2021-12-06 23:15:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12681 to 12669. [2021-12-06 23:15:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12669 states, 12667 states have (on average 1.1226020367885057) internal successors, (14220), 12668 states have internal predecessors, (14220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12669 states to 12669 states and 14220 transitions. [2021-12-06 23:15:49,259 INFO L78 Accepts]: Start accepts. Automaton has 12669 states and 14220 transitions. Word has length 211 [2021-12-06 23:15:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:49,269 INFO L470 AbstractCegarLoop]: Abstraction has 12669 states and 14220 transitions. [2021-12-06 23:15:49,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 6.377551020408164) internal successors, (625), 99 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12669 states and 14220 transitions. [2021-12-06 23:15:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-06 23:15:49,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:49,273 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:15:49,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-12-06 23:15:49,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-12-06 23:15:49,475 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:15:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:15:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -29197968, now seen corresponding path program 14 times [2021-12-06 23:15:49,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:15:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215140007] [2021-12-06 23:15:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:15:49,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:15:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 565 proven. 456 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-12-06 23:15:49,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:15:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215140007] [2021-12-06 23:15:49,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215140007] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:15:49,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043444330] [2021-12-06 23:15:49,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:15:49,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:15:49,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:15:49,872 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:15:49,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-12-06 23:15:50,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:15:50,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:15:50,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 23:15:50,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:15:50,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:15:50,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:15:50,089 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 10 treesize of output 8 [2021-12-06 23:15:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 567 proven. 454 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-12-06 23:15:51,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:15:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 566 proven. 455 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2021-12-06 23:15:51,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043444330] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:15:51,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:15:51,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32, 32] total 75 [2021-12-06 23:15:51,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484609749] [2021-12-06 23:15:51,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:15:51,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-12-06 23:15:51,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-12-06 23:15:51,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=860, Invalid=4690, Unknown=0, NotChecked=0, Total=5550 [2021-12-06 23:15:51,911 INFO L87 Difference]: Start difference. First operand 12669 states and 14220 transitions. Second operand has 75 states, 75 states have (on average 5.24) internal successors, (393), 75 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:15:53,316 INFO L93 Difference]: Finished difference Result 14251 states and 15819 transitions. [2021-12-06 23:15:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 23:15:53,316 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.24) internal successors, (393), 75 states have internal predecessors, (393), 0 states have call successors, (0), 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 219 [2021-12-06 23:15:53,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:15:53,321 INFO L225 Difference]: With dead ends: 14251 [2021-12-06 23:15:53,321 INFO L226 Difference]: Without dead ends: 9353 [2021-12-06 23:15:53,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2652 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1878, Invalid=8628, Unknown=0, NotChecked=0, Total=10506 [2021-12-06 23:15:53,322 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 286 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:15:53,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1013 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:15:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9353 states. [2021-12-06 23:15:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9353 to 9350. [2021-12-06 23:15:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9350 states, 9348 states have (on average 1.1195977749251176) internal successors, (10466), 9349 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 10466 transitions. [2021-12-06 23:15:53,380 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 10466 transitions. Word has length 219 [2021-12-06 23:15:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:53,381 INFO L470 AbstractCegarLoop]: Abstraction has 9350 states and 10466 transitions. [2021-12-06 23:15:53,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.24) internal successors, (393), 75 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 10466 transitions. [2021-12-06 23:15:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-06 23:15:53,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:53,392 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:15:53,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-12-06 23:15:53,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-12-06 23:15:53,593 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:15:53,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:15:53,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1151024661, now seen corresponding path program 26 times [2021-12-06 23:15:53,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:15:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809321487] [2021-12-06 23:15:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:15:53,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:15:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:15:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 131 proven. 1209 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:15:54,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:15:54,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809321487] [2021-12-06 23:15:54,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809321487] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:15:54,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276907036] [2021-12-06 23:15:54,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:15:54,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:15:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:15:54,586 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:15:54,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-12-06 23:15:54,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:15:54,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:15:54,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 117 conjunts are in the unsatisfiable core [2021-12-06 23:15:54,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:15:54,823 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 10 treesize of output 8 [2021-12-06 23:15:55,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:15:55,553 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 17 treesize of output 19 [2021-12-06 23:15:55,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:15:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 131 proven. 1209 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:15:55,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:15:56,151 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5943 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_5943) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 13)) 0)) is different from false [2021-12-06 23:15:56,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:15:56,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:15:56,161 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:15:56,161 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 37 treesize of output 37 [2021-12-06 23:15:56,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:15:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1341 backedges. 131 proven. 1209 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:15:56,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276907036] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:15:56,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:15:56,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 35, 35] total 63 [2021-12-06 23:15:56,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062587] [2021-12-06 23:15:56,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:15:56,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-12-06 23:15:56,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:15:56,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-12-06 23:15:56,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=3639, Unknown=1, NotChecked=120, Total=3906 [2021-12-06 23:15:56,486 INFO L87 Difference]: Start difference. First operand 9350 states and 10466 transitions. Second operand has 63 states, 63 states have (on average 5.0) internal successors, (315), 63 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:15:59,733 INFO L93 Difference]: Finished difference Result 18002 states and 20118 transitions. [2021-12-06 23:15:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 23:15:59,734 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.0) internal successors, (315), 63 states have internal predecessors, (315), 0 states have call successors, (0), 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 222 [2021-12-06 23:15:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:15:59,742 INFO L225 Difference]: With dead ends: 18002 [2021-12-06 23:15:59,742 INFO L226 Difference]: Without dead ends: 13085 [2021-12-06 23:15:59,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 418 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=319, Invalid=8239, Unknown=2, NotChecked=182, Total=8742 [2021-12-06 23:15:59,743 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 132 mSDsluCounter, 4904 mSDsCounter, 0 mSdLazyCounter, 7127 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 5005 SdHoareTripleChecker+Invalid, 7520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 376 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:15:59,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 5005 Invalid, 7520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 7127 Invalid, 0 Unknown, 376 Unchecked, 2.1s Time] [2021-12-06 23:15:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13085 states. [2021-12-06 23:15:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13085 to 12978. [2021-12-06 23:15:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12978 states, 12976 states have (on average 1.122919235511714) internal successors, (14571), 12977 states have internal predecessors, (14571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12978 states to 12978 states and 14571 transitions. [2021-12-06 23:15:59,837 INFO L78 Accepts]: Start accepts. Automaton has 12978 states and 14571 transitions. Word has length 222 [2021-12-06 23:15:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:15:59,837 INFO L470 AbstractCegarLoop]: Abstraction has 12978 states and 14571 transitions. [2021-12-06 23:15:59,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.0) internal successors, (315), 63 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:15:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 12978 states and 14571 transitions. [2021-12-06 23:15:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-06 23:15:59,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:15:59,841 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:15:59,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-12-06 23:16:00,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-12-06 23:16:00,042 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:16:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:16:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash -231343053, now seen corresponding path program 15 times [2021-12-06 23:16:00,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:16:00,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676114965] [2021-12-06 23:16:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:16:00,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:16:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 71 proven. 