./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/pr4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/pr4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14a75e050103eb09182e049a798a738dec478e3acaa4fb01ae8649b715b8362f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:15:14,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:15:14,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:15:14,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:15:14,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:15:14,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:15:14,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:15:14,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:15:14,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:15:14,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:15:14,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:15:14,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:15:14,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:15:14,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:15:14,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:15:14,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:15:14,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:15:14,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:15:14,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:15:14,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:15:14,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:15:14,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:15:14,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:15:14,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:15:14,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:15:14,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:15:14,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:15:14,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:15:14,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:15:14,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:15:14,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:15:14,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:15:14,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:15:14,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:15:14,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:15:14,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:15:14,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:15:14,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:15:14,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:15:14,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:15:14,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:15:14,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:15:14,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:15:14,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:15:14,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:15:14,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:15:14,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:15:14,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:15:14,864 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:15:14,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:15:14,865 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:15:14,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:15:14,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:15:14,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:15:14,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:15:14,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:15:14,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:15:14,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:15:14,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:15:14,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:15:14,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:15:14,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:15:14,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:15:14,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:15:14,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:15:14,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:15:14,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:15:14,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:15:14,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:15:14,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:15:14,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:15:14,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:15:14,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:15:14,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:15:14,874 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_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a75e050103eb09182e049a798a738dec478e3acaa4fb01ae8649b715b8362f [2021-11-07 08:15:15,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:15:15,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:15:15,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:15:15,212 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:15:15,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:15:15,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/array-tiling/pr4.c [2021-11-07 08:15:15,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/data/b8a3bba0a/d6045e2b20cc4e939abbb1c3d2dfb93c/FLAGebab266bb [2021-11-07 08:15:15,873 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:15:15,874 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/sv-benchmarks/c/array-tiling/pr4.c [2021-11-07 08:15:15,882 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/data/b8a3bba0a/d6045e2b20cc4e939abbb1c3d2dfb93c/FLAGebab266bb [2021-11-07 08:15:16,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/data/b8a3bba0a/d6045e2b20cc4e939abbb1c3d2dfb93c [2021-11-07 08:15:16,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:15:16,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:15:16,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:15:16,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:15:16,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:15:16,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b0c1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16, skipping insertion in model container [2021-11-07 08:15:16,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:15:16,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:15:16,383 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/sv-benchmarks/c/array-tiling/pr4.c[394,407] [2021-11-07 08:15:16,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:15:16,409 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:15:16,422 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/sv-benchmarks/c/array-tiling/pr4.c[394,407] [2021-11-07 08:15:16,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:15:16,447 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:15:16,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16 WrapperNode [2021-11-07 08:15:16,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:15:16,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:15:16,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:15:16,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:15:16,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:15:16,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:15:16,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:15:16,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:15:16,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:15:16,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:15:16,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:15:16,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:15:16,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (1/1) ... [2021-11-07 08:15:16,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:15:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:16,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:15:16,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:15:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:15:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:15:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:15:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:15:16,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:15:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:15:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:15:16,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:15:16,880 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 08:15:16,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:15:16 BoogieIcfgContainer [2021-11-07 08:15:16,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:15:16,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:15:16,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:15:16,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:15:16,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:15:16" (1/3) ... [2021-11-07 08:15:16,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0b155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:15:16, skipping insertion in model container [2021-11-07 08:15:16,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:15:16" (2/3) ... [2021-11-07 08:15:16,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0b155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:15:16, skipping insertion in model container [2021-11-07 08:15:16,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:15:16" (3/3) ... [2021-11-07 08:15:16,906 INFO L111 eAbstractionObserver]: Analyzing ICFG pr4.c [2021-11-07 08:15:16,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:15:16,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:15:17,004 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:15:17,021 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:15:17,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:15:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 08:15:17,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:17,071 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:17,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash -260661418, now seen corresponding path program 1 times [2021-11-07 08:15:17,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:17,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059055993] [2021-11-07 08:15:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:17,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:17,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:17,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059055993] [2021-11-07 08:15:17,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059055993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:17,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:17,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:15:17,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297844042] [2021-11-07 08:15:17,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:15:17,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:15:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:15:17,320 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:17,339 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2021-11-07 08:15:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:15:17,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 08:15:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:17,349 INFO L225 Difference]: With dead ends: 47 [2021-11-07 08:15:17,349 INFO L226 Difference]: Without dead ends: 21 [2021-11-07 08:15:17,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:15:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-07 08:15:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-07 08:15:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-11-07 08:15:17,388 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2021-11-07 08:15:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:17,388 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-11-07 08:15:17,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2021-11-07 08:15:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 08:15:17,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:17,391 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:17,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:15:17,394 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:17,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash 451593979, now seen corresponding path program 1 times [2021-11-07 08:15:17,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:17,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290126005] [2021-11-07 08:15:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:17,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:17,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:17,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290126005] [2021-11-07 08:15:17,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290126005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:17,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:17,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:15:17,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907750500] [2021-11-07 08:15:17,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:15:17,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:15:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:15:17,545 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:17,596 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2021-11-07 08:15:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:15:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 08:15:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:17,598 INFO L225 Difference]: With dead ends: 30 [2021-11-07 08:15:17,598 INFO L226 Difference]: Without dead ends: 28 [2021-11-07 08:15:17,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-07 08:15:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-11-07 08:15:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-11-07 08:15:17,604 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2021-11-07 08:15:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:17,604 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-11-07 08:15:17,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2021-11-07 08:15:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 08:15:17,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:17,606 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:17,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:15:17,606 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 451653561, now seen corresponding path program 1 times [2021-11-07 08:15:17,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:17,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297002860] [2021-11-07 08:15:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:17,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:17,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:17,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297002860] [2021-11-07 08:15:17,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297002860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:17,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:17,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:15:17,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504144190] [2021-11-07 08:15:17,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:15:17,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:15:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:17,859 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:17,954 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2021-11-07 08:15:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:15:17,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 08:15:17,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:17,956 INFO L225 Difference]: With dead ends: 40 [2021-11-07 08:15:17,956 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 08:15:17,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 08:15:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-07 08:15:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2021-11-07 08:15:17,962 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 13 [2021-11-07 08:15:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:17,962 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2021-11-07 08:15:17,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2021-11-07 08:15:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 08:15:17,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:17,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:17,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:15:17,964 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1654662766, now seen corresponding path program 1 times [2021-11-07 08:15:17,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:17,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822959571] [2021-11-07 08:15:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:17,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:18,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:18,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822959571] [2021-11-07 08:15:18,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822959571] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:18,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34648040] [2021-11-07 08:15:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:18,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:18,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:18,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:18,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:15:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:18,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:15:18,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:18,779 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 20 treesize of output 16 [2021-11-07 08:15:18,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:18,869 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 29 treesize of output 28 [2021-11-07 08:15:18,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:18,917 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 29 treesize of output 28 [2021-11-07 08:15:18,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:18,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 08:15:19,116 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:19,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2021-11-07 08:15:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:19,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34648040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:19,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:19,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-11-07 08:15:19,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664002405] [2021-11-07 08:15:19,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:15:19,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:19,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:15:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:15:19,210 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:20,261 INFO L93 Difference]: Finished difference Result 134 states and 166 transitions. [2021-11-07 08:15:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 08:15:20,262 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 08:15:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:20,265 INFO L225 Difference]: With dead ends: 134 [2021-11-07 08:15:20,266 INFO L226 Difference]: Without dead ends: 124 [2021-11-07 08:15:20,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 08:15:20,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-07 08:15:20,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 39. [2021-11-07 08:15:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-11-07 08:15:20,280 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 19 [2021-11-07 08:15:20,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:20,281 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-11-07 08:15:20,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-11-07 08:15:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 08:15:20,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:20,283 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:20,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:20,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:20,503 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:20,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 581577386, now seen corresponding path program 1 times [2021-11-07 08:15:20,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:20,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178028998] [2021-11-07 08:15:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:20,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:20,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:20,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178028998] [2021-11-07 08:15:20,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178028998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:20,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:20,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:15:20,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394451223] [2021-11-07 08:15:20,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:15:20,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:15:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:15:20,570 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:20,619 INFO L93 Difference]: Finished difference Result 82 states and 115 transitions. [2021-11-07 08:15:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:15:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 08:15:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:20,621 INFO L225 Difference]: With dead ends: 82 [2021-11-07 08:15:20,621 INFO L226 Difference]: Without dead ends: 65 [2021-11-07 08:15:20,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-07 08:15:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2021-11-07 08:15:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.5) internal successors, (75), 50 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) [2021-11-07 08:15:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2021-11-07 08:15:20,650 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 75 transitions. Word has length 19 [2021-11-07 08:15:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:20,650 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 75 transitions. [2021-11-07 08:15:20,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2021-11-07 08:15:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 08:15:20,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:20,652 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:20,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:15:20,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1912828204, now seen corresponding path program 1 times [2021-11-07 08:15:20,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:20,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394720384] [2021-11-07 08:15:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:20,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:20,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:20,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394720384] [2021-11-07 08:15:20,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394720384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:20,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:20,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:15:20,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702306350] [2021-11-07 08:15:20,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:15:20,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:15:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:15:20,724 INFO L87 Difference]: Start difference. First operand 51 states and 75 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:20,761 INFO L93 Difference]: Finished difference Result 93 states and 134 transitions. [2021-11-07 08:15:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:15:20,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 08:15:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:20,763 INFO L225 Difference]: With dead ends: 93 [2021-11-07 08:15:20,763 INFO L226 Difference]: Without dead ends: 70 [2021-11-07 08:15:20,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-07 08:15:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2021-11-07 08:15:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5) internal successors, (84), 56 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2021-11-07 08:15:20,775 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 19 [2021-11-07 08:15:20,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:20,776 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2021-11-07 08:15:20,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2021-11-07 08:15:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 08:15:20,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:20,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:20,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:15:20,781 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1519801194, now seen corresponding path program 1 times [2021-11-07 08:15:20,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:20,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217565970] [2021-11-07 08:15:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:20,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:20,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:20,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217565970] [2021-11-07 08:15:20,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217565970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:20,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613152974] [2021-11-07 08:15:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:20,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:20,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:20,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:20,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:15:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:21,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 08:15:21,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:21,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:21,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-07 08:15:21,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:21,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:21,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-11-07 08:15:21,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 32 [2021-11-07 08:15:21,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:21,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:21,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-11-07 08:15:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:21,202 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:21,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 59 [2021-11-07 08:15:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:21,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613152974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:21,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:21,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 13 [2021-11-07 08:15:21,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439596127] [2021-11-07 08:15:21,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:15:21,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:15:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:15:21,385 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:21,954 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2021-11-07 08:15:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 08:15:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 08:15:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:21,956 INFO L225 Difference]: With dead ends: 119 [2021-11-07 08:15:21,957 INFO L226 Difference]: Without dead ends: 117 [2021-11-07 08:15:21,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:15:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-07 08:15:21,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 66. [2021-11-07 08:15:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2021-11-07 08:15:21,976 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 19 [2021-11-07 08:15:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:21,977 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2021-11-07 08:15:21,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2021-11-07 08:15:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:21,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:21,983 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:22,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:22,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-07 08:15:22,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2022900031, now seen corresponding path program 1 times [2021-11-07 08:15:22,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:22,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059688630] [2021-11-07 08:15:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:22,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:22,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:22,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059688630] [2021-11-07 08:15:22,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059688630] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:22,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874337039] [2021-11-07 08:15:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:22,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:22,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:22,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:15:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:22,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 08:15:22,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:22,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-07 08:15:22,718 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:15:22,718 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 29 treesize of output 28 [2021-11-07 08:15:22,772 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 08:15:22,772 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 23 treesize of output 22 [2021-11-07 08:15:23,022 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:15:23,023 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 43 treesize of output 25 [2021-11-07 08:15:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:23,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874337039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:23,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:23,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 08:15:23,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329735841] [2021-11-07 08:15:23,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:15:23,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:15:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:15:23,068 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:24,349 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2021-11-07 08:15:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 08:15:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:15:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:24,355 INFO L225 Difference]: With dead ends: 217 [2021-11-07 08:15:24,355 INFO L226 Difference]: Without dead ends: 169 [2021-11-07 08:15:24,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 08:15:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-07 08:15:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 83. [2021-11-07 08:15:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 115 transitions. [2021-11-07 08:15:24,369 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 115 transitions. Word has length 25 [2021-11-07 08:15:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:24,369 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 115 transitions. [2021-11-07 08:15:24,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 115 transitions. [2021-11-07 08:15:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:24,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:24,371 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:24,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:24,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 08:15:24,587 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1893933921, now seen corresponding path program 1 times [2021-11-07 08:15:24,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:24,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740135125] [2021-11-07 08:15:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:24,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:24,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:24,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740135125] [2021-11-07 08:15:24,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740135125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:24,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:24,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:24,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334969277] [2021-11-07 08:15:24,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:24,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:24,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:24,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:24,663 INFO L87 Difference]: Start difference. First operand 83 states and 115 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:24,697 INFO L93 Difference]: Finished difference Result 146 states and 199 transitions. [2021-11-07 08:15:24,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:24,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:15:24,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:24,699 INFO L225 Difference]: With dead ends: 146 [2021-11-07 08:15:24,699 INFO L226 Difference]: Without dead ends: 117 [2021-11-07 08:15:24,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-07 08:15:24,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 77. [2021-11-07 08:15:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.381578947368421) internal successors, (105), 76 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2021-11-07 08:15:24,725 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 25 [2021-11-07 08:15:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:24,726 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2021-11-07 08:15:24,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2021-11-07 08:15:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:24,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:24,729 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:24,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:15:24,730 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1855836577, now seen corresponding path program 1 times [2021-11-07 08:15:24,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:24,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403112279] [2021-11-07 08:15:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:24,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:24,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:24,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403112279] [2021-11-07 08:15:24,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403112279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:24,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:24,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:24,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680556778] [2021-11-07 08:15:24,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:24,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:24,784 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:24,812 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2021-11-07 08:15:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:24,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:15:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:24,814 INFO L225 Difference]: With dead ends: 110 [2021-11-07 08:15:24,814 INFO L226 Difference]: Without dead ends: 76 [2021-11-07 08:15:24,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-07 08:15:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2021-11-07 08:15:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2021-11-07 08:15:24,828 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 25 [2021-11-07 08:15:24,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:24,828 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-11-07 08:15:24,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,829 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2021-11-07 08:15:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:24,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:24,837 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:24,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:15:24,838 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash -441111327, now seen corresponding path program 2 times [2021-11-07 08:15:24,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:24,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638270715] [2021-11-07 08:15:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:24,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:24,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:24,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638270715] [2021-11-07 