1273 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:16:01,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:16:01,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676114965] [2021-12-06 23:16:01,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676114965] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:16:01,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21028221] [2021-12-06 23:16:01,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:16:01,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:16:01,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:16:01,215 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:16:01,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-12-06 23:16:05,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-12-06 23:16:05,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:16:05,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 23:16:05,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:16:05,246 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:16:05,246 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:16:05,519 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 14 treesize of output 10 [2021-12-06 23:16:07,269 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:16:07,269 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 18 treesize of output 18 [2021-12-06 23:16:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 269 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-12-06 23:16:07,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:16:08,650 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 13 treesize of output 11 [2021-12-06 23:16:08,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 23:16:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 269 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-12-06 23:16:08,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21028221] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:16:08,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:16:08,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 10, 10] total 66 [2021-12-06 23:16:08,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130897680] [2021-12-06 23:16:08,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:16:08,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-06 23:16:08,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:16:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-06 23:16:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=4085, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 23:16:08,974 INFO L87 Difference]: Start difference. First operand 12978 states and 14571 transitions. Second operand has 66 states, 66 states have (on average 4.575757575757576) internal successors, (302), 66 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) [2021-12-06 23:16:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:16:16,705 INFO L93 Difference]: Finished difference Result 13229 states and 14725 transitions. [2021-12-06 23:16:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-12-06 23:16:16,705 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.575757575757576) internal successors, (302), 66 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) Word has length 223 [2021-12-06 23:16:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:16:16,715 INFO L225 Difference]: With dead ends: 13229 [2021-12-06 23:16:16,716 INFO L226 Difference]: Without dead ends: 9403 [2021-12-06 23:16:16,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8119 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1809, Invalid=30053, Unknown=0, NotChecked=0, Total=31862 [2021-12-06 23:16:16,717 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 167 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 4772 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 427 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:16:16,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2651 Invalid, 5370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4772 Invalid, 0 Unknown, 427 Unchecked, 1.6s Time] [2021-12-06 23:16:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9403 states. [2021-12-06 23:16:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9403 to 6662. [2021-12-06 23:16:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6662 states, 6661 states have (on average 1.1088425161387179) internal successors, (7386), 6661 states have internal predecessors, (7386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:16:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6662 states to 6662 states and 7386 transitions. [2021-12-06 23:16:16,765 INFO L78 Accepts]: Start accepts. Automaton has 6662 states and 7386 transitions. Word has length 223 [2021-12-06 23:16:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:16:16,765 INFO L470 AbstractCegarLoop]: Abstraction has 6662 states and 7386 transitions. [2021-12-06 23:16:16,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.575757575757576) internal successors, (302), 66 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) [2021-12-06 23:16:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand 6662 states and 7386 transitions. [2021-12-06 23:16:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 23:16:16,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:16:16,768 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:16:16,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-12-06 23:16:16,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-12-06 23:16:16,969 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:16:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:16:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 590946418, now seen corresponding path program 27 times [2021-12-06 23:16:16,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:16:16,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588824436] [2021-12-06 23:16:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:16:16,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:16:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 276 proven. 1117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:16:17,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:16:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588824436] [2021-12-06 23:16:17,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588824436] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:16:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061672902] [2021-12-06 23:16:17,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:16:17,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:16:17,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:16:17,423 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:16:17,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-12-06 23:16:18,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-06 23:16:18,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:16:18,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-06 23:16:18,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:16:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 325 proven. 1068 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:16:19,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:16:20,191 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 15 treesize of output 11 [2021-12-06 23:16:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 378 proven. 1015 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:16:20,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061672902] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:16:20,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:16:20,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 34, 34] total 83 [2021-12-06 23:16:20,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061885780] [2021-12-06 23:16:20,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:16:20,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-12-06 23:16:20,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:16:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-12-06 23:16:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=945, Invalid=6027, Unknown=0, NotChecked=0, Total=6972 [2021-12-06 23:16:20,862 INFO L87 Difference]: Start difference. First operand 6662 states and 7386 transitions. Second operand has 84 states, 83 states have (on average 7.337349397590361) internal successors, (609), 84 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:16:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:16:22,938 INFO L93 Difference]: Finished difference Result 8224 states and 9063 transitions. [2021-12-06 23:16:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 23:16:22,939 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 7.337349397590361) internal successors, (609), 84 states have internal predecessors, (609), 0 states have call successors, (0), 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 226 [2021-12-06 23:16:22,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:16:22,943 INFO L225 Difference]: With dead ends: 8224 [2021-12-06 23:16:22,943 INFO L226 Difference]: Without dead ends: 8224 [2021-12-06 23:16:22,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 399 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2728 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2739, Invalid=10601, Unknown=0, NotChecked=0, Total=13340 [2021-12-06 23:16:22,944 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 3586 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3586 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:16:22,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3586 Valid, 1305 Invalid, 3343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:16:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8224 states. [2021-12-06 23:16:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8224 to 7126. [2021-12-06 23:16:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 1.1087719298245613) internal successors, (7900), 7125 states have internal predecessors, (7900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:16:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 7900 transitions. [2021-12-06 23:16:23,003 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 7900 transitions. Word has length 226 [2021-12-06 23:16:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:16:23,003 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 7900 transitions. [2021-12-06 23:16:23,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 7.337349397590361) internal successors, (609), 84 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:16:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 7900 transitions. [2021-12-06 23:16:23,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-06 23:16:23,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:16:23,006 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:16:23,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-12-06 23:16:23,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:16:23,207 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:16:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:16:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2138891432, now seen corresponding path program 28 times [2021-12-06 23:16:23,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:16:23,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107639931] [2021-12-06 23:16:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:16:23,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:16:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:16:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1549 backedges. 141 proven. 