08:15:24,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638270715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:24,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:24,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:24,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870004833] [2021-11-07 08:15:24,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:24,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:24,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:24,894 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:24,926 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2021-11-07 08:15:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:24,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:15:24,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:24,929 INFO L225 Difference]: With dead ends: 98 [2021-11-07 08:15:24,929 INFO L226 Difference]: Without dead ends: 80 [2021-11-07 08:15:24,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-07 08:15:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-11-07 08:15:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.271186440677966) internal successors, (75), 59 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) [2021-11-07 08:15:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2021-11-07 08:15:24,938 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 25 [2021-11-07 08:15:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:24,938 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2021-11-07 08:15:24,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2021-11-07 08:15:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:24,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:24,940 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:24,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:15:24,940 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:24,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:24,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1121169697, now seen corresponding path program 1 times [2021-11-07 08:15:24,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:24,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162892041] [2021-11-07 08:15:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:24,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:25,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:25,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162892041] [2021-11-07 08:15:25,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162892041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:25,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549476356] [2021-11-07 08:15:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:25,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:25,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:25,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:15:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:25,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 08:15:25,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:25,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:25,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,635 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 29 treesize of output 28 [2021-11-07 08:15:25,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,714 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:25,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:15:25,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:25,820 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:25,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2021-11-07 08:15:26,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,067 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:26,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 59 [2021-11-07 08:15:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,203 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:26,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 71 [2021-11-07 08:15:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,322 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:26,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 83 [2021-11-07 08:15:26,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:26,557 INFO L354 Elim1Store]: treesize reduction 473, result has 13.1 percent of original size [2021-11-07 08:15:26,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 104 [2021-11-07 08:15:26,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:15:26,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:15:26,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-07 08:15:26,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561831110] [2021-11-07 08:15:26,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:15:26,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:15:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:15:26,762 INFO L87 Difference]: Start difference. First operand 60 states and 75 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) [2021-11-07 08:15:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:27,149 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2021-11-07 08:15:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:15:27,150 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 [2021-11-07 08:15:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:27,151 INFO L225 Difference]: With dead ends: 113 [2021-11-07 08:15:27,151 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 08:15:27,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:15:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 08:15:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 67. [2021-11-07 08:15:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2021-11-07 08:15:27,160 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 25 [2021-11-07 08:15:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:27,160 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2021-11-07 08:15:27,160 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) [2021-11-07 08:15:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2021-11-07 08:15:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:27,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:27,161 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:27,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:27,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:27,385 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:27,386 INFO L85 PathProgramCache]: Analyzing trace with hash -743145795, now seen corresponding path program 1 times [2021-11-07 08:15:27,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:27,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998748603] [2021-11-07 08:15:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:27,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:27,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:27,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998748603] [2021-11-07 08:15:27,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998748603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:27,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713938057] [2021-11-07 08:15:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:27,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:27,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:27,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 08:15:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:27,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 08:15:27,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:27,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:27,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:27,788 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 29 treesize of output 28 [2021-11-07 08:15:27,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:27,812 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 29 treesize of output 28 [2021-11-07 08:15:27,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:27,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:27,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:27,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:27,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-07 08:15:28,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:28,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 28 [2021-11-07 08:15:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:15:28,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713938057] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:28,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:28,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-07 08:15:28,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343861095] [2021-11-07 08:15:28,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 08:15:28,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 08:15:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:15:28,080 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:29,145 INFO L93 Difference]: Finished difference Result 193 states and 228 transitions. [2021-11-07 08:15:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 08:15:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:15:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:29,148 INFO L225 Difference]: With dead ends: 193 [2021-11-07 08:15:29,148 INFO L226 Difference]: Without dead ends: 183 [2021-11-07 08:15:29,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=345, Invalid=1295, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:15:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-07 08:15:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 97. [2021-11-07 08:15:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.28125) internal successors, (123), 96 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 123 transitions. [2021-11-07 08:15:29,169 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 123 transitions. Word has length 25 [2021-11-07 08:15:29,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:29,170 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 123 transitions. [2021-11-07 08:15:29,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:29,170 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 123 transitions. [2021-11-07 08:15:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:29,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:29,171 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:29,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 08:15:29,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:29,389 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:29,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash -834247779, now seen corresponding path program 1 times [2021-11-07 08:15:29,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:29,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112301807] [2021-11-07 08:15:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:29,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:29,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:29,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112301807] [2021-11-07 08:15:29,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112301807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:29,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:29,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:29,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506690400] [2021-11-07 08:15:29,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:29,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:29,431 INFO L87 Difference]: Start difference. First operand 97 states and 123 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:29,462 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2021-11-07 08:15:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:29,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:15:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:29,464 INFO L225 Difference]: With dead ends: 135 [2021-11-07 08:15:29,464 INFO L226 Difference]: Without dead ends: 101 [2021-11-07 08:15:29,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-07 08:15:29,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2021-11-07 08:15:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.25) internal successors, (105), 84 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2021-11-07 08:15:29,478 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 25 [2021-11-07 08:15:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:29,478 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2021-11-07 08:15:29,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2021-11-07 08:15:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:15:29,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:29,480 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:29,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:15:29,480 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1570446589, now seen corresponding path program 1 times [2021-11-07 08:15:29,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:29,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329090130] [2021-11-07 08:15:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:29,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:29,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:29,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329090130] [2021-11-07 08:15:29,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329090130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:29,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463156680] [2021-11-07 08:15:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:29,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:29,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:29,722 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:29,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 08:15:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:29,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 08:15:29,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:29,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:29,938 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:15:29,938 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 29 treesize of output 28 [2021-11-07 08:15:29,979 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:15:29,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:15:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:30,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463156680] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:30,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:30,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-11-07 08:15:30,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353672838] [2021-11-07 08:15:30,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:15:30,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:15:30,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:15:30,232 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:31,098 INFO L93 Difference]: Finished difference Result 168 states and 200 transitions. [2021-11-07 08:15:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 08:15:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 08:15:31,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:31,100 INFO L225 Difference]: With dead ends: 168 [2021-11-07 08:15:31,100 INFO L226 Difference]: Without dead ends: 166 [2021-11-07 08:15:31,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 08:15:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-07 08:15:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 107. [2021-11-07 08:15:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 106 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2021-11-07 08:15:31,116 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 25 [2021-11-07 08:15:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:31,116 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2021-11-07 08:15:31,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2021-11-07 08:15:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 08:15:31,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:31,118 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:31,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:31,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 08:15:31,337 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1272777940, now seen corresponding path program 2 times [2021-11-07 08:15:31,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:31,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881651430] [2021-11-07 08:15:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:31,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:31,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:31,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881651430] [2021-11-07 08:15:31,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881651430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:31,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587294932] [2021-11-07 08:15:31,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:15:31,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:31,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:31,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 08:15:31,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:15:31,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:31,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:15:31,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:31,807 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 20 treesize of output 16 [2021-11-07 08:15:31,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-07 08:15:31,849 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 08:15:31,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2021-11-07 08:15:32,114 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:15:32,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-11-07 08:15:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:32,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587294932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:32,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:32,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-11-07 08:15:32,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046291517] [2021-11-07 08:15:32,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:15:32,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:32,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:15:32,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:15:32,136 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:32,635 INFO L93 Difference]: Finished difference Result 230 states and 266 transitions. [2021-11-07 08:15:32,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 08:15:32,636 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 08:15:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:32,638 INFO L225 Difference]: With dead ends: 230 [2021-11-07 08:15:32,638 INFO L226 Difference]: Without dead ends: 220 [2021-11-07 08:15:32,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:15:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-07 08:15:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 139. [2021-11-07 08:15:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.2463768115942029) internal successors, (172), 138 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) [2021-11-07 08:15:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2021-11-07 08:15:32,654 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 31 [2021-11-07 08:15:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:32,655 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2021-11-07 08:15:32,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2021-11-07 08:15:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 08:15:32,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:32,656 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:32,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:32,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 08:15:32,881 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash 89223954, now seen corresponding path program 2 times [2021-11-07 08:15:32,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:32,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844824639] [2021-11-07 08:15:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:32,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:33,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:33,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844824639] [2021-11-07 08:15:33,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844824639] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:33,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506913927] [2021-11-07 08:15:33,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:15:33,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:33,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:33,405 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:33,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 08:15:33,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:15:33,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:33,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 08:15:33,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:33,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:33,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,822 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 29 treesize of output 28 [2021-11-07 08:15:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:33,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:15:33,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:33,973 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:33,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2021-11-07 08:15:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,180 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 59 [2021-11-07 08:15:34,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,287 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:34,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 74 [2021-11-07 08:15:34,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,411 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:34,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 89 [2021-11-07 08:15:34,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,564 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:15:34,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 104 [2021-11-07 08:15:34,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:34,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,041 INFO L354 Elim1Store]: treesize reduction 626, result has 11.7 percent of original size [2021-11-07 08:15:35,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 115 treesize of output 127 [2021-11-07 08:15:35,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,381 INFO L354 Elim1Store]: treesize reduction 797, result has 10.7 percent of original size [2021-11-07 08:15:35,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 143 treesize of output 139 [2021-11-07 08:15:35,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,776 INFO L354 Elim1Store]: treesize reduction 986, result has 9.8 percent of original size [2021-11-07 08:15:35,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 161 treesize of output 151 [2021-11-07 08:15:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:36,227 INFO L354 Elim1Store]: treesize reduction 1193, result has 9.1 percent of original size [2021-11-07 08:15:36,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 191 treesize of output 169 [2021-11-07 08:15:36,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:15:36,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:15:36,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-07 08:15:36,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477029360] [2021-11-07 08:15:36,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:15:36,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:15:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2021-11-07 08:15:36,673 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:37,018 INFO L93 Difference]: Finished difference Result 209 states and 246 transitions. [2021-11-07 08:15:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:15:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 08:15:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:37,022 INFO L225 Difference]: With dead ends: 209 [2021-11-07 08:15:37,022 INFO L226 Difference]: Without dead ends: 179 [2021-11-07 08:15:37,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:15:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-07 08:15:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2021-11-07 08:15:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 116 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) [2021-11-07 08:15:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 142 transitions. [2021-11-07 08:15:37,035 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 142 transitions. Word has length 31 [2021-11-07 08:15:37,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:37,035 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 142 transitions. [2021-11-07 08:15:37,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:37,036 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 142 transitions. [2021-11-07 08:15:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 08:15:37,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:37,036 INFO L513 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] [2021-11-07 08:15:37,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:37,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 08:15:37,245 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1120990604, now seen corresponding path program 1 times [2021-11-07 08:15:37,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:37,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695871689] [2021-11-07 08:15:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:37,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 08:15:37,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:37,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695871689] [2021-11-07 08:15:37,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695871689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:37,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:37,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:37,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163753686] [2021-11-07 08:15:37,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:37,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:37,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:37,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:37,284 INFO L87 Difference]: Start difference. First operand 117 states and 142 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:37,315 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2021-11-07 08:15:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:37,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 08:15:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:37,316 INFO L225 Difference]: With dead ends: 152 [2021-11-07 08:15:37,317 INFO L226 Difference]: Without dead ends: 110 [2021-11-07 08:15:37,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-07 08:15:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2021-11-07 08:15:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 99 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2021-11-07 08:15:37,329 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 31 [2021-11-07 08:15:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:37,330 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2021-11-07 08:15:37,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2021-11-07 08:15:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 08:15:37,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:37,331 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:37,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:15:37,331 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1491632658, now seen corresponding path program 1 times [2021-11-07 08:15:37,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:37,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197260041] [2021-11-07 08:15:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:37,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:37,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:37,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197260041] [2021-11-07 08:15:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197260041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:37,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364097468] [2021-11-07 08:15:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:37,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:37,433 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:37,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 08:15:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:37,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 08:15:37,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:37,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:37,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-07 08:15:37,811 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 08:15:37,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2021-11-07 08:15:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:38,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364097468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:38,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:38,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-11-07 08:15:38,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741550985] [2021-11-07 08:15:38,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:15:38,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:15:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:15:38,074 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:38,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:38,656 INFO L93 Difference]: Finished difference Result 243 states and 282 transitions. [2021-11-07 08:15:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 08:15:38,657 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 08:15:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:38,659 INFO L225 Difference]: With dead ends: 243 [2021-11-07 08:15:38,659 INFO L226 Difference]: Without dead ends: 241 [2021-11-07 08:15:38,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 08:15:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-07 08:15:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 135. [2021-11-07 08:15:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1940298507462686) internal successors, (160), 134 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2021-11-07 08:15:38,680 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 31 [2021-11-07 08:15:38,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:38,680 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2021-11-07 08:15:38,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2021-11-07 08:15:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 08:15:38,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:38,682 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:38,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:38,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:38,889 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1223674450, now seen corresponding path program 1 times [2021-11-07 08:15:38,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:38,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740275896] [2021-11-07 08:15:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:38,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 08:15:38,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:38,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740275896] [2021-11-07 08:15:38,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740275896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:38,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:38,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:38,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036554615] [2021-11-07 08:15:38,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:38,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:38,924 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:38,959 INFO L93 Difference]: Finished difference Result 179 states and 210 transitions. [2021-11-07 08:15:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 08:15:38,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:38,961 INFO L225 Difference]: With dead ends: 179 [2021-11-07 08:15:38,961 INFO L226 Difference]: Without dead ends: 140 [2021-11-07 08:15:38,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-07 08:15:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 118. [2021-11-07 08:15:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.188034188034188) internal successors, (139), 117 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) [2021-11-07 08:15:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2021-11-07 08:15:38,979 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 31 [2021-11-07 08:15:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:38,979 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2021-11-07 08:15:38,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2021-11-07 08:15:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 08:15:38,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:38,980 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:38,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 08:15:38,981 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2136932185, now seen corresponding path program 3 times [2021-11-07 08:15:38,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:38,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770038557] [2021-11-07 08:15:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:38,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:39,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:39,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770038557] [2021-11-07 08:15:39,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770038557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:39,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434492747] [2021-11-07 08:15:39,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:15:39,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:39,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:39,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:39,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 08:15:39,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 08:15:39,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:39,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 08:15:39,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:39,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 08:15:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:39,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434492747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:39,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:39,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-11-07 08:15:39,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273692790] [2021-11-07 08:15:39,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:15:39,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:15:39,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:15:39,879 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:40,593 INFO L93 Difference]: Finished difference Result 271 states and 308 transitions. [2021-11-07 08:15:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 08:15:40,597 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 08:15:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:40,599 INFO L225 Difference]: With dead ends: 271 [2021-11-07 08:15:40,599 INFO L226 Difference]: Without dead ends: 269 [2021-11-07 08:15:40,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 08:15:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-07 08:15:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 149. [2021-11-07 08:15:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.162162162162162) internal successors, (172), 148 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) [2021-11-07 08:15:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 172 transitions. [2021-11-07 08:15:40,622 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 172 transitions. Word has length 37 [2021-11-07 08:15:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:40,622 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 172 transitions. [2021-11-07 08:15:40,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 18 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 172 transitions. [2021-11-07 08:15:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 08:15:40,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:40,624 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:40,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:40,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:40,849 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:40,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:40,850 INFO L85 PathProgramCache]: Analyzing trace with hash 234807077, now seen corresponding path program 1 times [2021-11-07 08:15:40,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:40,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343042932] [2021-11-07 08:15:40,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:40,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:41,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:41,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343042932] [2021-11-07 