1407 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:16:23,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:16:23,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107639931] [2021-12-06 23:16:23,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107639931] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:16:23,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634815725] [2021-12-06 23:16:23,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:16:23,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:16:23,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:16:23,864 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:16:23,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-12-06 23:16:24,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:16:24,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:16:24,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-06 23:16:24,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:16:24,151 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:16:24,152 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:16:24,160 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 10 treesize of output 8 [2021-12-06 23:16:25,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:16:25,101 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 17 treesize of output 19 [2021-12-06 23:17:04,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:04,965 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 18 treesize of output 18 [2021-12-06 23:17:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1549 backedges. 1075 proven. 462 refuted. 11 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:05,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:17:07,272 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:07,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2021-12-06 23:17:07,276 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:07,276 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 33 [2021-12-06 23:17:07,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 23:17:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1549 backedges. 1072 proven. 476 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:09,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634815725] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:17:09,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:17:09,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 37] total 106 [2021-12-06 23:17:09,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700065690] [2021-12-06 23:17:09,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:17:09,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-12-06 23:17:09,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:17:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-12-06 23:17:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=10219, Unknown=2, NotChecked=0, Total=11130 [2021-12-06 23:17:09,398 INFO L87 Difference]: Start difference. First operand 7126 states and 7900 transitions. Second operand has 106 states, 106 states have (on average 6.537735849056604) internal successors, (693), 106 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:17:15,685 INFO L93 Difference]: Finished difference Result 13743 states and 15220 transitions. [2021-12-06 23:17:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 23:17:15,686 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 6.537735849056604) internal successors, (693), 106 states have internal predecessors, (693), 0 states have call successors, (0), 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 237 [2021-12-06 23:17:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:17:15,690 INFO L225 Difference]: With dead ends: 13743 [2021-12-06 23:17:15,690 INFO L226 Difference]: Without dead ends: 7133 [2021-12-06 23:17:15,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3204 ImplicationChecksByTransitivity, 46.6s TimeCoverageRelationStatistics Valid=1583, Invalid=18155, Unknown=2, NotChecked=0, Total=19740 [2021-12-06 23:17:15,691 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 161 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:17:15,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 4475 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1896 Invalid, 0 Unknown, 195 Unchecked, 0.6s Time] [2021-12-06 23:17:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7133 states. [2021-12-06 23:17:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7133 to 7130. [2021-12-06 23:17:15,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 7129 states have (on average 1.10871089914434) internal successors, (7904), 7129 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 7904 transitions. [2021-12-06 23:17:15,737 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 7904 transitions. Word has length 237 [2021-12-06 23:17:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:17:15,737 INFO L470 AbstractCegarLoop]: Abstraction has 7130 states and 7904 transitions. [2021-12-06 23:17:15,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 6.537735849056604) internal successors, (693), 106 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 7904 transitions. [2021-12-06 23:17:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-06 23:17:15,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:17:15,740 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:17:15,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-12-06 23:17:15,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:17:15,941 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:17:15,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:17:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1407020197, now seen corresponding path program 29 times [2021-12-06 23:17:15,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:17:15,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841095413] [2021-12-06 23:17:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:17:15,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:17:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:17:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 325 proven. 1280 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:16,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:17:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841095413] [2021-12-06 23:17:16,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841095413] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:17:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667757132] [2021-12-06 23:17:16,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:17:16,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:17:16,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:17:16,481 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:17:16,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-12-06 23:17:17,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-12-06 23:17:17,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:17:17,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 113 conjunts are in the unsatisfiable core [2021-12-06 23:17:17,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:17:17,169 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:17:17,169 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:17:17,178 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 10 treesize of output 8 [2021-12-06 23:17:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 378 proven. 1227 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:18,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:17:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 435 proven. 1170 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:20,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667757132] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:17:20,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:17:20,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 33] total 99 [2021-12-06 23:17:20,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351742331] [2021-12-06 23:17:20,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:17:20,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-12-06 23:17:20,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:17:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-12-06 23:17:20,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1075, Invalid=8825, Unknown=0, NotChecked=0, Total=9900 [2021-12-06 23:17:20,784 INFO L87 Difference]: Start difference. First operand 7130 states and 7904 transitions. Second operand has 100 states, 99 states have (on average 7.222222222222222) internal successors, (715), 100 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:17:22,527 INFO L93 Difference]: Finished difference Result 8047 states and 8921 transitions. [2021-12-06 23:17:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 23:17:22,527 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 7.222222222222222) internal successors, (715), 100 states have internal predecessors, (715), 0 states have call successors, (0), 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 241 [2021-12-06 23:17:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:17:22,532 INFO L225 Difference]: With dead ends: 8047 [2021-12-06 23:17:22,532 INFO L226 Difference]: Without dead ends: 8047 [2021-12-06 23:17:22,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3569 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2183, Invalid=11859, Unknown=0, NotChecked=0, Total=14042 [2021-12-06 23:17:22,533 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 1023 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 4033 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 4125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 4033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:17:22,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 2453 Invalid, 4125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 4033 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 23:17:22,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8047 states. [2021-12-06 23:17:22,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8047 to 7594. [2021-12-06 23:17:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.1086527064401421) internal successors, (8418), 7593 states have internal predecessors, (8418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 8418 transitions. [2021-12-06 23:17:22,588 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 8418 transitions. Word has length 241 [2021-12-06 23:17:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:17:22,588 INFO L470 AbstractCegarLoop]: Abstraction has 7594 states and 8418 transitions. [2021-12-06 23:17:22,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 7.222222222222222) internal successors, (715), 100 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 8418 transitions. [2021-12-06 23:17:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-12-06 23:17:22,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:17:22,591 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:17:22,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-12-06 23:17:22,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2021-12-06 23:17:22,792 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:17:22,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:17:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1739723569, now seen corresponding path program 30 times [2021-12-06 23:17:22,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:17:22,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246229570] [2021-12-06 23:17:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:17:22,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:17:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:17:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 151 proven. 1620 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:23,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:17:23,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246229570] [2021-12-06 23:17:23,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246229570] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:17:23,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984336263] [2021-12-06 23:17:23,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:17:23,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:17:23,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:17:23,939 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:17:23,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-12-06 23:17:26,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-12-06 23:17:26,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:17:26,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 127 conjunts are in the unsatisfiable core [2021-12-06 23:17:26,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:17:26,059 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 10 treesize of output 8 [2021-12-06 23:17:26,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:17:26,924 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 17 treesize of output 19 [2021-12-06 23:17:27,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:17:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 151 proven. 