08:15:41,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343042932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:41,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626983223] [2021-11-07 08:15:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:41,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:41,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:41,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:41,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 08:15:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:41,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 08:15:41,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:41,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 08:15:41,711 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 27 treesize of output 19 [2021-11-07 08:15:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:41,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626983223] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:41,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:41,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 08:15:41,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459042082] [2021-11-07 08:15:41,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:15:41,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:15:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:15:41,744 INFO L87 Difference]: Start difference. First operand 149 states and 172 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 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) [2021-11-07 08:15:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:42,321 INFO L93 Difference]: Finished difference Result 213 states and 241 transitions. [2021-11-07 08:15:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:15:42,324 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 08:15:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:42,326 INFO L225 Difference]: With dead ends: 213 [2021-11-07 08:15:42,326 INFO L226 Difference]: Without dead ends: 203 [2021-11-07 08:15:42,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:15:42,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-07 08:15:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 155. [2021-11-07 08:15:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.155844155844156) internal successors, (178), 154 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2021-11-07 08:15:42,369 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 37 [2021-11-07 08:15:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:42,370 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2021-11-07 08:15:42,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 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) [2021-11-07 08:15:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2021-11-07 08:15:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 08:15:42,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:42,371 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:42,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:42,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:42,593 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash -81425862, now seen corresponding path program 4 times [2021-11-07 08:15:42,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:42,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059644792] [2021-11-07 08:15:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:42,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:42,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:42,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059644792] [2021-11-07 08:15:42,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059644792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:42,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20021307] [2021-11-07 08:15:42,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:15:42,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:42,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:42,913 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:42,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 08:15:43,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:15:43,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:43,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 08:15:43,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:43,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20021307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:43,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:43,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-11-07 08:15:43,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110543451] [2021-11-07 08:15:43,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 08:15:43,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 08:15:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:15:43,912 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:44,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:44,160 INFO L93 Difference]: Finished difference Result 268 states and 298 transitions. [2021-11-07 08:15:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:15:44,161 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 08:15:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:44,162 INFO L225 Difference]: With dead ends: 268 [2021-11-07 08:15:44,163 INFO L226 Difference]: Without dead ends: 184 [2021-11-07 08:15:44,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:15:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-07 08:15:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2021-11-07 08:15:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 164 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2021-11-07 08:15:44,188 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 43 [2021-11-07 08:15:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:44,188 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2021-11-07 08:15:44,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:44,189 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2021-11-07 08:15:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 08:15:44,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:44,190 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:44,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:44,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 08:15:44,406 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1283752644, now seen corresponding path program 1 times [2021-11-07 08:15:44,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:44,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118767051] [2021-11-07 08:15:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:44,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 08:15:44,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:44,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118767051] [2021-11-07 08:15:44,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118767051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:44,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:44,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:44,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474285293] [2021-11-07 08:15:44,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:44,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:44,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:44,433 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:44,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:44,471 INFO L93 Difference]: Finished difference Result 283 states and 320 transitions. [2021-11-07 08:15:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:44,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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 43 [2021-11-07 08:15:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:44,473 INFO L225 Difference]: With dead ends: 283 [2021-11-07 08:15:44,474 INFO L226 Difference]: Without dead ends: 202 [2021-11-07 08:15:44,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-07 08:15:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 165. [2021-11-07 08:15:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.1219512195121952) internal successors, (184), 164 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) [2021-11-07 08:15:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2021-11-07 08:15:44,498 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 43 [2021-11-07 08:15:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:44,498 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2021-11-07 08:15:44,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2021-11-07 08:15:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 08:15:44,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:44,500 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:44,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 08:15:44,500 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash 548376636, now seen corresponding path program 2 times [2021-11-07 08:15:44,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:44,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812195506] [2021-11-07 08:15:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:44,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 08:15:44,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:44,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812195506] [2021-11-07 08:15:44,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812195506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:44,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:44,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:44,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574300492] [2021-11-07 08:15:44,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:44,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:44,534 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:44,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:44,567 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2021-11-07 08:15:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:44,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 08:15:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:44,569 INFO L225 Difference]: With dead ends: 212 [2021-11-07 08:15:44,569 INFO L226 Difference]: Without dead ends: 155 [2021-11-07 08:15:44,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-07 08:15:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 136. [2021-11-07 08:15:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.1037037037037036) internal successors, (149), 135 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) [2021-11-07 08:15:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-11-07 08:15:44,587 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 43 [2021-11-07 08:15:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:44,587 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-11-07 08:15:44,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-11-07 08:15:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 08:15:44,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:44,588 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:44,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 08:15:44,589 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash -457370065, now seen corresponding path program 5 times [2021-11-07 08:15:44,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:44,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008334357] [2021-11-07 08:15:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:44,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:44,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:44,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008334357] [2021-11-07 08:15:44,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008334357] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:44,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481203863] [2021-11-07 08:15:44,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:15:44,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:44,820 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:44,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 08:15:45,268 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-07 08:15:45,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:45,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 08:15:45,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:45,342 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:45,431 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:15:45,431 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 26 treesize of output 25 [2021-11-07 08:15:45,454 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:15:45,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 25 [2021-11-07 08:15:45,482 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:15:45,482 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 26 treesize of output 25 [2021-11-07 08:15:45,506 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:15:45,506 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 29 treesize of output 28 [2021-11-07 08:15:45,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:15:45,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:15:45,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-07 08:15:45,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806172025] [2021-11-07 08:15:45,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:15:45,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:15:45,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:15:45,597 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:46,183 INFO L93 Difference]: Finished difference Result 242 states and 261 transitions. [2021-11-07 08:15:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 08:15:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 08:15:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:46,185 INFO L225 Difference]: With dead ends: 242 [2021-11-07 08:15:46,185 INFO L226 Difference]: Without dead ends: 232 [2021-11-07 08:15:46,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 08:15:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-07 08:15:46,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 176. [2021-11-07 08:15:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0971428571428572) internal successors, (192), 175 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2021-11-07 08:15:46,210 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 49 [2021-11-07 08:15:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:46,210 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2021-11-07 08:15:46,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2021-11-07 08:15:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 08:15:46,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:46,211 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:46,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:46,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 08:15:46,437 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash 221806635, now seen corresponding path program 2 times [2021-11-07 08:15:46,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:46,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244019011] [2021-11-07 08:15:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:46,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:46,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:46,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244019011] [2021-11-07 08:15:46,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244019011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:46,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318818423] [2021-11-07 08:15:46,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:15:46,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:46,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:46,648 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:46,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 08:15:47,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:15:47,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:47,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 08:15:47,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:47,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:47,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:47,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 08:15:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:47,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 08:15:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:15:47,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 08:15:47,339 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:15:47,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:15:48,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:15:48,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:15:48,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-07 08:15:48,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939833638] [2021-11-07 08:15:48,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:15:48,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:15:48,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=332, Unknown=1, NotChecked=0, Total=380 [2021-11-07 08:15:48,057 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:49,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:49,056 INFO L93 Difference]: Finished difference Result 305 states and 330 transitions. [2021-11-07 08:15:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 08:15:49,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 08:15:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:49,058 INFO L225 Difference]: With dead ends: 305 [2021-11-07 08:15:49,058 INFO L226 Difference]: Without dead ends: 295 [2021-11-07 08:15:49,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=249, Invalid=1730, Unknown=1, NotChecked=0, Total=1980 [2021-11-07 08:15:49,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-07 08:15:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 160. [2021-11-07 08:15:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.10062893081761) internal successors, (175), 159 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) [2021-11-07 08:15:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-11-07 08:15:49,082 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 49 [2021-11-07 08:15:49,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:49,082 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-11-07 08:15:49,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-11-07 08:15:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 08:15:49,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:49,083 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:49,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:49,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-07 08:15:49,293 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -433886747, now seen corresponding path program 2 times [2021-11-07 08:15:49,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:49,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484805148] [2021-11-07 08:15:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:49,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:49,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:49,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484805148] [2021-11-07 08:15:49,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484805148] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:49,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609853821] [2021-11-07 08:15:49,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:15:49,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:49,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:49,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:49,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 08:15:49,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:15:49,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:49,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 08:15:49,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:49,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:49,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-07 08:15:49,993 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:15:49,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-07 08:15:50,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-07 08:15:50,044 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:15:50,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-07 08:15:50,113 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:15:50,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-07 08:15:50,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:15:50,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:15:50,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-07 08:15:50,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424978095] [2021-11-07 08:15:50,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:15:50,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:15:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:15:50,206 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:51,101 INFO L93 Difference]: Finished difference Result 266 states and 290 transitions. [2021-11-07 08:15:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 08:15:51,101 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 08:15:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:51,103 INFO L225 Difference]: With dead ends: 266 [2021-11-07 08:15:51,103 INFO L226 Difference]: Without dead ends: 264 [2021-11-07 08:15:51,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=1483, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 08:15:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-07 08:15:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 166. [2021-11-07 08:15:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.103030303030303) internal successors, (182), 165 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) [2021-11-07 08:15:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 182 transitions. [2021-11-07 08:15:51,127 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 182 transitions. Word has length 49 [2021-11-07 08:15:51,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:51,128 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 182 transitions. [2021-11-07 08:15:51,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 182 transitions. [2021-11-07 08:15:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 08:15:51,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:51,129 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:51,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:51,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 08:15:51,357 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash -680699454, now seen corresponding path program 6 times [2021-11-07 08:15:51,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:51,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811470668] [2021-11-07 08:15:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:51,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:51,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:51,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811470668] [2021-11-07 08:15:51,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811470668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:51,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924586252] [2021-11-07 08:15:51,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:15:51,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:51,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:51,618 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:51,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 08:15:52,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-07 08:15:52,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:52,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 08:15:52,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:52,423 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 20 treesize of output 16 [2021-11-07 08:15:52,469 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:15:52,469 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 29 treesize of output 28 [2021-11-07 08:15:52,492 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 08:15:52,492 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 23 treesize of output 22 [2021-11-07 08:15:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:53,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924586252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:53,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:53,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-11-07 08:15:53,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863836270] [2021-11-07 08:15:53,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 08:15:53,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 08:15:53,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-11-07 08:15:53,293 INFO L87 Difference]: Start difference. First operand 166 states and 182 transitions. Second operand has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:55,516 INFO L93 Difference]: Finished difference Result 393 states and 425 transitions. [2021-11-07 08:15:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-07 08:15:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 08:15:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:55,519 INFO L225 Difference]: With dead ends: 393 [2021-11-07 08:15:55,519 INFO L226 Difference]: Without dead ends: 383 [2021-11-07 08:15:55,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=742, Invalid=5738, Unknown=0, NotChecked=0, Total=6480 [2021-11-07 08:15:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-07 08:15:55,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 179. [2021-11-07 08:15:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.101123595505618) internal successors, (196), 178 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 196 transitions. [2021-11-07 08:15:55,559 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 196 transitions. Word has length 55 [2021-11-07 08:15:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:55,560 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 196 transitions. [2021-11-07 08:15:55,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 196 transitions. [2021-11-07 08:15:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 08:15:55,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:55,561 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:55,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:15:55,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 08:15:55,769 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:15:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash -180908808, now seen corresponding path program 3 times [2021-11-07 08:15:55,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:55,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795552183] [2021-11-07 08:15:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:55,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:55,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:55,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795552183] [2021-11-07 08:15:55,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795552183] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:55,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856530192] [2021-11-07 08:15:55,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:15:55,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:15:55,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:15:55,961 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:15:55,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 08:15:56,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-07 08:15:56,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:15:56,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 08:15:56,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:15:56,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:15:56,662 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:15:56,662 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 29 treesize of output 28 [2021-11-07 08:15:56,685 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:15:56,685 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 29 treesize of output 28 [2021-11-07 08:15:56,730 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:15:56,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:15:57,330 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 08:15:57,330 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 52 treesize of output 28 [2021-11-07 08:15:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:15:57,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856530192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:15:57,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:15:57,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-11-07 08:15:57,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224665032] [2021-11-07 08:15:57,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 08:15:57,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 08:15:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:15:57,384 INFO L87 Difference]: Start difference. First operand 179 states and 196 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:00,575 INFO L93 Difference]: Finished difference Result 402 states and 438 transitions. [2021-11-07 08:16:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-07 08:16:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 08:16:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:00,578 INFO L225 Difference]: With dead ends: 402 [2021-11-07 08:16:00,578 INFO L226 Difference]: Without dead ends: 392 [2021-11-07 08:16:00,582 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2699 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=835, Invalid=7721, Unknown=0, NotChecked=0, Total=8556 [2021-11-07 08:16:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-07 08:16:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 190. [2021-11-07 08:16:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.0952380952380953) internal successors, (207), 189 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 207 transitions. [2021-11-07 08:16:00,635 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 207 transitions. Word has length 55 [2021-11-07 08:16:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:00,635 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 207 transitions. [2021-11-07 08:16:00,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 207 transitions. [2021-11-07 08:16:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 08:16:00,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:00,641 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:00,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:00,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:00,868 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash -503377478, now seen corresponding path program 1 times [2021-11-07 08:16:00,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:00,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62427066] [2021-11-07 08:16:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:00,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:01,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:01,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62427066] [2021-11-07 08:16:01,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62427066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:01,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928997180] [2021-11-07 08:16:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:01,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:01,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:01,032 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:01,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 08:16:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:01,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 08:16:01,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:01,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:16:01,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-07 08:16:01,626 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:16:01,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-11-07 08:16:01,672 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:16:01,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-07 08:16:01,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:16:01,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:16:01,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-07 08:16:01,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707291339] [2021-11-07 08:16:01,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:16:01,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:16:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:16:01,769 INFO L87 Difference]: Start difference. First operand 190 states and 207 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:02,979 INFO L93 Difference]: Finished difference Result 312 states and 339 transitions. [2021-11-07 08:16:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 08:16:02,980 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 08:16:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:02,982 INFO L225 Difference]: With dead ends: 312 [2021-11-07 08:16:02,982 INFO L226 Difference]: Without dead ends: 310 [2021-11-07 08:16:02,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=2230, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 08:16:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-07 08:16:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 196. [2021-11-07 08:16:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0974358974358975) internal successors, (214), 195 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 214 transitions. [2021-11-07 08:16:03,037 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 214 transitions. Word has length 55 [2021-11-07 08:16:03,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:03,037 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 214 transitions. [2021-11-07 08:16:03,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 214 transitions. [2021-11-07 08:16:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:16:03,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:03,039 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:03,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:03,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-07 08:16:03,261 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:03,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:03,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1479318763, now seen corresponding path program 7 times [2021-11-07 08:16:03,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:03,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807230511] [2021-11-07 08:16:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:03,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:03,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:03,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807230511] [2021-11-07 08:16:03,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807230511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:03,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666372368] [2021-11-07 08:16:03,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:16:03,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:03,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:03,493 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:03,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 08:16:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:04,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 08:16:04,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:04,197 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 20 treesize of output 16 [2021-11-07 08:16:04,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-07 08:16:04,229 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:16:04,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 67 [2021-11-07 08:16:04,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:16:04,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:16:04,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-07 08:16:04,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72486857] [2021-11-07 08:16:04,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:16:04,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:16:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:16:04,340 INFO L87 Difference]: Start difference. First operand 196 states and 214 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 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) [2021-11-07 08:16:05,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:05,377 INFO L93 Difference]: Finished difference Result 334 states and 363 transitions. [2021-11-07 08:16:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 08:16:05,378 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 08:16:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:05,380 INFO L225 Difference]: With dead ends: 334 [2021-11-07 08:16:05,380 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 08:16:05,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1933, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 08:16:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 08:16:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 208. [2021-11-07 08:16:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0966183574879227) internal successors, (227), 207 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 227 transitions. [2021-11-07 08:16:05,414 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 227 transitions. Word has length 61 [2021-11-07 08:16:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:05,414 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 227 transitions. [2021-11-07 08:16:05,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 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) [2021-11-07 08:16:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 227 transitions. [2021-11-07 08:16:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:16:05,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:05,415 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:05,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:05,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:05,625 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1987293969, now seen corresponding path program 3 times [2021-11-07 08:16:05,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:05,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628363445] [2021-11-07 08:16:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:05,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:05,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:05,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628363445] [2021-11-07 08:16:05,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628363445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:05,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282561692] [2021-11-07 08:16:05,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:16:05,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:05,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:05,800 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:05,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 08:16:06,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-07 08:16:06,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:06,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 08:16:06,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:06,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:16:06,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-07 08:16:06,536 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:16:06,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 63 [2021-11-07 08:16:06,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:16:06,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:16:06,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-07 08:16:06,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443086064] [2021-11-07 08:16:06,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:16:06,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:06,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:16:06,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:16:06,607 INFO L87 Difference]: Start difference. First operand 208 states and 227 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 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) [2021-11-07 08:16:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:08,169 INFO L93 Difference]: Finished difference Result 363 states and 394 transitions. [2021-11-07 08:16:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 08:16:08,169 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 08:16:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:08,171 INFO L225 Difference]: With dead ends: 363 [2021-11-07 08:16:08,171 INFO L226 Difference]: Without dead ends: 361 [2021-11-07 08:16:08,174 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=528, Invalid=3762, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 08:16:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-07 08:16:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 226. [2021-11-07 08:16:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.0933333333333333) internal successors, (246), 225 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) [2021-11-07 08:16:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 246 transitions. [2021-11-07 08:16:08,207 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 246 transitions. Word has length 61 [2021-11-07 08:16:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:08,208 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 246 transitions. [2021-11-07 08:16:08,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 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) [2021-11-07 08:16:08,208 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 246 transitions. [2021-11-07 08:16:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:16:08,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:08,209 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:08,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-07 08:16:08,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:08,409 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1383326248, now seen corresponding path program 8 times [2021-11-07 08:16:08,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:08,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048731550] [2021-11-07 08:16:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:08,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:08,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:08,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048731550] [2021-11-07 08:16:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048731550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:08,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403224919] [2021-11-07 08:16:08,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:16:08,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:08,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:08,613 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:08,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 08:16:09,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:16:09,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:09,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 08:16:09,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:09,401 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 23 treesize of output 19 [2021-11-07 08:16:09,893 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-07 08:16:09,893 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 48 treesize of output 26 [2021-11-07 08:16:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:09,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403224919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:09,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:16:09,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2021-11-07 08:16:09,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948567650] [2021-11-07 08:16:09,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:16:09,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:16:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:16:09,917 INFO L87 Difference]: Start difference. First operand 226 states and 246 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:16,241 INFO L93 Difference]: Finished difference Result 998 states and 1092 transitions. [2021-11-07 08:16:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2021-11-07 08:16:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 08:16:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:16,247 INFO L225 Difference]: With dead ends: 998 [2021-11-07 08:16:16,247 INFO L226 Difference]: Without dead ends: 996 [2021-11-07 08:16:16,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26667 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3923, Invalid=57333, Unknown=0, NotChecked=0, Total=61256 [2021-11-07 08:16:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-11-07 08:16:16,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 250. [2021-11-07 08:16:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.0883534136546185) internal successors, (271), 249 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 271 transitions. [2021-11-07 08:16:16,319 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 271 transitions. Word has length 67 [2021-11-07 08:16:16,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:16,319 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 271 transitions. [2021-11-07 08:16:16,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 271 transitions. [2021-11-07 08:16:16,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:16:16,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:16,321 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:16,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:16,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 08:16:16,545 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2143972188, now seen corresponding path program 2 times [2021-11-07 08:16:16,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:16,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541338315] [2021-11-07 08:16:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:16,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 14 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:16,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:16,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541338315] [2021-11-07 08:16:16,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541338315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:16,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565838739] [2021-11-07 08:16:16,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:16:16,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:16,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:16,861 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:16,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 08:16:17,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:16:17,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:17,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 08:16:17,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:17,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 08:16:18,471 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 19 [2021-11-07 08:16:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 14 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:18,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565838739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:18,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:16:18,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 29 [2021-11-07 08:16:18,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717455409] [2021-11-07 08:16:18,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 08:16:18,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 08:16:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:16:18,486 INFO L87 Difference]: Start difference. First operand 250 states and 271 transitions. Second operand has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:20,120 INFO L93 Difference]: Finished difference Result 381 states and 410 transitions. [2021-11-07 08:16:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 08:16:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:16:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:20,123 INFO L225 Difference]: With dead ends: 381 [2021-11-07 08:16:20,123 INFO L226 Difference]: Without dead ends: 371 [2021-11-07 08:16:20,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=404, Invalid=2902, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 08:16:20,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-07 08:16:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 256. [2021-11-07 08:16:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.0862745098039215) internal successors, (277), 255 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 277 transitions. [2021-11-07 08:16:20,175 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 277 transitions. Word has length 67 [2021-11-07 08:16:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:20,175 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 277 transitions. [2021-11-07 08:16:20,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 277 transitions. [2021-11-07 08:16:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 08:16:20,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:20,177 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:20,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:20,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-07 08:16:20,400 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1450211589, now seen corresponding path program 9 times [2021-11-07 08:16:20,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:20,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624764841] [2021-11-07 08:16:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:20,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 157 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:20,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:20,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624764841] [2021-11-07 08:16:20,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624764841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:20,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499813012] [2021-11-07 08:16:20,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:16:20,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:20,912 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:20,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 08:16:21,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 08:16:21,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:21,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 08:16:21,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:23,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499813012] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:23,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:16:23,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-11-07 08:16:23,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934044704] [2021-11-07 08:16:23,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 08:16:23,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 08:16:23,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=684, Unknown=0, NotChecked=0, Total=930 [2021-11-07 08:16:23,120 INFO L87 Difference]: Start difference. First operand 256 states and 277 transitions. Second operand has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 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) [2021-11-07 08:16:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:23,509 INFO L93 Difference]: Finished difference Result 515 states and 553 transitions. [2021-11-07 08:16:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:16:23,510 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 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) Word has length 73 [2021-11-07 08:16:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:23,512 INFO L225 Difference]: With dead ends: 515 [2021-11-07 08:16:23,512 INFO L226 Difference]: Without dead ends: 311 [2021-11-07 08:16:23,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 08:16:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-07 08:16:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2021-11-07 08:16:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.0771929824561404) internal successors, (307), 285 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 307 transitions. [2021-11-07 08:16:23,561 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 307 transitions. Word has length 73 [2021-11-07 08:16:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:23,562 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 307 transitions. [2021-11-07 08:16:23,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 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) [2021-11-07 08:16:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 307 transitions. [2021-11-07 08:16:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 08:16:23,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:23,563 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:23,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:23,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-07 08:16:23,777 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1483307056, now seen corresponding path program 10 times [2021-11-07 08:16:23,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:23,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931204745] [2021-11-07 08:16:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:23,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 16 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:24,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:24,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931204745] [2021-11-07 08:16:24,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931204745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:24,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933836400] [2021-11-07 08:16:24,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:16:24,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:24,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:24,197 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:24,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 08:16:25,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:16:25,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:25,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 08:16:25,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:25,379 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 20 treesize of output 16 [2021-11-07 08:16:25,425 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:16:25,426 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 29 treesize of output 28 [2021-11-07 08:16:25,450 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:16:25,451 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 29 treesize of output 28 [2021-11-07 08:16:25,471 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 08:16:25,471 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 23 treesize of output 22 [2021-11-07 08:16:26,161 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:16:26,161 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 40 treesize of output 22 [2021-11-07 08:16:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 16 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:26,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933836400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:26,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:16:26,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 34 [2021-11-07 08:16:26,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965467015] [2021-11-07 08:16:26,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 08:16:26,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:26,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 08:16:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:16:26,175 INFO L87 Difference]: Start difference. First operand 286 states and 307 transitions. Second operand has 34 states, 34 states have (on average 4.470588235294118) internal successors, (152), 34 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:29,896 INFO L93 Difference]: Finished difference Result 636 states and 681 transitions. [2021-11-07 08:16:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-07 08:16:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.470588235294118) internal successors, (152), 34 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 08:16:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:29,900 INFO L225 Difference]: With dead ends: 636 [2021-11-07 08:16:29,900 INFO L226 Difference]: Without dead ends: 626 [2021-11-07 08:16:29,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4220 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1068, Invalid=12974, Unknown=0, NotChecked=0, Total=14042 [2021-11-07 08:16:29,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-11-07 08:16:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 317. [2021-11-07 08:16:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0791139240506329) internal successors, (341), 316 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 341 transitions. [2021-11-07 08:16:29,957 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 341 transitions. Word has length 79 [2021-11-07 08:16:29,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:29,958 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 341 transitions. [2021-11-07 08:16:29,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.470588235294118) internal successors, (152), 34 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 341 transitions. [2021-11-07 08:16:29,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 08:16:29,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:29,959 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:29,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:30,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 08:16:30,170 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash 51757984, now seen corresponding path program 4 times [2021-11-07 08:16:30,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:30,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506663530] [2021-11-07 08:16:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:30,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:30,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:30,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506663530] [2021-11-07 08:16:30,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506663530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:30,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411728035] [2021-11-07 08:16:30,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:16:30,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:30,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:30,453 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:30,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 08:16:31,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:16:31,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:31,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 08:16:31,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:31,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:16:31,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-07 08:16:31,479 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:16:31,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-07 08:16:31,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-07 08:16:31,536 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:16:31,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-07 08:16:31,611 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:16:31,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-07 08:16:31,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:16:31,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:16:31,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-07 08:16:31,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342982741] [2021-11-07 08:16:31,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:16:31,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:31,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:16:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:16:31,729 INFO L87 Difference]: Start difference. First operand 317 states and 341 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:34,082 INFO L93 Difference]: Finished difference Result 480 states and 518 transitions. [2021-11-07 08:16:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-07 08:16:34,083 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 08:16:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:34,085 INFO L225 Difference]: With dead ends: 480 [2021-11-07 08:16:34,085 INFO L226 Difference]: Without dead ends: 478 [2021-11-07 08:16:34,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2178 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=703, Invalid=6269, Unknown=0, NotChecked=0, Total=6972 [2021-11-07 08:16:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-07 08:16:34,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 323. [2021-11-07 08:16:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.0807453416149069) internal successors, (348), 322 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) [2021-11-07 08:16:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 348 transitions. [2021-11-07 08:16:34,128 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 348 transitions. Word has length 79 [2021-11-07 08:16:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:34,128 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 348 transitions. [2021-11-07 08:16:34,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 348 transitions. [2021-11-07 08:16:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:16:34,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:34,130 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:34,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:34,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:34,357 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash 833517315, now seen corresponding path program 11 times [2021-11-07 08:16:34,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:34,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582516542] [2021-11-07 08:16:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:34,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:34,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:34,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582516542] [2021-11-07 08:16:34,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582516542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:34,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645302154] [2021-11-07 08:16:34,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:16:34,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:34,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:34,795 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:34,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 08:16:35,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-07 08:16:35,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:35,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 08:16:35,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:35,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:16:36,042 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:16:36,043 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 26 treesize of output 25 [2021-11-07 08:16:36,100 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:16:36,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:16:36,169 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:16:36,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:16:36,258 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:16:36,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:16:36,498 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:16:36,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 90 [2021-11-07 08:16:36,646 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:16:36,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 102 [2021-11-07 08:16:36,854 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:16:36,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 97 treesize of output 114 [2021-11-07 08:16:37,118 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:16:37,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 109 treesize of output 129 [2021-11-07 08:16:41,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:16:41,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:16:41,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-07 08:16:41,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70507868] [2021-11-07 08:16:41,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:16:41,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:41,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:16:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=972, Unknown=2, NotChecked=0, Total=1056 [2021-11-07 08:16:41,379 INFO L87 Difference]: Start difference. First operand 323 states and 348 transitions. Second operand has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:42,518 INFO L93 Difference]: Finished difference Result 503 states and 534 transitions. [2021-11-07 08:16:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 08:16:42,518 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:16:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:42,520 INFO L225 Difference]: With dead ends: 503 [2021-11-07 08:16:42,520 INFO L226 Difference]: Without dead ends: 493 [2021-11-07 08:16:42,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=307, Invalid=3597, Unknown=2, NotChecked=0, Total=3906 [2021-11-07 08:16:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-07 08:16:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 380. [2021-11-07 08:16:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.0765171503957784) internal successors, (408), 379 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 408 transitions. [2021-11-07 08:16:42,580 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 408 transitions. Word has length 85 [2021-11-07 08:16:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:42,580 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 408 transitions. [2021-11-07 08:16:42,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.25) internal successors, (85), 20 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 408 transitions. [2021-11-07 08:16:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:16:42,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:16:42,582 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:42,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:42,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-07 08:16:42,790 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:16:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash -173121891, now seen corresponding path program 3 times [2021-11-07 08:16:42,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:42,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310448746] [2021-11-07 08:16:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:42,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 16 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:43,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:43,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310448746] [2021-11-07 08:16:43,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310448746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:43,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451798785] [2021-11-07 08:16:43,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:16:43,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:43,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:16:43,237 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:16:43,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 08:16:44,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 08:16:44,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:16:44,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 08:16:44,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:44,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:16:44,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,635 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 29 treesize of output 28 [2021-11-07 08:16:44,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:44,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:16:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:44,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2021-11-07 08:16:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:44,977 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:44,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2021-11-07 08:16:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,109 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:45,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 88 [2021-11-07 08:16:45,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,219 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:45,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 103 [2021-11-07 08:16:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,365 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:45,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 118 [2021-11-07 08:16:45,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,674 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:45,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 113 treesize of output 133 [2021-11-07 08:16:45,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,829 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:45,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 125 treesize of output 148 [2021-11-07 08:16:45,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:45,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,030 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:46,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 137 treesize of output 163 [2021-11-07 08:16:46,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,280 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:46,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 149 treesize of output 178 [2021-11-07 08:16:46,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,822 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:46,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 128 treesize of output 152 [2021-11-07 08:16:46,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:46,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,044 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:47,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 91 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 159 treesize of output 164 [2021-11-07 08:16:47,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,275 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:47,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 105 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 186 treesize of output 176 [2021-11-07 08:16:47,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:16:47,565 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:16:47,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 120 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 225 treesize of output 194 [2021-11-07 08:16:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 16 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:53,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451798785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:16:53,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:16:53,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 38] total 57 [2021-11-07 08:16:53,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781465321] [2021-11-07 08:16:53,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-07 08:16:53,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-07 08:16:53,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2999, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 08:16:53,832 INFO L87 Difference]: Start difference. First operand 380 states and 408 transitions. Second operand has 57 states, 57 states have (on average 2.8947368421052633) internal successors, (165), 57 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) [2021-11-07 08:17:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:17:09,910 INFO L93 Difference]: Finished difference Result 570 states and 607 transitions. [2021-11-07 08:17:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-07 08:17:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.8947368421052633) internal successors, (165), 57 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 85 [2021-11-07 08:17:09,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:17:09,913 INFO L225 Difference]: With dead ends: 570 [2021-11-07 08:17:09,913 INFO L226 Difference]: Without dead ends: 560 [2021-11-07 08:17:09,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6596 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=1802, Invalid=19660, Unknown=0, NotChecked=0, Total=21462 [2021-11-07 08:17:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-07 08:17:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 380. [2021-11-07 08:17:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.0765171503957784) internal successors, (408), 379 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 408 transitions. [2021-11-07 08:17:09,974 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 408 transitions. Word has length 85 [2021-11-07 08:17:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:17:09,974 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 408 transitions. [2021-11-07 08:17:09,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.8947368421052633) internal successors, (165), 57 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) [2021-11-07 08:17:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 408 transitions. [2021-11-07 08:17:09,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:17:09,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:17:09,976 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:17:10,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 08:17:10,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 08:17:10,180 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:17:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:17:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash 610245309, now seen corresponding path program 4 times [2021-11-07 08:17:10,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:17:10,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565695512] [2021-11-07 08:17:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:17:10,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:17:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:17:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:10,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:17:10,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565695512] [2021-11-07 08:17:10,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565695512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:10,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476681092] [2021-11-07 08:17:10,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:17:10,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:17:10,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:17:10,605 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:17:10,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 08:17:11,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:17:11,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:17:11,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 08:17:11,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:17:12,200 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 20 treesize of output 16 [2021-11-07 08:17:12,241 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:17:12,241 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 29 treesize of output 28 [2021-11-07 08:17:12,292 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:17:12,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:17:13,859 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 08:17:13,860 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 52 treesize of output 28 [2021-11-07 08:17:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:17:13,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476681092] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:13,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:17:13,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 38 [2021-11-07 08:17:13,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469580144] [2021-11-07 08:17:13,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 08:17:13,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:17:13,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 08:17:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1281, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 08:17:13,883 INFO L87 Difference]: Start difference. First operand 380 states and 408 transitions. Second operand has 38 states, 38 states have (on average 4.315789473684211) internal successors, (164), 38 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:17:17,164 INFO L93 Difference]: Finished difference Result 634 states and 675 transitions. [2021-11-07 08:17:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-07 08:17:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.315789473684211) internal successors, (164), 38 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:17:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:17:17,167 INFO L225 Difference]: With dead ends: 634 [2021-11-07 08:17:17,167 INFO L226 Difference]: Without dead ends: 624 [2021-11-07 08:17:17,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3349 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=996, Invalid=9716, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 08:17:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-11-07 08:17:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 380. [2021-11-07 08:17:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.0765171503957784) internal successors, (408), 379 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 408 transitions. [2021-11-07 08:17:17,247 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 408 transitions. Word has length 85 [2021-11-07 08:17:17,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:17:17,247 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 408 transitions. [2021-11-07 08:17:17,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.315789473684211) internal successors, (164), 38 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 408 transitions. [2021-11-07 08:17:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:17:17,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:17:17,249 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:17:17,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 08:17:17,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:17:17,465 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:17:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:17:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1016041869, now seen corresponding path program 5 times [2021-11-07 08:17:17,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:17:17,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848132] [2021-11-07 08:17:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:17:17,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:17:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:17:17,886 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 66 proven. 