1620 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:27,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:17:27,602 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6401 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_6401) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 15)) 0)) is different from false [2021-12-06 23:17:27,605 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:27,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:17:27,609 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:27,609 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 37 treesize of output 37 [2021-12-06 23:17:27,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:17:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 151 proven. 1620 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:27,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984336263] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:17:27,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:17:27,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 39, 39] total 69 [2021-12-06 23:17:27,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316833040] [2021-12-06 23:17:27,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:17:27,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 23:17:27,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:17:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 23:17:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=4401, Unknown=1, NotChecked=132, Total=4692 [2021-12-06 23:17:27,976 INFO L87 Difference]: Start difference. First operand 7594 states and 8418 transitions. Second operand has 69 states, 69 states have (on average 5.115942028985507) internal successors, (353), 69 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:17:32,729 INFO L93 Difference]: Finished difference Result 14675 states and 16252 transitions. [2021-12-06 23:17:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 23:17:32,730 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 5.115942028985507) internal successors, (353), 69 states have internal predecessors, (353), 0 states have call successors, (0), 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 252 [2021-12-06 23:17:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:17:32,734 INFO L225 Difference]: With dead ends: 14675 [2021-12-06 23:17:32,734 INFO L226 Difference]: Without dead ends: 7601 [2021-12-06 23:17:32,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 476 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=427, Invalid=13617, Unknown=2, NotChecked=234, Total=14280 [2021-12-06 23:17:32,735 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 329 mSDsluCounter, 5372 mSDsCounter, 0 mSdLazyCounter, 8785 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 9174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 8785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:17:32,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 5473 Invalid, 9174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 8785 Invalid, 0 Unknown, 351 Unchecked, 2.8s Time] [2021-12-06 23:17:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7601 states. [2021-12-06 23:17:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7601 to 7598. [2021-12-06 23:17:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.1085954982229829) internal successors, (8422), 7597 states have internal predecessors, (8422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 8422 transitions. [2021-12-06 23:17:32,796 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 8422 transitions. Word has length 252 [2021-12-06 23:17:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:17:32,796 INFO L470 AbstractCegarLoop]: Abstraction has 7598 states and 8422 transitions. [2021-12-06 23:17:32,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 5.115942028985507) internal successors, (353), 69 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 8422 transitions. [2021-12-06 23:17:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-06 23:17:32,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:17:32,799 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:17:32,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-12-06 23:17:33,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-12-06 23:17:33,001 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:17:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:17:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash -544928148, now seen corresponding path program 31 times [2021-12-06 23:17:33,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:17:33,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823682614] [2021-12-06 23:17:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:17:33,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:17:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:17:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 378 proven. 1454 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:33,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:17:33,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823682614] [2021-12-06 23:17:33,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823682614] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:17:33,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792829996] [2021-12-06 23:17:33,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:17:33,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:17:33,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:17:33,577 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:17:33,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-12-06 23:17:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:17:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-06 23:17:33,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:17:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 435 proven. 1397 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:34,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:17:35,608 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 5 treesize of output 3 [2021-12-06 23:17:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 435 proven. 1397 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:35,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792829996] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:17:35,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:17:35,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 37] total 75 [2021-12-06 23:17:35,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843162379] [2021-12-06 23:17:35,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:17:35,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-12-06 23:17:35,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:17:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-12-06 23:17:35,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=692, Invalid=5008, Unknown=0, NotChecked=0, Total=5700 [2021-12-06 23:17:35,694 INFO L87 Difference]: Start difference. First operand 7598 states and 8422 transitions. Second operand has 76 states, 75 states have (on average 6.96) internal successors, (522), 76 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:17:37,292 INFO L93 Difference]: Finished difference Result 8515 states and 9439 transitions. [2021-12-06 23:17:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 23:17:37,292 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 6.96) internal successors, (522), 76 states have internal predecessors, (522), 0 states have call successors, (0), 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 256 [2021-12-06 23:17:37,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:17:37,297 INFO L225 Difference]: With dead ends: 8515 [2021-12-06 23:17:37,297 INFO L226 Difference]: Without dead ends: 8515 [2021-12-06 23:17:37,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 470 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2292 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1677, Invalid=7443, Unknown=0, NotChecked=0, Total=9120 [2021-12-06 23:17:37,298 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 2196 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 3680 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:17:37,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2196 Valid, 2238 Invalid, 3862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3680 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 23:17:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8515 states. [2021-12-06 23:17:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8515 to 8062. [2021-12-06 23:17:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8062 states, 8061 states have (on average 1.1085473266344126) internal successors, (8936), 8061 states have internal predecessors, (8936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8062 states to 8062 states and 8936 transitions. [2021-12-06 23:17:37,355 INFO L78 Accepts]: Start accepts. Automaton has 8062 states and 8936 transitions. Word has length 256 [2021-12-06 23:17:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:17:37,355 INFO L470 AbstractCegarLoop]: Abstraction has 8062 states and 8936 transitions. [2021-12-06 23:17:37,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 6.96) internal successors, (522), 76 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8062 states and 8936 transitions. [2021-12-06 23:17:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-06 23:17:37,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:17:37,358 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:17:37,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-12-06 23:17:37,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-12-06 23:17:37,559 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:17:37,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:17:37,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1326674658, now seen corresponding path program 32 times [2021-12-06 23:17:37,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:17:37,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319007754] [2021-12-06 23:17:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:17:37,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:17:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:17:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 161 proven. 1848 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:38,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:17:38,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319007754] [2021-12-06 23:17:38,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319007754] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:17:38,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125285849] [2021-12-06 23:17:38,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:17:38,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:17:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:17:38,323 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:17:38,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-12-06 23:17:38,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:17:38,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:17:38,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 137 conjunts are in the unsatisfiable core [2021-12-06 23:17:38,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:17:38,617 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 10 treesize of output 8 [2021-12-06 23:17:39,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:17:39,048 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 16 treesize of output 18 [2021-12-06 23:17:39,947 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:39,947 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 15 treesize of output 10 [2021-12-06 23:17:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 161 proven. 1848 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:39,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:17:40,286 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6577 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_6577) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 16)) 0)) is different from false [2021-12-06 23:17:40,290 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:40,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:17:40,294 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:17:40,294 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 37 treesize of output 37 [2021-12-06 23:17:40,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:17:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2010 backedges. 161 proven. 1848 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:41,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125285849] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:17:41,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:17:41,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 41] total 81 [2021-12-06 23:17:41,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590211163] [2021-12-06 23:17:41,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:17:41,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-12-06 23:17:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:17:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-12-06 23:17:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=6111, Unknown=1, NotChecked=156, Total=6480 [2021-12-06 23:17:41,339 INFO L87 Difference]: Start difference. First operand 8062 states and 8936 transitions. Second operand has 81 states, 81 states have (on average 6.506172839506172) internal successors, (527), 81 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:17:45,324 INFO L93 Difference]: Finished difference Result 15607 states and 17284 transitions. [2021-12-06 23:17:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-06 23:17:45,324 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 6.506172839506172) internal successors, (527), 81 states have internal predecessors, (527), 0 states have call successors, (0), 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 267 [2021-12-06 23:17:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:17:45,328 INFO L225 Difference]: With dead ends: 15607 [2021-12-06 23:17:45,328 INFO L226 Difference]: Without dead ends: 8069 [2021-12-06 23:17:45,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 492 SyntacticMatches, 3 SemanticMatches, 114 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=560, Invalid=12553, Unknown=1, NotChecked=226, Total=13340 [2021-12-06 23:17:45,329 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 624 mSDsluCounter, 6053 mSDsCounter, 0 mSdLazyCounter, 9819 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 10122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 9819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:17:45,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 6160 Invalid, 10122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 9819 Invalid, 0 Unknown, 232 Unchecked, 2.7s Time] [2021-12-06 23:17:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8069 states. [2021-12-06 23:17:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8069 to 8066. [2021-12-06 23:17:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8066 states, 8065 states have (on average 1.1084934903905765) internal successors, (8940), 8065 states have internal predecessors, (8940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8066 states to 8066 states and 8940 transitions. [2021-12-06 23:17:45,384 INFO L78 Accepts]: Start accepts. Automaton has 8066 states and 8940 transitions. Word has length 267 [2021-12-06 23:17:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:17:45,384 INFO L470 AbstractCegarLoop]: Abstraction has 8066 states and 8940 transitions. [2021-12-06 23:17:45,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 6.506172839506172) internal successors, (527), 81 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8066 states and 8940 transitions. [2021-12-06 23:17:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-06 23:17:45,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:17:45,387 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:17:45,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-12-06 23:17:45,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-12-06 23:17:45,588 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:17:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:17:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1491361249, now seen corresponding path program 33 times [2021-12-06 23:17:45,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:17:45,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590477069] [2021-12-06 23:17:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:17:45,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:17:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:17:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 435 proven. 1639 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:46,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:17:46,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590477069] [2021-12-06 23:17:46,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590477069] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:17:46,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742203088] [2021-12-06 23:17:46,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:17:46,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:17:46,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:17:46,224 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:17:46,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-12-06 23:17:47,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-12-06 23:17:47,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:17:47,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 148 conjunts are in the unsatisfiable core [2021-12-06 23:17:47,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:17:47,438 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 10 treesize of output 8 [2021-12-06 23:17:47,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:17:49,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:17:50,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:17:50,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-06 23:17:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 544 proven. 1531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:17:51,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:17:52,976 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 37 treesize of output 31 [2021-12-06 23:17:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 561 proven. 1514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:17:56,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742203088] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:17:56,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:17:56,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 46, 47] total 129 [2021-12-06 23:17:56,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117540833] [2021-12-06 23:17:56,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:17:56,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-12-06 23:17:56,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:17:56,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-12-06 23:17:56,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1987, Invalid=14783, Unknown=0, NotChecked=0, Total=16770 [2021-12-06 23:17:56,068 INFO L87 Difference]: Start difference. First operand 8066 states and 8940 transitions. Second operand has 130 states, 129 states have (on average 6.24031007751938) internal successors, (805), 130 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:57,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:17:57,178 INFO L93 Difference]: Finished difference Result 8568 states and 9493 transitions. [2021-12-06 23:17:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-06 23:17:57,179 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 6.24031007751938) internal successors, (805), 130 states have internal predecessors, (805), 0 states have call successors, (0), 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 271 [2021-12-06 23:17:57,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:17:57,184 INFO L225 Difference]: With dead ends: 8568 [2021-12-06 23:17:57,184 INFO L226 Difference]: Without dead ends: 8568 [2021-12-06 23:17:57,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6699 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2359, Invalid=16273, Unknown=0, NotChecked=0, Total=18632 [2021-12-06 23:17:57,185 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 749 mSDsluCounter, 4448 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 396 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:17:57,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 4558 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1701 Invalid, 0 Unknown, 396 Unchecked, 0.7s Time] [2021-12-06 23:17:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8568 states. [2021-12-06 23:17:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8568 to 8530. [2021-12-06 23:17:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8530 states, 8529 states have (on average 1.1084535115488334) internal successors, (9454), 8529 states have internal predecessors, (9454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8530 states to 8530 states and 9454 transitions. [2021-12-06 23:17:57,244 INFO L78 Accepts]: Start accepts. Automaton has 8530 states and 9454 transitions. Word has length 271 [2021-12-06 23:17:57,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:17:57,244 INFO L470 AbstractCegarLoop]: Abstraction has 8530 states and 9454 transitions. [2021-12-06 23:17:57,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 6.24031007751938) internal successors, (805), 130 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:17:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8530 states and 9454 transitions. [2021-12-06 23:17:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-12-06 23:17:57,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:17:57,248 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:17:57,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-12-06 23:17:57,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-12-06 23:17:57,450 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:17:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:17:57,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1281782409, now seen corresponding path program 34 times [2021-12-06 23:17:57,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:17:57,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465188030] [2021-12-06 23:17:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:17:57,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:17:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:17:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 171 proven. 2091 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:17:58,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:17:58,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465188030] [2021-12-06 23:17:58,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465188030] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:17:58,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974423339] [2021-12-06 23:17:58,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:17:58,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:17:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:17:58,249 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:17:58,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-12-06 23:17:58,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:17:58,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:17:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 129 conjunts are in the unsatisfiable core [2021-12-06 23:17:58,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:17:58,577 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:17:58,577 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:18:00,637 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 14 treesize of output 10 [2021-12-06 23:18:00,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:00,723 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 17 treesize of output 19 [2021-12-06 23:18:04,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:04,155 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 17 treesize of output 17 [2021-12-06 23:18:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 1599 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:04,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:18:06,350 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:06,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:18:06,355 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:06,355 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 37 treesize of output 37 [2021-12-06 23:18:06,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:18:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 86 proven. 