205 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:17:17,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:17:17,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848132] [2021-11-07 08:17:17,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848132] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:17:17,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716561541] [2021-11-07 08:17:17,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:17:17,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:17:17,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:17:17,889 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:17:17,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 08:17:19,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-07 08:17:19,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:17:19,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 08:17:19,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:17:19,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:17:19,756 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:17:19,757 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 29 treesize of output 28 [2021-11-07 08:17:19,853 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 08:17:19,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 08:17:19,927 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-07 08:17:19,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-11-07 08:17:20,010 INFO L354 Elim1Store]: treesize reduction 236, result has 15.4 percent of original size [2021-11-07 08:17:20,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-11-07 08:17:20,108 INFO L354 Elim1Store]: treesize reduction 343, result has 13.8 percent of original size [2021-11-07 08:17:20,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 82 [2021-11-07 08:17:20,401 INFO L354 Elim1Store]: treesize reduction 468, result has 12.5 percent of original size [2021-11-07 08:17:20,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 105 [2021-11-07 08:17:20,594 INFO L354 Elim1Store]: treesize reduction 611, result has 11.4 percent of original size [2021-11-07 08:17:20,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 117 [2021-11-07 08:17:20,847 INFO L354 Elim1Store]: treesize reduction 772, result has 10.5 percent of original size [2021-11-07 08:17:20,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 112 treesize of output 132 [2021-11-07 08:17:21,131 INFO L354 Elim1Store]: treesize reduction 951, result has 9.8 percent of original size [2021-11-07 08:17:21,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 124 treesize of output 147 [2021-11-07 08:17:42,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:17:42,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:17:42,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-07 08:17:42,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745515449] [2021-11-07 08:17:42,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:17:42,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:17:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:17:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=892, Unknown=10, NotChecked=0, Total=992 [2021-11-07 08:17:42,147 INFO L87 Difference]: Start difference. First operand 380 states and 408 transitions. Second operand has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 19 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:18:02,009 INFO L93 Difference]: Finished difference Result 481 states and 521 transitions. [2021-11-07 08:18:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 08:18:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 19 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:18:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:18:02,011 INFO L225 Difference]: With dead ends: 481 [2021-11-07 08:18:02,011 INFO L226 Difference]: Without dead ends: 471 [2021-11-07 08:18:02,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=609, Invalid=4484, Unknown=19, NotChecked=0, Total=5112 [2021-11-07 08:18:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-07 08:18:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 380. [2021-11-07 08:18:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.0738786279683377) internal successors, (407), 379 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 407 transitions. [2021-11-07 08:18:02,061 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 407 transitions. Word has length 85 [2021-11-07 08:18:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:18:02,061 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 407 transitions. [2021-11-07 08:18:02,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 19 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 407 transitions. [2021-11-07 08:18:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:18:02,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:18:02,063 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:18:02,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:02,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:02,263 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:18:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1409068879, now seen corresponding path program 6 times [2021-11-07 08:18:02,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:02,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124317805] [2021-11-07 08:18:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:02,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 18 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:02,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:02,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124317805] [2021-11-07 08:18:02,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124317805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:02,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145308317] [2021-11-07 08:18:02,586 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:18:02,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:02,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:02,587 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:02,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 08:18:04,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-07 08:18:04,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:18:04,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 08:18:04,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:04,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:18:04,444 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:18:04,444 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 29 treesize of output 28 [2021-11-07 08:18:04,548 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:18:04,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:18:04,635 INFO L354 Elim1Store]: treesize reduction 177, result has 17.3 percent of original size [2021-11-07 08:18:04,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 58 [2021-11-07 08:18:04,725 INFO L354 Elim1Store]: treesize reduction 272, result has 15.3 percent of original size [2021-11-07 08:18:04,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 73 [2021-11-07 08:18:04,838 INFO L354 Elim1Store]: treesize reduction 385, result has 13.7 percent of original size [2021-11-07 08:18:04,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 88 [2021-11-07 08:18:05,062 INFO L354 Elim1Store]: treesize reduction 372, result has 12.9 percent of original size [2021-11-07 08:18:05,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 71 treesize of output 85 [2021-11-07 08:18:05,252 INFO L354 Elim1Store]: treesize reduction 503, result has 11.8 percent of original size [2021-11-07 08:18:05,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 97 [2021-11-07 08:18:05,437 INFO L354 Elim1Store]: treesize reduction 652, result has 10.8 percent of original size [2021-11-07 08:18:05,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 92 treesize of output 112 [2021-11-07 08:18:05,682 INFO L354 Elim1Store]: treesize reduction 819, result has 10.0 percent of original size [2021-11-07 08:18:05,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 107 treesize of output 130 [2021-11-07 08:18:05,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:18:05,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:18:05,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-07 08:18:05,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430984759] [2021-11-07 08:18:05,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:18:05,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:18:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 08:18:05,851 INFO L87 Difference]: Start difference. First operand 380 states and 407 transitions. Second operand has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:18:08,394 INFO L93 Difference]: Finished difference Result 630 states and 673 transitions. [2021-11-07 08:18:08,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-07 08:18:08,394 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:18:08,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:18:08,396 INFO L225 Difference]: With dead ends: 630 [2021-11-07 08:18:08,396 INFO L226 Difference]: Without dead ends: 620 [2021-11-07 08:18:08,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=835, Invalid=8285, Unknown=0, NotChecked=0, Total=9120 [2021-11-07 08:18:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-07 08:18:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 340. [2021-11-07 08:18:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.0766961651917404) internal successors, (365), 339 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 365 transitions. [2021-11-07 08:18:08,461 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 365 transitions. Word has length 85 [2021-11-07 08:18:08,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:18:08,461 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 365 transitions. [2021-11-07 08:18:08,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:08,461 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 365 transitions. [2021-11-07 08:18:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 08:18:08,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:18:08,463 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:18:08,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:08,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-07 08:18:08,665 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:18:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash 259433527, now seen corresponding path program 2 times [2021-11-07 08:18:08,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:08,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41864129] [2021-11-07 08:18:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:08,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 66 proven. 23 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-07 08:18:09,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:09,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41864129] [2021-11-07 08:18:09,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41864129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:09,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170238104] [2021-11-07 08:18:09,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:18:09,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:09,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:09,113 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:09,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 08:18:10,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:18:10,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:18:10,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 08:18:10,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:10,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:18:10,767 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:18:10,767 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 29 treesize of output 28 [2021-11-07 08:18:10,806 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:18:10,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:18:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:11,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170238104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:11,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:18:11,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20] total 30 [2021-11-07 08:18:11,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650352527] [2021-11-07 08:18:11,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 08:18:11,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:11,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 08:18:11,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:18:11,941 INFO L87 Difference]: Start difference. First operand 340 states and 365 transitions. Second operand has 30 states, 30 states have (on average 4.166666666666667) internal successors, (125), 30 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:18:15,544 INFO L93 Difference]: Finished difference Result 615 states and 667 transitions. [2021-11-07 08:18:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-07 08:18:15,544 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.166666666666667) internal successors, (125), 30 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 08:18:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:18:15,546 INFO L225 Difference]: With dead ends: 615 [2021-11-07 08:18:15,547 INFO L226 Difference]: Without dead ends: 563 [2021-11-07 08:18:15,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=804, Invalid=5838, Unknown=0, NotChecked=0, Total=6642 [2021-11-07 08:18:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-07 08:18:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 352. [2021-11-07 08:18:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.0712250712250713) internal successors, (376), 351 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 376 transitions. [2021-11-07 08:18:15,637 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 376 transitions. Word has length 85 [2021-11-07 08:18:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:18:15,638 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 376 transitions. [2021-11-07 08:18:15,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.166666666666667) internal successors, (125), 30 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 376 transitions. [2021-11-07 08:18:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:18:15,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:18:15,639 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:18:15,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-07 08:18:15,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-07 08:18:15,853 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:18:15,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 276810646, now seen corresponding path program 12 times [2021-11-07 08:18:15,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:15,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49634537] [2021-11-07 08:18:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:15,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 20 proven. 311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:16,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:16,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49634537] [2021-11-07 08:18:16,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49634537] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:16,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826176382] [2021-11-07 08:18:16,199 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:18:16,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:16,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:16,199 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:16,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 08:18:18,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-11-07 08:18:18,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:18:18,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 08:18:18,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:18,331 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 16 treesize of output 12 [2021-11-07 08:18:18,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 08:18:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,463 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:18:18,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:18:18,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:18:18,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:18:18,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:18:18,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:18:18,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:18:18,879 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:18:18,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 90 [2021-11-07 08:18:19,032 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:18:19,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 102 [2021-11-07 08:18:19,208 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:18:19,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 97 treesize of output 114 [2021-11-07 08:18:19,463 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:18:19,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 109 treesize of output 129 [2021-11-07 08:18:19,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:18:19,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:18:19,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-07 08:18:19,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34051216] [2021-11-07 08:18:19,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:18:19,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:19,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:18:19,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 08:18:19,820 INFO L87 Difference]: Start difference. First operand 352 states and 376 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:18:22,182 INFO L93 Difference]: Finished difference Result 538 states and 577 transitions. [2021-11-07 08:18:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 08:18:22,182 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 08:18:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:18:22,184 INFO L225 Difference]: With dead ends: 538 [2021-11-07 08:18:22,184 INFO L226 Difference]: Without dead ends: 528 [2021-11-07 08:18:22,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=657, Invalid=6825, Unknown=0, NotChecked=0, Total=7482 [2021-11-07 08:18:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-07 08:18:22,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 364. [2021-11-07 08:18:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.0716253443526171) internal successors, (389), 363 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 389 transitions. [2021-11-07 08:18:22,234 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 389 transitions. Word has length 91 [2021-11-07 08:18:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:18:22,234 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 389 transitions. [2021-11-07 08:18:22,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 389 transitions. [2021-11-07 08:18:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:18:22,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:18:22,235 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:18:22,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:22,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:22,436 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:18:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1674689488, now seen corresponding path program 5 times [2021-11-07 08:18:22,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:22,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248685329] [2021-11-07 08:18:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:22,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:22,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:22,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248685329] [2021-11-07 08:18:22,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248685329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:22,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036445656] [2021-11-07 08:18:22,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:18:22,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:22,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:22,760 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:22,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 08:18:24,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-07 08:18:24,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:18:24,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 08:18:24,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:25,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:18:25,104 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:18:25,105 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 29 treesize of output 28 [2021-11-07 08:18:25,205 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 08:18:25,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 08:18:25,234 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 08:18:25,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 08:18:25,264 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 08:18:25,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 08:18:25,332 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-07 08:18:25,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:18:29,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:18:29,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:18:29,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-07 08:18:29,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013299272] [2021-11-07 08:18:29,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:18:29,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:18:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=739, Unknown=1, NotChecked=0, Total=812 [2021-11-07 08:18:29,642 INFO L87 Difference]: Start difference. First operand 364 states and 389 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:18:33,063 INFO L93 Difference]: Finished difference Result 565 states and 606 transitions. [2021-11-07 08:18:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-07 08:18:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 08:18:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:18:33,066 INFO L225 Difference]: With dead ends: 565 [2021-11-07 08:18:33,066 INFO L226 Difference]: Without dead ends: 563 [2021-11-07 08:18:33,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3729 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=930, Invalid=10841, Unknown=1, NotChecked=0, Total=11772 [2021-11-07 08:18:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-07 08:18:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 382. [2021-11-07 08:18:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.0708661417322836) internal successors, (408), 381 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 408 transitions. [2021-11-07 08:18:33,140 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 408 transitions. Word has length 91 [2021-11-07 08:18:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:18:33,140 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 408 transitions. [2021-11-07 08:18:33,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 408 transitions. [2021-11-07 08:18:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 08:18:33,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:18:33,143 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:18:33,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:33,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:33,355 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:18:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:33,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1170856471, now seen corresponding path program 13 times [2021-11-07 08:18:33,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:33,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379277570] [2021-11-07 08:18:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:33,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:33,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:33,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379277570] [2021-11-07 08:18:33,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379277570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:33,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832980020] [2021-11-07 08:18:33,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:18:33,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:33,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:33,693 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:33,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 08:18:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:35,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-07 08:18:35,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:35,641 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-07 08:18:36,575 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-07 08:18:36,575 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 48 treesize of output 26 [2021-11-07 08:18:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:36,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832980020] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:36,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:18:36,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 32 [2021-11-07 08:18:36,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183801430] [2021-11-07 08:18:36,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 08:18:36,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 08:18:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:18:36,605 INFO L87 Difference]: Start difference. First operand 382 states and 408 transitions. Second operand has 32 states, 32 states have (on average 5.125) internal successors, (164), 32 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:18:56,825 INFO L93 Difference]: Finished difference Result 2016 states and 2183 transitions. [2021-11-07 08:18:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 552 states. [2021-11-07 08:18:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.125) internal successors, (164), 32 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 08:18:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:18:56,834 INFO L225 Difference]: With dead ends: 2016 [2021-11-07 08:18:56,834 INFO L226 Difference]: Without dead ends: 2014 [2021-11-07 08:18:56,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 561 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147077 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=12107, Invalid=304299, Unknown=0, NotChecked=0, Total=316406 [2021-11-07 08:18:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-11-07 08:18:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 406. [2021-11-07 08:18:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.0691358024691358) internal successors, (433), 405 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 433 transitions. [2021-11-07 08:18:56,941 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 433 transitions. Word has length 97 [2021-11-07 08:18:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:18:56,941 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 433 transitions. [2021-11-07 08:18:56,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.125) internal successors, (164), 32 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 433 transitions. [2021-11-07 08:18:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 08:18:56,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:18:56,943 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:18:56,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-07 08:18:57,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-07 08:18:57,143 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:18:57,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:57,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1260846621, now seen corresponding path program 4 times [2021-11-07 08:18:57,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:57,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516027527] [2021-11-07 08:18:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:57,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 22 proven. 373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:57,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:57,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516027527] [2021-11-07 08:18:57,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516027527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:57,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724850906] [2021-11-07 08:18:57,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:18:57,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:57,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:57,751 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:57,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 08:18:59,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:18:59,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:18:59,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 08:18:59,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:59,757 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 23 treesize of output 19 [2021-11-07 08:19:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 22 proven. 