2177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:18:09,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974423339] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:09,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:18:09,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 48, 48] total 134 [2021-12-06 23:18:09,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636022379] [2021-12-06 23:18:09,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:09,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2021-12-06 23:18:09,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:09,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2021-12-06 23:18:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1235, Invalid=16582, Unknown=5, NotChecked=0, Total=17822 [2021-12-06 23:18:09,910 INFO L87 Difference]: Start difference. First operand 8530 states and 9454 transitions. Second operand has 134 states, 134 states have (on average 6.17910447761194) internal successors, (828), 134 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:14,871 INFO L93 Difference]: Finished difference Result 16539 states and 18316 transitions. [2021-12-06 23:18:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-12-06 23:18:14,871 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 6.17910447761194) internal successors, (828), 134 states have internal predecessors, (828), 0 states have call successors, (0), 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 282 [2021-12-06 23:18:14,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:14,876 INFO L225 Difference]: With dead ends: 16539 [2021-12-06 23:18:14,876 INFO L226 Difference]: Without dead ends: 8537 [2021-12-06 23:18:14,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5869 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2402, Invalid=30173, Unknown=5, NotChecked=0, Total=32580 [2021-12-06 23:18:14,877 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 364 mSDsluCounter, 7367 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 3889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:14,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 7477 Invalid, 3889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3604 Invalid, 0 Unknown, 232 Unchecked, 1.2s Time] [2021-12-06 23:18:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2021-12-06 23:18:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 8534. [2021-12-06 23:18:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8534 states, 8533 states have (on average 1.1084026719793743) internal successors, (9458), 8533 states have internal predecessors, (9458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 9458 transitions. [2021-12-06 23:18:14,937 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 9458 transitions. Word has length 282 [2021-12-06 23:18:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:14,937 INFO L470 AbstractCegarLoop]: Abstraction has 8534 states and 9458 transitions. [2021-12-06 23:18:14,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 6.17910447761194) internal successors, (828), 134 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 9458 transitions. [2021-12-06 23:18:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-12-06 23:18:14,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:14,941 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:14,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:15,142 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:18:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:15,144 INFO L85 PathProgramCache]: Analyzing trace with hash 770745190, now seen corresponding path program 35 times [2021-12-06 23:18:15,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:18:15,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420739648] [2021-12-06 23:18:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:15,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:18:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 496 proven. 1835 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:15,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:18:15,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420739648] [2021-12-06 23:18:15,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420739648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:18:15,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689924783] [2021-12-06 23:18:15,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:18:15,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:15,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:15,837 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:18:15,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-12-06 23:18:16,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-12-06 23:18:16,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:18:16,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-06 23:18:16,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 561 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:17,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:18:18,672 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 21 treesize of output 17 [2021-12-06 23:18:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 561 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:19,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689924783] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:19,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:18:19,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 100 [2021-12-06 23:18:19,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516992371] [2021-12-06 23:18:19,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:19,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-12-06 23:18:19,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-12-06 23:18:19,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=8730, Unknown=0, NotChecked=0, Total=10100 [2021-12-06 23:18:19,519 INFO L87 Difference]: Start difference. First operand 8534 states and 9458 transitions. Second operand has 101 states, 100 states have (on average 6.62) internal successors, (662), 101 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:21,522 INFO L93 Difference]: Finished difference Result 9451 states and 10475 transitions. [2021-12-06 23:18:21,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 23:18:21,522 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 6.62) internal successors, (662), 101 states have internal predecessors, (662), 0 states have call successors, (0), 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 286 [2021-12-06 23:18:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:21,527 INFO L225 Difference]: With dead ends: 9451 [2021-12-06 23:18:21,527 INFO L226 Difference]: Without dead ends: 9451 [2021-12-06 23:18:21,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 510 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4119 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2980, Invalid=12026, Unknown=0, NotChecked=0, Total=15006 [2021-12-06 23:18:21,528 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 3775 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 4640 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3775 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 4963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 4640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:21,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3775 Valid, 2794 Invalid, 4963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 4640 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 23:18:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9451 states. [2021-12-06 23:18:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9451 to 8998. [2021-12-06 23:18:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8998 states, 8997 states have (on average 1.1083694564854951) internal successors, (9972), 8997 states have internal predecessors, (9972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8998 states to 8998 states and 9972 transitions. [2021-12-06 23:18:21,592 INFO L78 Accepts]: Start accepts. Automaton has 8998 states and 9972 transitions. Word has length 286 [2021-12-06 23:18:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:21,592 INFO L470 AbstractCegarLoop]: Abstraction has 8998 states and 9972 transitions. [2021-12-06 23:18:21,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 6.62) internal successors, (662), 101 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 8998 states and 9972 transitions. [2021-12-06 23:18:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-12-06 23:18:21,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:21,596 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:21,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-12-06 23:18:21,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-12-06 23:18:21,798 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:18:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash -122161180, now seen corresponding path program 36 times [2021-12-06 23:18:21,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:18:21,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988970590] [2021-12-06 23:18:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:21,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:18:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2531 backedges. 181 proven. 2349 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:23,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:18:23,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988970590] [2021-12-06 23:18:23,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988970590] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:18:23,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18957529] [2021-12-06 23:18:23,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:18:23,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:23,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:23,275 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:18:23,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-12-06 23:18:27,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-12-06 23:18:27,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:18:27,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 143 conjunts are in the unsatisfiable core [2021-12-06 23:18:27,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:27,038 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 10 treesize of output 8 [2021-12-06 23:18:28,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:18:28,150 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 17 treesize of output 19 [2021-12-06 23:18:28,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:18:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2531 backedges. 181 proven. 2349 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:28,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:18:28,958 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6960 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_6960) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 18)) 0)) is different from false [2021-12-06 23:18:28,962 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:28,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:18:28,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:28,965 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 37 treesize of output 37 [2021-12-06 23:18:28,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:18:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2531 backedges. 181 proven. 2349 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:29,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18957529] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:29,389 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:18:29,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 45, 45] total 78 [2021-12-06 23:18:29,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198947616] [2021-12-06 23:18:29,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:29,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-12-06 23:18:29,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:29,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-12-06 23:18:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=5679, Unknown=1, NotChecked=150, Total=6006 [2021-12-06 23:18:29,390 INFO L87 Difference]: Start difference. First operand 8998 states and 9972 transitions. Second operand has 78 states, 78 states have (on average 5.256410256410256) internal successors, (410), 78 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) [2021-12-06 23:18:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:34,851 INFO L93 Difference]: Finished difference Result 17471 states and 19348 transitions. [2021-12-06 23:18:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-06 23:18:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 5.256410256410256) internal successors, (410), 78 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) Word has length 297 [2021-12-06 23:18:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:34,856 INFO L225 Difference]: With dead ends: 17471 [2021-12-06 23:18:34,856 INFO L226 Difference]: Without dead ends: 9005 [2021-12-06 23:18:34,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 563 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=400, Invalid=13409, Unknown=1, NotChecked=232, Total=14042 [2021-12-06 23:18:34,856 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 119 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 12527 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 13015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:34,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 7801 Invalid, 13015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12527 Invalid, 0 Unknown, 467 Unchecked, 3.7s Time] [2021-12-06 23:18:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9005 states. [2021-12-06 23:18:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9005 to 9002. [2021-12-06 23:18:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9002 states, 9001 states have (on average 1.1083212976335963) internal successors, (9976), 9001 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 9976 transitions. [2021-12-06 23:18:34,925 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 9976 transitions. Word has length 297 [2021-12-06 23:18:34,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:34,926 INFO L470 AbstractCegarLoop]: Abstraction has 9002 states and 9976 transitions. [2021-12-06 23:18:34,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 5.256410256410256) internal successors, (410), 78 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) [2021-12-06 23:18:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 9976 transitions. [2021-12-06 23:18:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-12-06 23:18:34,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:34,930 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:34,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-12-06 23:18:35,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-12-06 23:18:35,131 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:18:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1502326425, now seen corresponding path program 37 times [2021-12-06 23:18:35,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:18:35,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559038432] [2021-12-06 23:18:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:35,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:18:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2604 backedges. 561 proven. 2042 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:35,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:18:35,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559038432] [2021-12-06 23:18:35,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559038432] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:18:35,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375898824] [2021-12-06 23:18:35,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:18:35,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:35,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:35,801 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:18:35,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-12-06 23:18:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:36,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 121 conjunts are in the unsatisfiable core [2021-12-06 23:18:36,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:36,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:36,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 23:18:36,102 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 10 treesize of output 8 [2021-12-06 23:18:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2604 backedges. 630 proven. 1973 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:38,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:18:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2604 backedges. 703 proven. 1900 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:40,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375898824] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:40,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:18:40,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 123 [2021-12-06 23:18:40,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877288425] [2021-12-06 23:18:40,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:40,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-12-06 23:18:40,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:40,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-12-06 23:18:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=13839, Unknown=0, NotChecked=0, Total=15252 [2021-12-06 23:18:40,785 INFO L87 Difference]: Start difference. First operand 9002 states and 9976 transitions. Second operand has 124 states, 123 states have (on average 7.203252032520325) internal successors, (886), 124 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:44,162 INFO L93 Difference]: Finished difference Result 9919 states and 10993 transitions. [2021-12-06 23:18:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 23:18:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 7.203252032520325) internal successors, (886), 124 states have internal predecessors, (886), 0 states have call successors, (0), 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 301 [2021-12-06 23:18:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:44,168 INFO L225 Difference]: With dead ends: 9919 [2021-12-06 23:18:44,168 INFO L226 Difference]: Without dead ends: 9919 [2021-12-06 23:18:44,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6222 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4209, Invalid=22851, Unknown=0, NotChecked=0, Total=27060 [2021-12-06 23:18:44,169 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 3003 mSDsluCounter, 4044 mSDsCounter, 0 mSdLazyCounter, 6774 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3003 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 7033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 6774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:44,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3003 Valid, 4173 Invalid, 7033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 6774 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 23:18:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9919 states. [2021-12-06 23:18:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9919 to 9466. [2021-12-06 23:18:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9466 states, 9465 states have (on average 1.1082937136819864) internal successors, (10490), 9465 states have internal predecessors, (10490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9466 states to 9466 states and 10490 transitions. [2021-12-06 23:18:44,236 INFO L78 Accepts]: Start accepts. Automaton has 9466 states and 10490 transitions. Word has length 301 [2021-12-06 23:18:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:44,236 INFO L470 AbstractCegarLoop]: Abstraction has 9466 states and 10490 transitions. [2021-12-06 23:18:44,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 7.203252032520325) internal successors, (886), 124 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 9466 states and 10490 transitions. [2021-12-06 23:18:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-12-06 23:18:44,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:44,241 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:44,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2021-12-06 23:18:44,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-12-06 23:18:44,442 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:18:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash -429052093, now seen corresponding path program 38 times [2021-12-06 23:18:44,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:18:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257119306] [2021-12-06 23:18:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:44,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:18:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2814 backedges. 191 proven. 2622 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:45,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:18:45,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257119306] [2021-12-06 23:18:45,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257119306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:18:45,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865623731] [2021-12-06 23:18:45,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:18:45,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:45,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:45,878 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:18:45,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-12-06 23:18:46,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:18:46,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:18:46,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 147 conjunts are in the unsatisfiable core [2021-12-06 23:18:46,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:46,357 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 10 treesize of output 8 [2021-12-06 23:18:47,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 23:18:47,477 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 17 treesize of output 19 [2021-12-06 23:18:47,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:18:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2814 backedges. 191 proven. 2622 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:47,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:18:48,339 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7164 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~nondetString2~0#1.base| v_ArrVal_7164) |c_ULTIMATE.start_main_~nondetString1~0#1.base|) (+ |c_ULTIMATE.start_main_~nondetString1~0#1.offset| 19)) 0)) is different from false [2021-12-06 23:18:48,342 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:48,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:18:48,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:48,346 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 37 treesize of output 37 [2021-12-06 23:18:48,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:18:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2814 backedges. 191 proven. 2622 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:48,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865623731] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:48,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:18:48,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 47, 47] total 81 [2021-12-06 23:18:48,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039908908] [2021-12-06 23:18:48,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:48,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-12-06 23:18:48,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-12-06 23:18:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=6141, Unknown=1, NotChecked=156, Total=6480 [2021-12-06 23:18:48,776 INFO L87 Difference]: Start difference. First operand 9466 states and 10490 transitions. Second operand has 81 states, 81 states have (on average 5.296296296296297) internal successors, (429), 81 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) [2021-12-06 23:18:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:54,798 INFO L93 Difference]: Finished difference Result 18403 states and 20380 transitions. [2021-12-06 23:18:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-06 23:18:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.296296296296297) internal successors, (429), 81 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) Word has length 312 [2021-12-06 23:18:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:54,803 INFO L225 Difference]: With dead ends: 18403 [2021-12-06 23:18:54,803 INFO L226 Difference]: Without dead ends: 9473 [2021-12-06 23:18:54,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 592 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=415, Invalid=14593, Unknown=2, NotChecked=242, Total=15252 [2021-12-06 23:18:54,804 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 167 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 13769 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 8378 SdHoareTripleChecker+Invalid, 14051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 13769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:54,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 8378 Invalid, 14051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 13769 Invalid, 0 Unknown, 258 Unchecked, 4.1s Time] [2021-12-06 23:18:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2021-12-06 23:18:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 9470. [2021-12-06 23:18:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9470 states, 9469 states have (on average 1.1082479670503749) internal successors, (10494), 9469 states have internal predecessors, (10494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9470 states to 9470 states and 10494 transitions. [2021-12-06 23:18:54,865 INFO L78 Accepts]: Start accepts. Automaton has 9470 states and 10494 transitions. Word has length 312 [2021-12-06 23:18:54,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:54,865 INFO L470 AbstractCegarLoop]: Abstraction has 9470 states and 10494 transitions. [2021-12-06 23:18:54,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.296296296296297) internal successors, (429), 81 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) [2021-12-06 23:18:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9470 states and 10494 transitions. [2021-12-06 23:18:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-12-06 23:18:54,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:54,877 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:54,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-12-06 23:18:55,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:55,078 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 15 more)] === [2021-12-06 23:18:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1393016992, now seen corresponding path program 39 times [2021-12-06 23:18:55,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:18:55,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219507949] [2021-12-06 23:18:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:55,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:18:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:18:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2891 backedges. 