373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:01,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724850906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:01,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:19:01,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 33 [2021-11-07 08:19:01,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487024381] [2021-11-07 08:19:01,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 08:19:01,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:19:01,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 08:19:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 08:19:01,100 INFO L87 Difference]: Start difference. First operand 406 states and 433 transitions. Second operand has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 33 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) [2021-11-07 08:19:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:19:03,716 INFO L93 Difference]: Finished difference Result 600 states and 638 transitions. [2021-11-07 08:19:03,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 08:19:03,717 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 33 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 97 [2021-11-07 08:19:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:19:03,719 INFO L225 Difference]: With dead ends: 600 [2021-11-07 08:19:03,719 INFO L226 Difference]: Without dead ends: 590 [2021-11-07 08:19:03,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=557, Invalid=5923, Unknown=0, NotChecked=0, Total=6480 [2021-11-07 08:19:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-07 08:19:03,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 412. [2021-11-07 08:19:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.0681265206812651) internal successors, (439), 411 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 439 transitions. [2021-11-07 08:19:03,780 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 439 transitions. Word has length 97 [2021-11-07 08:19:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:19:03,780 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 439 transitions. [2021-11-07 08:19:03,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.909090909090909) internal successors, (162), 33 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) [2021-11-07 08:19:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 439 transitions. [2021-11-07 08:19:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 08:19:03,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:19:03,781 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:19:03,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-07 08:19:03,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-07 08:19:03,982 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:19:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:19:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -622447108, now seen corresponding path program 14 times [2021-11-07 08:19:03,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:19:03,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425298209] [2021-11-07 08:19:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:19:03,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:19:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 377 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:04,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:19:04,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425298209] [2021-11-07 08:19:04,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425298209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:04,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115117769] [2021-11-07 08:19:04,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:19:04,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:19:04,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:19:04,679 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:19:04,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 08:19:06,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:19:06,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:19:06,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 08:19:06,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:19:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 444 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:08,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115117769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:08,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:19:08,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2021-11-07 08:19:08,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145117288] [2021-11-07 08:19:08,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 08:19:08,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:19:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 08:19:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1213, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:19:08,075 INFO L87 Difference]: Start difference. First operand 412 states and 439 transitions. Second operand has 41 states, 41 states have (on average 4.853658536585366) internal successors, (199), 41 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:19:08,651 INFO L93 Difference]: Finished difference Result 797 states and 847 transitions. [2021-11-07 08:19:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 08:19:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.853658536585366) internal successors, (199), 41 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:19:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:19:08,653 INFO L225 Difference]: With dead ends: 797 [2021-11-07 08:19:08,654 INFO L226 Difference]: Without dead ends: 467 [2021-11-07 08:19:08,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=546, Invalid=1710, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 08:19:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-07 08:19:08,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 442. [2021-11-07 08:19:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.0634920634920635) internal successors, (469), 441 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 469 transitions. [2021-11-07 08:19:08,744 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 469 transitions. Word has length 103 [2021-11-07 08:19:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:19:08,745 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 469 transitions. [2021-11-07 08:19:08,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.853658536585366) internal successors, (199), 41 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 469 transitions. [2021-11-07 08:19:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 08:19:08,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:19:08,747 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:19:08,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 08:19:08,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-07 08:19:08,961 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:19:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:19:08,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1085660273, now seen corresponding path program 15 times [2021-11-07 08:19:08,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:19:08,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758146573] [2021-11-07 08:19:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:19:08,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:19:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 24 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:09,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:19:09,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758146573] [2021-11-07 08:19:09,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758146573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:09,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062997897] [2021-11-07 08:19:09,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:19:09,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:19:09,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:19:09,650 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:19:09,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 08:19:12,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-11-07 08:19:12,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:19:12,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 08:19:12,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:19:12,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:19:12,628 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:19:12,628 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 26 treesize of output 25 [2021-11-07 08:19:12,652 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:19:12,653 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 26 treesize of output 25 [2021-11-07 08:19:12,675 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:19:12,675 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 26 treesize of output 25 [2021-11-07 08:19:12,706 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:19:12,707 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 29 treesize of output 28 [2021-11-07 08:19:13,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:19:13,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:19:13,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-07 08:19:13,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016239398] [2021-11-07 08:19:13,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:19:13,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:19:13,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:19:13,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:19:13,188 INFO L87 Difference]: Start difference. First operand 442 states and 469 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:19:15,436 INFO L93 Difference]: Finished difference Result 788 states and 837 transitions. [2021-11-07 08:19:15,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 08:19:15,436 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 08:19:15,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:19:15,439 INFO L225 Difference]: With dead ends: 788 [2021-11-07 08:19:15,439 INFO L226 Difference]: Without dead ends: 778 [2021-11-07 08:19:15,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=333, Invalid=3827, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 08:19:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-11-07 08:19:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 614. [2021-11-07 08:19:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.0766721044045677) internal successors, (660), 613 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 660 transitions. [2021-11-07 08:19:15,539 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 660 transitions. Word has length 109 [2021-11-07 08:19:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:19:15,539 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 660 transitions. [2021-11-07 08:19:15,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 660 transitions. [2021-11-07 08:19:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 08:19:15,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:19:15,541 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:19:15,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-07 08:19:15,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-07 08:19:15,753 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:19:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:19:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1936246377, now seen corresponding path program 6 times [2021-11-07 08:19:15,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:19:15,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839788866] [2021-11-07 08:19:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:19:15,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:19:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 24 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:16,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:19:16,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839788866] [2021-11-07 08:19:16,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839788866] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:16,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796761847] [2021-11-07 08:19:16,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:19:16,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:19:16,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:19:16,602 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:19:16,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 08:19:19,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 08:19:19,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:19:19,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 08:19:19,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:19:19,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:19:19,809 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:19:19,809 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 26 treesize of output 25 [2021-11-07 08:19:19,872 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:19:19,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:19:19,941 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:19:19,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:19:20,028 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:19:20,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:19:20,236 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:19:20,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 93 [2021-11-07 08:19:20,388 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:19:20,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 108 [2021-11-07 08:19:20,576 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:19:20,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 123 [2021-11-07 08:19:20,819 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:19:20,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 118 treesize of output 138 [2021-11-07 08:19:21,408 INFO L354 Elim1Store]: treesize reduction 984, result has 9.7 percent of original size [2021-11-07 08:19:21,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 141 treesize of output 155 [2021-11-07 08:19:21,797 INFO L354 Elim1Store]: treesize reduction 1184, result has 9.1 percent of original size [2021-11-07 08:19:21,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 159 treesize of output 167 [2021-11-07 08:19:22,268 INFO L354 Elim1Store]: treesize reduction 1402, result has 8.5 percent of original size [2021-11-07 08:19:22,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 171 treesize of output 182 [2021-11-07 08:19:22,774 INFO L354 Elim1Store]: treesize reduction 1638, result has 8.0 percent of original size [2021-11-07 08:19:22,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 183 treesize of output 197 [2021-11-07 08:19:25,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:19:25,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:19:25,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-07 08:19:25,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178726692] [2021-11-07 08:19:25,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:19:25,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:19:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:19:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1471, Unknown=1, NotChecked=0, Total=1640 [2021-11-07 08:19:25,176 INFO L87 Difference]: Start difference. First operand 614 states and 660 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:19:27,035 INFO L93 Difference]: Finished difference Result 882 states and 941 transitions. [2021-11-07 08:19:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 08:19:27,036 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 08:19:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:19:27,039 INFO L225 Difference]: With dead ends: 882 [2021-11-07 08:19:27,039 INFO L226 Difference]: Without dead ends: 872 [2021-11-07 08:19:27,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=289, Invalid=3132, Unknown=1, NotChecked=0, Total=3422 [2021-11-07 08:19:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-07 08:19:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 466. [2021-11-07 08:19:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.064516129032258) internal successors, (495), 465 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 495 transitions. [2021-11-07 08:19:27,113 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 495 transitions. Word has length 109 [2021-11-07 08:19:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:19:27,114 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 495 transitions. [2021-11-07 08:19:27,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 495 transitions. [2021-11-07 08:19:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 08:19:27,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:19:27,115 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 9, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:19:27,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-07 08:19:27,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:19:27,341 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:19:27,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:19:27,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2037731173, now seen corresponding path program 7 times [2021-11-07 08:19:27,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:19:27,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407274138] [2021-11-07 08:19:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:19:27,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:19:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:27,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:19:27,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407274138] [2021-11-07 08:19:27,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407274138] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:27,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76447893] [2021-11-07 08:19:27,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:19:27,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:19:27,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:19:27,887 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:19:27,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 08:19:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:29,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 08:19:29,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:19:29,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:19:29,932 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:19:29,933 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 29 treesize of output 28 [2021-11-07 08:19:29,951 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:19:29,952 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 29 treesize of output 28 [2021-11-07 08:19:30,036 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:19:30,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:19:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:31,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76447893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:31,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:19:31,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 44 [2021-11-07 08:19:31,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122461121] [2021-11-07 08:19:31,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-07 08:19:31,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:19:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-07 08:19:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1740, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 08:19:31,413 INFO L87 Difference]: Start difference. First operand 466 states and 495 transitions. Second operand has 44 states, 44 states have (on average 4.886363636363637) internal successors, (215), 44 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:19:35,995 INFO L93 Difference]: Finished difference Result 782 states and 841 transitions. [2021-11-07 08:19:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-07 08:19:35,995 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.886363636363637) internal successors, (215), 44 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 08:19:35,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:19:35,998 INFO L225 Difference]: With dead ends: 782 [2021-11-07 08:19:35,998 INFO L226 Difference]: Without dead ends: 780 [2021-11-07 08:19:35,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1134, Invalid=11298, Unknown=0, NotChecked=0, Total=12432 [2021-11-07 08:19:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-11-07 08:19:36,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 472. [2021-11-07 08:19:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.0658174097664543) internal successors, (502), 471 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 502 transitions. [2021-11-07 08:19:36,085 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 502 transitions. Word has length 109 [2021-11-07 08:19:36,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:19:36,085 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 502 transitions. [2021-11-07 08:19:36,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.886363636363637) internal successors, (215), 44 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 502 transitions. [2021-11-07 08:19:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 08:19:36,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:19:36,086 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:19:36,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 08:19:36,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-07 08:19:36,286 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:19:36,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:19:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash 244639364, now seen corresponding path program 16 times [2021-11-07 08:19:36,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:19:36,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928597384] [2021-11-07 08:19:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:19:36,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:19:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 26 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:37,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:19:37,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928597384] [2021-11-07 08:19:37,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928597384] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:37,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232106606] [2021-11-07 08:19:37,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:19:37,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:19:37,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:19:37,038 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:19:37,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 08:19:39,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:19:39,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:19:39,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 08:19:39,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:19:39,501 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 20 treesize of output 16 [2021-11-07 08:19:39,547 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:19:39,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-11-07 08:19:39,605 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:19:39,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2021-11-07 08:19:41,627 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 08:19:41,627 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 58 treesize of output 28 [2021-11-07 08:19:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 26 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:41,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232106606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:41,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:19:41,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 48 [2021-11-07 08:19:41,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906020983] [2021-11-07 08:19:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 08:19:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:19:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 08:19:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2127, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 08:19:41,672 INFO L87 Difference]: Start difference. First operand 472 states and 502 transitions. Second operand has 48 states, 48 states have (on average 4.6875) internal successors, (225), 48 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:48,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:19:48,104 INFO L93 Difference]: Finished difference Result 806 states and 860 transitions. [2021-11-07 08:19:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-07 08:19:48,105 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.6875) internal successors, (225), 48 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:19:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:19:48,107 INFO L225 Difference]: With dead ends: 806 [2021-11-07 08:19:48,107 INFO L226 Difference]: Without dead ends: 796 [2021-11-07 08:19:48,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3554 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1013, Invalid=12793, Unknown=0, NotChecked=0, Total=13806 [2021-11-07 08:19:48,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-11-07 08:19:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 539. [2021-11-07 08:19:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.0762081784386617) internal successors, (579), 538 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 579 transitions. [2021-11-07 08:19:48,223 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 579 transitions. Word has length 115 [2021-11-07 08:19:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:19:48,224 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 579 transitions. [2021-11-07 08:19:48,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.6875) internal successors, (225), 48 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:19:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 579 transitions. [2021-11-07 08:19:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 08:19:48,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:19:48,225 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:19:48,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-07 08:19:48,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-11-07 08:19:48,449 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:19:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:19:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1094814084, now seen corresponding path program 7 times [2021-11-07 08:19:48,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:19:48,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855686697] [2021-11-07 08:19:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:19:48,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:19:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 26 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:49,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:19:49,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855686697] [2021-11-07 08:19:49,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855686697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:49,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391117886] [2021-11-07 08:19:49,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:19:49,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:19:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:19:49,218 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:19:49,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-07 08:19:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:19:51,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 08:19:51,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:19:51,676 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 20 treesize of output 16 [2021-11-07 08:19:51,722 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:19:51,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-07 08:19:51,831 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:19:51,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:19:53,799 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-07 08:19:53,799 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 52 treesize of output 28 [2021-11-07 08:19:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 26 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:19:53,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391117886] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:19:53,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:19:53,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 48 [2021-11-07 08:19:53,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513387695] [2021-11-07 08:19:53,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 08:19:53,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:19:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 08:19:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2130, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 08:19:53,847 INFO L87 Difference]: Start difference. First operand 539 states and 579 transitions. Second operand has 48 states, 48 states have (on average 4.6875) internal successors, (225), 48 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:01,784 INFO L93 Difference]: Finished difference Result 948 states and 1013 transitions. [2021-11-07 08:20:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-07 08:20:01,784 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.6875) internal successors, (225), 48 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:20:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:01,787 INFO L225 Difference]: With dead ends: 948 [2021-11-07 08:20:01,787 INFO L226 Difference]: Without dead ends: 938 [2021-11-07 08:20:01,788 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3505 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1024, Invalid=12782, Unknown=0, NotChecked=0, Total=13806 [2021-11-07 08:20:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-11-07 08:20:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 533. [2021-11-07 08:20:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.0751879699248121) internal successors, (572), 532 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 572 transitions. [2021-11-07 08:20:01,883 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 572 transitions. Word has length 115 [2021-11-07 08:20:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:01,883 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 572 transitions. [2021-11-07 08:20:01,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.6875) internal successors, (225), 48 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 572 transitions. [2021-11-07 08:20:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 08:20:01,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:01,885 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 10, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:01,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-07 08:20:02,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:20:02,085 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:20:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash -62885074, now seen corresponding path program 8 times [2021-11-07 08:20:02,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:02,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236843121] [2021-11-07 08:20:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:02,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 26 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:20:02,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:02,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236843121] [2021-11-07 08:20:02,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236843121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:20:02,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304145] [2021-11-07 08:20:02,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:20:02,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:20:02,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:20:02,813 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:20:02,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-07 08:20:05,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:20:05,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:20:05,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-07 08:20:05,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:20:05,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:20:05,393 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:20:05,393 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 29 treesize of output 28 [2021-11-07 08:20:05,502 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-07 08:20:05,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 08:20:05,573 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-07 08:20:05,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-11-07 08:20:05,616 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-07 08:20:05,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-11-07 08:20:05,715 INFO L354 Elim1Store]: treesize reduction 236, result has 15.4 percent of original size [2021-11-07 08:20:05,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:20:15,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:20:15,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:20:15,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-11-07 08:20:15,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447629753] [2021-11-07 08:20:15,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 08:20:15,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 08:20:15,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1076, Unknown=4, NotChecked=0, Total=1190 [2021-11-07 08:20:15,267 INFO L87 Difference]: Start difference. First operand 533 states and 572 transitions. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:17,628 INFO L93 Difference]: Finished difference Result 933 states and 1004 transitions. [2021-11-07 08:20:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 08:20:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 08:20:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:17,632 INFO L225 Difference]: With dead ends: 933 [2021-11-07 08:20:17,633 INFO L226 Difference]: Without dead ends: 923 [2021-11-07 08:20:17,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=232, Invalid=2520, Unknown=4, NotChecked=0, Total=2756 [2021-11-07 08:20:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-07 08:20:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 490. [2021-11-07 08:20:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.0674846625766872) internal successors, (522), 489 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) [2021-11-07 08:20:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 522 transitions. [2021-11-07 08:20:17,750 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 522 transitions. Word has length 115 [2021-11-07 08:20:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:17,751 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 522 transitions. [2021-11-07 08:20:17,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 522 transitions. [2021-11-07 08:20:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 08:20:17,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:17,752 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 7, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:17,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-07 08:20:17,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:20:17,965 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:20:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1004224272, now seen corresponding path program 3 times [2021-11-07 08:20:17,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:17,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259386237] [2021-11-07 08:20:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:17,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:20:18,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:18,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259386237] [2021-11-07 08:20:18,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259386237] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:20:18,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542568226] [2021-11-07 08:20:18,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:20:18,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:20:18,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:20:18,661 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:20:18,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-07 08:20:21,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-11-07 08:20:21,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:20:21,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 08:20:21,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:20:21,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:20:21,761 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:20:21,762 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 29 treesize of output 28 [2021-11-07 08:20:21,806 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:20:21,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:20:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:20:23,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542568226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:20:23,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:20:23,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 46 [2021-11-07 08:20:23,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926348092] [2021-11-07 08:20:23,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 08:20:23,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 08:20:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1911, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:20:23,292 INFO L87 Difference]: Start difference. First operand 490 states and 522 transitions. Second operand has 46 states, 46 states have (on average 4.934782608695652) internal successors, (227), 46 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:28,529 INFO L93 Difference]: Finished difference Result 778 states and 835 transitions. [2021-11-07 08:20:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-07 08:20:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.934782608695652) internal successors, (227), 46 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:20:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:28,532 INFO L225 Difference]: With dead ends: 778 [2021-11-07 08:20:28,532 INFO L226 Difference]: Without dead ends: 776 [2021-11-07 08:20:28,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1059, Invalid=11151, Unknown=0, NotChecked=0, Total=12210 [2021-11-07 08:20:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-07 08:20:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 496. [2021-11-07 08:20:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.0686868686868687) internal successors, (529), 495 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 529 transitions. [2021-11-07 08:20:28,618 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 529 transitions. Word has length 115 [2021-11-07 08:20:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:28,618 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 529 transitions. [2021-11-07 08:20:28,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.934782608695652) internal successors, (227), 46 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 529 transitions. [2021-11-07 08:20:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 08:20:28,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:28,620 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:28,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-07 08:20:28,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-07 08:20:28,821 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:20:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1533356457, now seen corresponding path program 17 times [2021-11-07 08:20:28,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:28,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027828325] [2021-11-07 08:20:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:28,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 28 proven. 614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:20:29,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:29,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027828325] [2021-11-07 08:20:29,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027828325] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:20:29,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547827539] [2021-11-07 08:20:29,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:20:29,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:20:29,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:20:29,375 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:20:29,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-07 08:20:32,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-11-07 08:20:32,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:20:32,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 08:20:32,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:20:32,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:20:33,031 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:20:33,031 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 26 treesize of output 25 [2021-11-07 08:20:33,115 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:20:33,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:20:33,216 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:20:33,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:20:33,320 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:20:33,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:20:33,618 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:20:33,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 90 [2021-11-07 08:20:33,786 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:20:33,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 102 [2021-11-07 08:20:33,993 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:20:33,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 97 treesize of output 114 [2021-11-07 08:20:34,226 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:20:34,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 109 treesize of output 129 [2021-11-07 08:20:38,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:20:38,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:20:38,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-07 08:20:38,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189054295] [2021-11-07 08:20:38,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 08:20:38,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 08:20:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1459, Unknown=2, NotChecked=0, Total=1560 [2021-11-07 08:20:38,502 INFO L87 Difference]: Start difference. First operand 496 states and 529 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:42,438 INFO L93 Difference]: Finished difference Result 724 states and 775 transitions. [2021-11-07 08:20:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-07 08:20:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-07 08:20:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:42,441 INFO L225 Difference]: With dead ends: 724 [2021-11-07 08:20:42,441 INFO L226 Difference]: Without dead ends: 714 [2021-11-07 08:20:42,442 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3830 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=981, Invalid=12127, Unknown=2, NotChecked=0, Total=13110 [2021-11-07 08:20:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-11-07 08:20:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 508. [2021-11-07 08:20:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.069033530571992) internal successors, (542), 507 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 542 transitions. [2021-11-07 08:20:42,554 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 542 transitions. Word has length 121 [2021-11-07 08:20:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:42,554 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 542 transitions. [2021-11-07 08:20:42,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 542 transitions. [2021-11-07 08:20:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 08:20:42,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:42,555 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:42,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-07 08:20:42,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-07 08:20:42,756 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:20:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1406759857, now seen corresponding path program 8 times [2021-11-07 08:20:42,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:42,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401720482] [2021-11-07 08:20:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:42,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:20:43,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:43,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401720482] [2021-11-07 08:20:43,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401720482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:20:43,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800973116] [2021-11-07 08:20:43,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:20:43,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:20:43,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:20:43,189 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:20:43,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-07 08:20:45,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:20:45,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:20:45,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 08:20:45,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:20:45,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:20:45,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-07 08:20:45,978 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:20:45,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 63 [2021-11-07 08:20:46,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:20:46,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:20:46,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-07 08:20:46,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457770260] [2021-11-07 08:20:46,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 08:20:46,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:46,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 08:20:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:20:46,054 INFO L87 Difference]: Start difference. First operand 508 states and 542 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:50,952 INFO L93 Difference]: Finished difference Result 754 states and 807 transitions. [2021-11-07 08:20:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-07 08:20:50,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-07 08:20:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:50,962 INFO L225 Difference]: With dead ends: 754 [2021-11-07 08:20:50,962 INFO L226 Difference]: Without dead ends: 752 [2021-11-07 08:20:50,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6488 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1396, Invalid=17786, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 08:20:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-07 08:20:51,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 526. [2021-11-07 08:20:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.0685714285714285) internal successors, (561), 525 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 561 transitions. [2021-11-07 08:20:51,058 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 561 transitions. Word has length 121 [2021-11-07 08:20:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:51,058 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 561 transitions. [2021-11-07 08:20:51,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:51,058 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 561 transitions. [2021-11-07 08:20:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 08:20:51,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:51,059 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:51,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-07 08:20:51,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-07 08:20:51,269 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:20:51,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:51,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1844730858, now seen corresponding path program 18 times [2021-11-07 08:20:51,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:51,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847473327] [2021-11-07 08:20:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:51,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:20:51,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:51,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847473327] [2021-11-07 08:20:51,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847473327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:20:51,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543954656] [2021-11-07 08:20:51,710 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:20:51,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:20:51,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:20:51,713 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:20:51,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-07 08:20:55,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 08:20:55,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:20:55,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 08:20:55,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:20:55,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:20:55,654 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:20:55,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 08:20:55,714 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:20:55,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:20:55,836 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:20:55,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:20:55,931 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:20:55,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:20:56,156 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:20:56,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 90 [2021-11-07 08:20:56,315 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:20:56,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 102 [2021-11-07 08:20:56,502 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:20:56,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 97 treesize of output 114 [2021-11-07 08:20:56,726 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:20:56,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 109 treesize of output 129 [2021-11-07 08:20:56,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:20:56,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:20:56,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-11-07 08:20:56,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940481298] [2021-11-07 08:20:56,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 08:20:56,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 08:20:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1448, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 08:20:56,983 INFO L87 Difference]: Start difference. First operand 526 states and 561 transitions. Second operand has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 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) [2021-11-07 08:21:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:21:02,084 INFO L93 Difference]: Finished difference Result 781 states and 835 transitions. [2021-11-07 08:21:02,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-07 08:21:02,085 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 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 127 [2021-11-07 08:21:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:02,087 INFO L225 Difference]: With dead ends: 781 [2021-11-07 08:21:02,088 INFO L226 Difference]: Without dead ends: 779 [2021-11-07 08:21:02,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1440, Invalid=22740, Unknown=0, NotChecked=0, Total=24180 [2021-11-07 08:21:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-11-07 08:21:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 550. [2021-11-07 08:21:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 1.0673952641165756) internal successors, (586), 549 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 586 transitions. [2021-11-07 08:21:02,180 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 586 transitions. Word has length 127 [2021-11-07 08:21:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:21:02,180 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 586 transitions. [2021-11-07 08:21:02,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 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) [2021-11-07 08:21:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 586 transitions. [2021-11-07 08:21:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 08:21:02,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:21:02,182 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:21:02,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-07 08:21:02,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-07 08:21:02,425 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:21:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:21:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash -230353182, now seen corresponding path program 5 times [2021-11-07 08:21:02,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:21:02,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680429068] [2021-11-07 08:21:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:21:02,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:21:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 30 proven. 700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:21:02,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:21:02,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680429068] [2021-11-07 08:21:02,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680429068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:21:02,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439151392] [2021-11-07 08:21:02,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:21:02,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:21:02,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:21:02,993 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:21:03,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-07 08:21:05,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-11-07 08:21:05,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:21:05,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 08:21:05,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:21:06,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:21:06,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-07 08:21:06,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:06,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:21:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,274 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:06,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:21:06,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:06,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:21:06,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,562 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:06,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 73 [2021-11-07 08:21:06,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,677 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:06,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 88 [2021-11-07 08:21:06,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:06,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 86 treesize of output 103 [2021-11-07 08:21:06,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:06,902 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:06,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 118 [2021-11-07 08:21:07,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,174 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:07,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 113 treesize of output 130 [2021-11-07 08:21:07,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:07,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 131 treesize of output 142 [2021-11-07 08:21:07,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,507 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:07,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 149 treesize of output 154 [2021-11-07 08:21:07,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:07,692 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:07,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 140 treesize of output 142 [2021-11-07 08:21:13,563 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:13,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 126 treesize of output 46 [2021-11-07 08:21:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 30 proven. 700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:21:13,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439151392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:21:13,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:21:13,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 39] total 63 [2021-11-07 08:21:13,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783521499] [2021-11-07 08:21:13,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-07 08:21:13,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:21:13,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-07 08:21:13,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3696, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 08:21:13,583 INFO L87 Difference]: Start difference. First operand 550 states and 586 transitions. Second operand has 63 states, 63 states have (on average 3.9365079365079363) internal successors, (248), 63 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:21:26,074 INFO L93 Difference]: Finished difference Result 852 states and 905 transitions. [2021-11-07 08:21:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-07 08:21:26,074 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.9365079365079363) internal successors, (248), 63 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-07 08:21:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:26,077 INFO L225 Difference]: With dead ends: 852 [2021-11-07 08:21:26,077 INFO L226 Difference]: Without dead ends: 842 [2021-11-07 08:21:26,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7423 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1641, Invalid=24441, Unknown=0, NotChecked=0, Total=26082 [2021-11-07 08:21:26,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-07 08:21:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 556. [2021-11-07 08:21:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 1.0666666666666667) internal successors, (592), 555 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 592 transitions. [2021-11-07 08:21:26,176 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 592 transitions. Word has length 127 [2021-11-07 08:21:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:21:26,176 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 592 transitions. [2021-11-07 08:21:26,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.9365079365079363) internal successors, (248), 63 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 592 transitions. [2021-11-07 08:21:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 08:21:26,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:21:26,178 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:21:26,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-07 08:21:26,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:21:26,393 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:21:26,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:21:26,393 INFO L85 PathProgramCache]: Analyzing trace with hash 227157821, now seen corresponding path program 19 times [2021-11-07 08:21:26,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:21:26,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421834453] [2021-11-07 08:21:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:21:26,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:21:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 693 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:21:27,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:21:27,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421834453] [2021-11-07 08:21:27,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421834453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:21:27,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395349274] [2021-11-07 08:21:27,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:21:27,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:21:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:21:27,374 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:21:27,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-07 08:21:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:30,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 08:21:30,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:21:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 784 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:21:32,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395349274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:21:32,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:21:32,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2021-11-07 08:21:32,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139222731] [2021-11-07 08:21:32,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-07 08:21:32,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:21:32,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-07 08:21:32,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=686, Invalid=1966, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 08:21:32,485 INFO L87 Difference]: Start difference. First operand 556 states and 592 transitions. Second operand has 52 states, 52 states have (on average 5.0) internal successors, (260), 52 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:21:33,131 INFO L93 Difference]: Finished difference Result 1055 states and 1123 transitions. [2021-11-07 08:21:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 08:21:33,132 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.0) internal successors, (260), 52 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 133 [2021-11-07 08:21:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:33,135 INFO L225 Difference]: With dead ends: 1055 [2021-11-07 08:21:33,135 INFO L226 Difference]: Without dead ends: 611 [2021-11-07 08:21:33,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=846, Invalid=2694, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 08:21:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-11-07 08:21:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 586. [2021-11-07 08:21:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 1.0632478632478632) internal successors, (622), 585 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 622 transitions. [2021-11-07 08:21:33,248 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 622 transitions. Word has length 133 [2021-11-07 08:21:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:21:33,248 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 622 transitions. [2021-11-07 08:21:33,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.0) internal successors, (260), 52 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 622 transitions. [2021-11-07 08:21:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 08:21:33,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:21:33,249 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:21:33,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-07 08:21:33,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:21:33,453 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:21:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:21:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash 525783794, now seen corresponding path program 20 times [2021-11-07 08:21:33,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:21:33,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455344817] [2021-11-07 08:21:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:21:33,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:21:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 32 proven. 817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:21:34,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:21:34,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455344817] [2021-11-07 08:21:34,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455344817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:21:34,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323715314] [2021-11-07 08:21:34,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:21:34,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:21:34,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:21:34,149 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:21:34,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-07 08:21:37,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:21:37,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:21:37,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 08:21:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:21:37,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:21:37,658 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:21:37,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 25 [2021-11-07 08:21:37,723 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:21:37,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:21:37,807 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:21:37,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:21:37,936 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:21:37,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:21:38,189 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:21:38,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 93 [2021-11-07 08:21:38,368 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:21:38,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 108 [2021-11-07 08:21:38,584 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:21:38,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 123 [2021-11-07 08:21:38,843 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:21:38,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 118 treesize of output 138 [2021-11-07 08:21:39,448 INFO L354 Elim1Store]: treesize reduction 984, result has 9.7 percent of original size [2021-11-07 08:21:39,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 141 treesize of output 155 [2021-11-07 08:21:39,818 INFO L354 Elim1Store]: treesize reduction 1184, result has 9.1 percent of original size [2021-11-07 08:21:39,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 159 treesize of output 167 [2021-11-07 08:21:40,266 INFO L354 Elim1Store]: treesize reduction 1402, result has 8.5 percent of original size [2021-11-07 08:21:40,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 177 treesize of output 179 [2021-11-07 08:21:40,802 INFO L354 Elim1Store]: treesize reduction 1638, result has 8.0 percent of original size [2021-11-07 08:21:40,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 189 treesize of output 194 [2021-11-07 08:21:47,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:21:47,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:21:47,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-11-07 08:21:47,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864014040] [2021-11-07 08:21:47,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 08:21:47,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:21:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 08:21:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2208, Unknown=3, NotChecked=0, Total=2352 [2021-11-07 08:21:47,026 INFO L87 Difference]: Start difference. First operand 586 states and 622 transitions. Second operand has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 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) [2021-11-07 08:21:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:21:49,729 INFO L93 Difference]: Finished difference Result 911 states and 956 transitions. [2021-11-07 08:21:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 08:21:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 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) Word has length 139 [2021-11-07 08:21:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:49,732 INFO L225 Difference]: With dead ends: 911 [2021-11-07 08:21:49,732 INFO L226 Difference]: Without dead ends: 901 [2021-11-07 08:21:49,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=516, Invalid=8987, Unknown=3, NotChecked=0, Total=9506 [2021-11-07 08:21:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-11-07 08:21:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 698. [2021-11-07 08:21:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.0616929698708752) internal successors, (740), 697 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:21:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 740 transitions. [2021-11-07 08:21:49,852 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 740 transitions. Word has length 139 [2021-11-07 08:21:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:21:49,852 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 740 transitions. [2021-11-07 08:21:49,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 29 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) [2021-11-07 08:21:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 740 transitions. [2021-11-07 08:21:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 08:21:49,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:21:49,854 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:21:49,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-07 08:21:50,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-11-07 08:21:50,054 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:21:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:21:50,055 INFO L85 PathProgramCache]: Analyzing trace with hash 153580840, now seen corresponding path program 9 times [2021-11-07 08:21:50,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:21:50,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306219846] [2021-11-07 08:21:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:21:50,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:21:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 32 proven. 817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:21:50,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:21:50,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306219846] [2021-11-07 08:21:50,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306219846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:21:50,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587744120] [2021-11-07 08:21:50,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:21:50,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:21:50,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:21:50,716 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:21:50,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-07 08:21:55,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-07 08:21:55,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:21:55,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 08:21:55,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:21:55,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:21:55,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,309 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 29 treesize of output 28 [2021-11-07 08:21:55,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:55,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 08:21:55,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:55,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-07 08:21:55,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,635 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:55,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2021-11-07 08:21:55,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:55,734 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:21:55,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 82 [2021-11-07 08:21:55,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:56,008 INFO L354 Elim1Store]: treesize reduction 456, result has 12.8 percent of original size [2021-11-07 08:21:56,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 105 [2021-11-07 08:21:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:56,200 INFO L354 Elim1Store]: treesize reduction 599, result has 11.7 percent of original size [2021-11-07 08:21:56,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 120 [2021-11-07 08:21:56,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:56,444 INFO L354 Elim1Store]: treesize reduction 760, result has 10.7 percent of original size [2021-11-07 08:21:56,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 115 treesize of output 135 [2021-11-07 08:21:56,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:56,722 INFO L354 Elim1Store]: treesize reduction 939, result has 9.9 percent of original size [2021-11-07 08:21:56,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 127 treesize of output 150 [2021-11-07 08:21:57,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:57,374 INFO L354 Elim1Store]: treesize reduction 1136, result has 9.2 percent of original size [2021-11-07 08:21:57,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 144 treesize of output 170 [2021-11-07 08:21:57,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:57,801 INFO L354 Elim1Store]: treesize reduction 1351, result has 8.6 percent of original size [2021-11-07 08:21:57,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 156 treesize of output 185 [2021-11-07 08:21:58,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:58,322 INFO L354 Elim1Store]: treesize reduction 1584, result has 8.1 percent of original size [2021-11-07 08:21:58,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 168 treesize of output 200 [2021-11-07 08:21:58,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:21:58,999 INFO L354 Elim1Store]: treesize reduction 1835, result has 7.6 percent of original size [2021-11-07 08:21:59,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 180 treesize of output 215 [2021-11-07 08:21:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:00,290 INFO L354 Elim1Store]: treesize reduction 2104, result has 7.2 percent of original size [2021-11-07 08:22:00,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 212 treesize of output 232 [2021-11-07 08:22:00,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:01,231 INFO L354 Elim1Store]: treesize reduction 2391, result has 6.8 percent of original size [2021-11-07 08:22:01,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 1 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 239 treesize of output 244 [2021-11-07 08:22:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:02,639 INFO L354 Elim1Store]: treesize reduction 2696, result has 6.5 percent of original size [2021-11-07 08:22:02,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 1 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 136 case distinctions, treesize of input 251 treesize of output 259 [2021-11-07 08:22:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:03,902 INFO L354 Elim1Store]: treesize reduction 3019, result has 6.2 percent of original size [2021-11-07 08:22:03,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 1 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 153 case distinctions, treesize of input 263 treesize of output 274 [2021-11-07 08:22:08,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:22:08,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:22:08,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-11-07 08:22:08,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815422500] [2021-11-07 08:22:08,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 08:22:08,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:22:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 08:22:08,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2439, Unknown=1, NotChecked=0, Total=2652 [2021-11-07 08:22:08,581 INFO L87 Difference]: Start difference. First operand 698 states and 740 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 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) [2021-11-07 08:22:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:22:15,034 INFO L93 Difference]: Finished difference Result 1067 states and 1131 transitions. [2021-11-07 08:22:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-11-07 08:22:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 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) Word has length 139 [2021-11-07 08:22:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:22:15,038 INFO L225 Difference]: With dead ends: 1067 [2021-11-07 08:22:15,038 INFO L226 Difference]: Without dead ends: 1057 [2021-11-07 08:22:15,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8432 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1780, Invalid=23341, Unknown=1, NotChecked=0, Total=25122 [2021-11-07 08:22:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-11-07 08:22:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 610. [2021-11-07 08:22:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.064039408866995) internal successors, (648), 609 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:22:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 648 transitions. [2021-11-07 08:22:15,151 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 648 transitions. Word has length 139 [2021-11-07 08:22:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:22:15,151 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 648 transitions. [2021-11-07 08:22:15,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 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) [2021-11-07 08:22:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 648 transitions. [2021-11-07 08:22:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 08:22:15,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:22:15,152 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 13, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:22:15,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-07 08:22:15,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:22:15,357 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:22:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:22:15,357 INFO L85 PathProgramCache]: Analyzing trace with hash 307327512, now seen corresponding path program 9 times [2021-11-07 08:22:15,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:22:15,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103346485] [2021-11-07 08:22:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:22:15,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:22:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:22:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 0 proven. 849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:22:15,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:22:15,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103346485] [2021-11-07 08:22:15,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103346485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:22:15,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50371115] [2021-11-07 08:22:15,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:22:15,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:22:15,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:22:15,980 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:22:16,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-07 08:22:20,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-07 08:22:20,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:22:20,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 08:22:20,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:22:20,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:22:20,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,525 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 29 treesize of output 28 [2021-11-07 08:22:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:22:20,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-11-07 08:22:20,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:22:20,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-07 08:22:20,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,787 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:22:20,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2021-11-07 08:22:20,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:20,882 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 08:22:20,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 82 [2021-11-07 08:22:21,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:21,165 INFO L354 Elim1Store]: treesize reduction 456, result has 12.8 percent of original size [2021-11-07 08:22:21,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 105 [2021-11-07 08:22:21,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:21,365 INFO L354 Elim1Store]: treesize reduction 599, result has 11.7 percent of original size [2021-11-07 08:22:21,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 120 [2021-11-07 08:22:21,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:21,624 INFO L354 Elim1Store]: treesize reduction 760, result has 10.7 percent of original size [2021-11-07 08:22:21,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 115 treesize of output 135 [2021-11-07 08:22:21,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:21,908 INFO L354 Elim1Store]: treesize reduction 939, result has 9.9 percent of original size [2021-11-07 08:22:21,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 127 treesize of output 150 [2021-11-07 08:22:22,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:22,576 INFO L354 Elim1Store]: treesize reduction 1136, result has 9.2 percent of original size [2021-11-07 08:22:22,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 144 treesize of output 170 [2021-11-07 08:22:22,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:23,030 INFO L354 Elim1Store]: treesize reduction 1351, result has 8.6 percent of original size [2021-11-07 08:22:23,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 156 treesize of output 185 [2021-11-07 08:22:23,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:23,576 INFO L354 Elim1Store]: treesize reduction 1584, result has 8.1 percent of original size [2021-11-07 08:22:23,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 168 treesize of output 200 [2021-11-07 08:22:23,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:24,245 INFO L354 Elim1Store]: treesize reduction 1835, result has 7.6 percent of original size [2021-11-07 08:22:24,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 180 treesize of output 215 [2021-11-07 08:22:24,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:25,461 INFO L354 Elim1Store]: treesize reduction 2104, result has 7.2 percent of original size [2021-11-07 08:22:25,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 197 treesize of output 235 [2021-11-07 08:22:25,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:26,393 INFO L354 Elim1Store]: treesize reduction 2391, result has 6.8 percent of original size [2021-11-07 08:22:26,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 1 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 224 treesize of output 247 [2021-11-07 08:22:26,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:27,606 INFO L354 Elim1Store]: treesize reduction 2696, result has 6.5 percent of original size [2021-11-07 08:22:27,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 1 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 136 case distinctions, treesize of input 236 treesize of output 262 [2021-11-07 08:22:28,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:22:29,248 INFO L354 Elim1Store]: treesize reduction 3019, result has 6.2 percent of original size [2021-11-07 08:22:29,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 1 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 153 case distinctions, treesize of input 248 treesize of output 277 [2021-11-07 08:22:33,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:22:33,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:22:33,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-11-07 08:22:33,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011891155] [2021-11-07 08:22:33,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 08:22:33,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:22:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 08:22:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2429, Unknown=1, NotChecked=0, Total=2652 [2021-11-07 08:22:33,935 INFO L87 Difference]: Start difference. First operand 610 states and 648 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 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) [2021-11-07 08:22:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:22:41,383 INFO L93 Difference]: Finished difference Result 877 states and 937 transitions. [2021-11-07 08:22:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2021-11-07 08:22:41,384 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 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) Word has length 139 [2021-11-07 08:22:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:22:41,387 INFO L225 Difference]: With dead ends: 877 [2021-11-07 08:22:41,387 INFO L226 Difference]: Without dead ends: 875 [2021-11-07 08:22:41,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11986 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2013, Invalid=32026, Unknown=1, NotChecked=0, Total=34040 [2021-11-07 08:22:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-07 08:22:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 616. [2021-11-07 08:22:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.065040650406504) internal successors, (655), 615 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:22:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 655 transitions. [2021-11-07 08:22:41,522 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 655 transitions. Word has length 139 [2021-11-07 08:22:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:22:41,523 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 655 transitions. [2021-11-07 08:22:41,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 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) [2021-11-07 08:22:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 655 transitions. [2021-11-07 08:22:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:22:41,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:22:41,525 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:22:41,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-07 08:22:41,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:22:41,746 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:22:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:22:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1512650821, now seen corresponding path program 21 times [2021-11-07 08:22:41,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:22:41,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467941681] [2021-11-07 08:22:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:22:41,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:22:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:22:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 34 proven. 915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:22:42,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:22:42,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467941681] [2021-11-07 08:22:42,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467941681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:22:42,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976156987] [2021-11-07 08:22:42,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:22:42,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:22:42,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:22:42,402 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:22:42,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-07 08:22:47,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-11-07 08:22:47,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:22:47,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 08:22:47,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:22:47,694 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 20 treesize of output 16 [2021-11-07 08:22:47,742 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:22:47,743 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 29 treesize of output 28 [2021-11-07 08:22:47,796 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 08:22:47,796 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 23 treesize of output 22 [2021-11-07 08:22:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 34 proven. 915 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:22:49,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976156987] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:22:49,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:22:49,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 56 [2021-11-07 08:22:49,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962059580] [2021-11-07 08:22:49,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-07 08:22:49,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:22:49,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-07 08:22:49,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2933, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 08:22:49,714 INFO L87 Difference]: Start difference. First operand 616 states and 655 transitions. Second operand has 56 states, 56 states have (on average 5.089285714285714) internal successors, (285), 56 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) [2021-11-07 08:23:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:23:04,387 INFO L93 Difference]: Finished difference Result 1462 states and 1558 transitions. [2021-11-07 08:23:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2021-11-07 08:23:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.089285714285714) internal successors, (285), 56 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 145 [2021-11-07 08:23:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:23:04,394 INFO L225 Difference]: With dead ends: 1462 [2021-11-07 08:23:04,394 INFO L226 Difference]: Without dead ends: 1452 [2021-11-07 08:23:04,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18481 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2681, Invalid=53251, Unknown=0, NotChecked=0, Total=55932 [2021-11-07 08:23:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-11-07 08:23:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 647. [2021-11-07 08:23:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.068111455108359) internal successors, (690), 646 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 690 transitions. [2021-11-07 08:23:04,550 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 690 transitions. Word has length 145 [2021-11-07 08:23:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:23:04,551 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 690 transitions. [2021-11-07 08:23:04,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.089285714285714) internal successors, (285), 56 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) [2021-11-07 08:23:04,551 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 690 transitions. [2021-11-07 08:23:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 08:23:04,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:23:04,552 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 11, 7, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:23:04,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-11-07 08:23:04,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-11-07 08:23:04,753 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:23:04,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:23:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1771321169, now seen corresponding path program 4 times [2021-11-07 08:23:04,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:23:04,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102825014] [2021-11-07 08:23:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:23:04,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:23:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:23:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 949 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:23:05,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:23:05,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102825014] [2021-11-07 08:23:05,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102825014] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:23:05,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247126775] [2021-11-07 08:23:05,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:23:05,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:23:05,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:23:05,509 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:23:05,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-07 08:23:09,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:23:09,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:23:09,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-07 08:23:09,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:23:09,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:23:09,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-07 08:23:09,351 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:23:09,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-11-07 08:23:09,420 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:23:09,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-07 08:23:09,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:23:09,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:23:09,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-11-07 08:23:09,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821840596] [2021-11-07 08:23:09,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 08:23:09,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:23:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 08:23:09,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2021-11-07 08:23:09,522 INFO L87 Difference]: Start difference. First operand 647 states and 690 transitions. Second operand has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:23:16,590 INFO L93 Difference]: Finished difference Result 924 states and 989 transitions. [2021-11-07 08:23:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2021-11-07 08:23:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have 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 [2021-11-07 08:23:16,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:23:16,593 INFO L225 Difference]: With dead ends: 924 [2021-11-07 08:23:16,593 INFO L226 Difference]: Without dead ends: 922 [2021-11-07 08:23:16,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9093 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1787, Invalid=24945, Unknown=0, NotChecked=0, Total=26732 [2021-11-07 08:23:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-11-07 08:23:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 653. [2021-11-07 08:23:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.0690184049079754) internal successors, (697), 652 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 697 transitions. [2021-11-07 08:23:16,753 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 697 transitions. Word has length 145 [2021-11-07 08:23:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:23:16,753 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 697 transitions. [2021-11-07 08:23:16,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 697 transitions. [2021-11-07 08:23:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 08:23:16,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:23:16,754 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:23:16,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-07 08:23:16,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-11-07 08:23:16,955 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:23:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:23:16,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1417604264, now seen corresponding path program 22 times [2021-11-07 08:23:16,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:23:16,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257844334] [2021-11-07 08:23:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:23:16,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:23:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:23:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 36 proven. 1019 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:23:17,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:23:17,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257844334] [2021-11-07 08:23:17,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257844334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:23:17,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568093559] [2021-11-07 08:23:17,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:23:17,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:23:17,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:23:17,751 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:23:17,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-07 08:23:21,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:23:21,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:23:21,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 08:23:21,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:23:21,668 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 20 treesize of output 16 [2021-11-07 08:23:21,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-07 08:23:21,694 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:23:21,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 67 [2021-11-07 08:23:21,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:23:21,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:23:21,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-11-07 08:23:21,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473405221] [2021-11-07 08:23:21,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 08:23:21,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:23:21,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 08:23:21,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1113, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:23:21,805 INFO L87 Difference]: Start difference. First operand 653 states and 697 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:23:28,360 INFO L93 Difference]: Finished difference Result 1034 states and 1099 transitions. [2021-11-07 08:23:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-07 08:23:28,360 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-07 08:23:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:23:28,362 INFO L225 Difference]: With dead ends: 1034 [2021-11-07 08:23:28,362 INFO L226 Difference]: Without dead ends: 1024 [2021-11-07 08:23:28,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4681 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1339, Invalid=15431, Unknown=0, NotChecked=0, Total=16770 [2021-11-07 08:23:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-11-07 08:23:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 771. [2021-11-07 08:23:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.0623376623376624) internal successors, (818), 770 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 818 transitions. [2021-11-07 08:23:28,557 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 818 transitions. Word has length 151 [2021-11-07 08:23:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:23:28,557 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 818 transitions. [2021-11-07 08:23:28,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 818 transitions. [2021-11-07 08:23:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 08:23:28,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:23:28,559 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:23:28,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-07 08:23:28,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:23:28,759 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:23:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:23:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash -976044050, now seen corresponding path program 6 times [2021-11-07 08:23:28,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:23:28,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741770155] [2021-11-07 08:23:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:23:28,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:23:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:23:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 34 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:23:29,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:23:29,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741770155] [2021-11-07 08:23:29,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741770155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:23:29,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769198653] [2021-11-07 08:23:29,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:23:29,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:23:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:23:29,908 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:23:29,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-07 08:23:37,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-11-07 08:23:37,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:23:37,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-07 08:23:37,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:23:38,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:23:38,316 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:23:38,317 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 29 treesize of output 28 [2021-11-07 08:23:38,405 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:23:38,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:23:38,620 INFO L354 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2021-11-07 08:23:38,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 49 [2021-11-07 08:23:38,675 INFO L354 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2021-11-07 08:23:38,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 49 [2021-11-07 08:23:38,802 INFO L354 Elim1Store]: treesize reduction 218, result has 15.5 percent of original size [2021-11-07 08:23:38,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 61 [2021-11-07 08:23:38,938 INFO L354 Elim1Store]: treesize reduction 322, result has 13.9 percent of original size [2021-11-07 08:23:38,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 79 [2021-11-07 08:23:39,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:23:39,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:23:39,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-11-07 08:23:39,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804131477] [2021-11-07 08:23:39,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 08:23:39,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:23:39,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 08:23:39,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1780, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 08:23:39,095 INFO L87 Difference]: Start difference. First operand 771 states and 818 transitions. Second operand has 33 states, 33 states have (on average 4.575757575757576) internal successors, (151), 33 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:23:44,186 INFO L93 Difference]: Finished difference Result 1038 states and 1091 transitions. [2021-11-07 08:23:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-07 08:23:44,187 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.575757575757576) internal successors, (151), 33 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-07 08:23:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:23:44,188 INFO L225 Difference]: With dead ends: 1038 [2021-11-07 08:23:44,188 INFO L226 Difference]: Without dead ends: 1022 [2021-11-07 08:23:44,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=834, Invalid=11822, Unknown=0, NotChecked=0, Total=12656 [2021-11-07 08:23:44,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-11-07 08:23:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 783. [2021-11-07 08:23:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.0639386189258313) internal successors, (832), 782 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 832 transitions. [2021-11-07 08:23:44,393 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 832 transitions. Word has length 151 [2021-11-07 08:23:44,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:23:44,393 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 832 transitions. [2021-11-07 08:23:44,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.575757575757576) internal successors, (151), 33 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 832 transitions. [2021-11-07 08:23:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 08:23:44,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:23:44,394 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:23:44,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-07 08:23:44,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:23:44,595 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:23:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:23:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1760422770, now seen corresponding path program 10 times [2021-11-07 08:23:44,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:23:44,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953478099] [2021-11-07 08:23:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:23:44,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:23:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:23:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 1055 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:23:45,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:23:45,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953478099] [2021-11-07 08:23:45,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953478099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:23:45,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094061710] [2021-11-07 08:23:45,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:23:45,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:23:45,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:23:45,310 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:23:45,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-07 08:23:48,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:23:48,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:23:48,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-07 08:23:48,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:23:49,068 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 16 treesize of output 12 [2021-11-07 08:23:49,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-07 08:23:49,094 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:23:49,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 63 [2021-11-07 08:23:49,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:23:49,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:23:49,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-11-07 08:23:49,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026119253] [2021-11-07 08:23:49,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 08:23:49,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:23:49,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 08:23:49,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=866, Unknown=0, NotChecked=0, Total=930 [2021-11-07 08:23:49,182 INFO L87 Difference]: Start difference. First operand 783 states and 832 transitions. Second operand has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:23:57,418 INFO L93 Difference]: Finished difference Result 1076 states and 1147 transitions. [2021-11-07 08:23:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-11-07 08:23:57,419 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-07 08:23:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:23:57,420 INFO L225 Difference]: With dead ends: 1076 [2021-11-07 08:23:57,420 INFO L226 Difference]: Without dead ends: 1074 [2021-11-07 08:23:57,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10368 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1924, Invalid=28178, Unknown=0, NotChecked=0, Total=30102 [2021-11-07 08:23:57,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-07 08:23:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 801. [2021-11-07 08:23:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 1.06375) internal successors, (851), 800 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 851 transitions. [2021-11-07 08:23:57,645 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 851 transitions. Word has length 151 [2021-11-07 08:23:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:23:57,645 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 851 transitions. [2021-11-07 08:23:57,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.033333333333333) internal successors, (151), 30 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:23:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 851 transitions. [2021-11-07 08:23:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 08:23:57,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:23:57,646 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:23:57,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-07 08:23:57,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-07 08:23:57,847 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:23:57,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:23:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1096750123, now seen corresponding path program 23 times [2021-11-07 08:23:57,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:23:57,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542966743] [2021-11-07 08:23:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:23:57,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:23:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:23:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 0 proven. 1167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:23:58,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:23:58,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542966743] [2021-11-07 08:23:58,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542966743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:23:58,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760051309] [2021-11-07 08:23:58,640 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:23:58,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:23:58,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:23:58,641 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:23:58,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-07 08:24:03,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2021-11-07 08:24:03,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:24:03,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 08:24:03,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:03,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:24:03,767 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:24:03,767 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 26 treesize of output 25 [2021-11-07 08:24:03,835 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:24:03,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:24:03,922 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:24:03,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:24:04,081 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:24:04,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:24:04,341 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:24:04,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 90 [2021-11-07 08:24:04,518 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:24:04,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 102 [2021-11-07 08:24:04,724 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:24:04,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 97 treesize of output 114 [2021-11-07 08:24:04,955 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:24:04,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 109 treesize of output 129 [2021-11-07 08:24:11,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:24:11,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:24:11,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-11-07 08:24:11,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386337573] [2021-11-07 08:24:11,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 08:24:11,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 08:24:11,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=2042, Unknown=3, NotChecked=0, Total=2162 [2021-11-07 08:24:11,273 INFO L87 Difference]: Start difference. First operand 801 states and 851 transitions. Second operand has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:19,435 INFO L93 Difference]: Finished difference Result 1103 states and 1175 transitions. [2021-11-07 08:24:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-11-07 08:24:19,435 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-07 08:24:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:19,437 INFO L225 Difference]: With dead ends: 1103 [2021-11-07 08:24:19,437 INFO L226 Difference]: Without dead ends: 1101 [2021-11-07 08:24:19,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12704 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1957, Invalid=35096, Unknown=3, NotChecked=0, Total=37056 [2021-11-07 08:24:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-11-07 08:24:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 825. [2021-11-07 08:24:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.0631067961165048) internal successors, (876), 824 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 876 transitions. [2021-11-