630 proven. 2260 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:18:55,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:18:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219507949] [2021-12-06 23:18:55,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219507949] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:18:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832075905] [2021-12-06 23:18:55,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:18:55,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:55,806 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:18:55,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-12-06 23:18:59,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-12-06 23:18:59,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:18:59,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 92 conjunts are in the unsatisfiable core [2021-12-06 23:18:59,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:59,551 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 23:18:59,552 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 23:18:59,555 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 10 treesize of output 8 [2021-12-06 23:19:00,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 23:19:00,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 23:19:00,387 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:19:00,388 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 19 treesize of output 19 [2021-12-06 23:19:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2891 backedges. 77 proven. 210 refuted. 0 times theorem prover too weak. 2604 trivial. 0 not checked. [2021-12-06 23:19:00,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:19:02,600 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:19:02,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2021-12-06 23:19:02,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:19:02,607 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 37 treesize of output 37 [2021-12-06 23:19:02,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:19:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2891 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2021-12-06 23:19:03,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832075905] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:19:03,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:19:03,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 11, 15] total 68 [2021-12-06 23:19:03,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9636045] [2021-12-06 23:19:03,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:19:03,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 23:19:03,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:19:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 23:19:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=4130, Unknown=11, NotChecked=0, Total=4692 [2021-12-06 23:19:03,567 INFO L87 Difference]: Start difference. First operand 9470 states and 10494 transitions. Second operand has 69 states, 68 states have (on average 6.205882352941177) internal successors, (422), 69 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:09,096 INFO L93 Difference]: Finished difference Result 10496 states and 11582 transitions. [2021-12-06 23:19:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-12-06 23:19:09,096 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 6.205882352941177) internal successors, (422), 69 states have internal predecessors, (422), 0 states have call successors, (0), 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 316 [2021-12-06 23:19:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:09,097 INFO L225 Difference]: With dead ends: 10496 [2021-12-06 23:19:09,097 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 23:19:09,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3731 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4899, Invalid=18959, Unknown=12, NotChecked=0, Total=23870 [2021-12-06 23:19:09,098 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 4991 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 5019 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 5887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 5019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:09,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4991 Valid, 2506 Invalid, 5887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 5019 Invalid, 0 Unknown, 38 Unchecked, 1.9s Time] [2021-12-06 23:19:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 23:19:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 23:19:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 23:19:09,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 316 [2021-12-06 23:19:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:09,098 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:19:09,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 6.205882352941177) internal successors, (422), 69 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 23:19:09,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 23:19:09,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (18 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (17 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (16 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (15 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (14 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (13 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (12 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION (11 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION (10 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION (9 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION (8 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION (7 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION (6 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATION (5 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATION (4 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATION (3 of 19 remaining) [2021-12-06 23:19:09,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATION (2 of 19 remaining) [2021-12-06 23:19:09,102 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATION (1 of 19 remaining) [2021-12-06 23:19:09,102 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (0 of 19 remaining) [2021-12-06 23:19:09,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2021-12-06 23:19:09,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:09,310 INFO L732 BasicCegarLoop]: Path program histogram: [39, 30, 15, 15, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:09,315 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:19:09,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:19:09 BoogieIcfgContainer [2021-12-06 23:19:09,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:19:09,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:19:09,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:19:09,323 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:19:09,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:06:54" (3/4) ... [2021-12-06 23:19:09,332 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 23:19:09,349 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 23:19:09,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 23:19:09,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 23:19:09,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 23:19:09,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:19:09,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:19:09,380 INFO L158 Benchmark]: Toolchain (without parser) took 736001.69ms. Allocated memory was 94.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 58.2MB in the beginning and 249.9MB in the end (delta: -191.7MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-12-06 23:19:09,381 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory was 76.0MB in the beginning and 75.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:19:09,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.12ms. Allocated memory is still 94.4MB. Free memory was 58.0MB in the beginning and 65.8MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:19:09,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.27ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:19:09,381 INFO L158 Benchmark]: Boogie Preprocessor took 19.78ms. Allocated memory is still 94.4MB. Free memory was 64.1MB in the beginning and 62.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:19:09,381 INFO L158 Benchmark]: RCFGBuilder took 253.65ms. Allocated memory is still 94.4MB. Free memory was 62.4MB in the beginning and 49.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 23:19:09,381 INFO L158 Benchmark]: TraceAbstraction took 735306.20ms. Allocated memory was 94.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 48.6MB in the beginning and 253.7MB in the end (delta: -205.1MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-12-06 23:19:09,381 INFO L158 Benchmark]: Witness Printer took 57.45ms. Allocated memory is still 1.5GB. Free memory was 253.7MB in the beginning and 249.9MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:19:09,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory was 76.0MB in the beginning and 75.9MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.12ms. Allocated memory is still 94.4MB. Free memory was 58.0MB in the beginning and 65.8MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.27ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 64.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.78ms. Allocated memory is still 94.4MB. Free memory was 64.1MB in the beginning and 62.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 253.65ms. Allocated memory is still 94.4MB. Free memory was 62.4MB in the beginning and 49.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 735306.20ms. Allocated memory was 94.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 48.6MB in the beginning and 253.7MB in the end (delta: -205.1MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 57.45ms. Allocated memory is still 1.5GB. Free memory was 253.7MB in the beginning and 249.9MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 549]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 549]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 735.3s, OverallIterations: 132, TraceHistogramMax: 20, PathProgramHistogramMax: 39, EmptinessCheckTime: 0.2s, AutomataDifference: 332.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87279 SdHoareTripleChecker+Valid, 108.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87279 mSDsluCounter, 259016 SdHoareTripleChecker+Invalid, 91.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 35426 IncrementalHoareTripleChecker+Unchecked, 249544 mSDsCounter, 10738 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 318778 IncrementalHoareTripleChecker+Invalid, 364942 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10738 mSolverCounterUnsat, 9472 mSDtfsCounter, 318778 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36155 GetRequests, 25850 SyntacticMatches, 229 SemanticMatches, 10076 ConstructedPredicates, 23 IntricatePredicates, 109 DeprecatedPredicates, 250432 ImplicationChecksByTransitivity, 414.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15913occurred in iteration=114, InterpolantAutomatonStates: 5505, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 132 MinimizatonAttempts, 113044 StatesRemovedByMinimization, 120 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.9s SsaConstructionTime, 36.4s SatisfiabilityAnalysisTime, 326.6s InterpolantComputationTime, 29409 NumberOfCodeBlocks, 29193 NumberOfCodeBlocksAsserted, 689 NumberOfCheckSat, 43590 ConstructedInterpolants, 3794 QuantifiedInterpolants, 535993 SizeOfPredicates, 1895 NumberOfNonLiveVariables, 62863 ConjunctsInSsa, 7242 ConjunctsInUnsatCore, 350 InterpolantComputations, 23 PerfectInterpolantSequences, 62264/196879 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 23:19:09,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59184b37-988a-41eb-9df6-14be2d04b86e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE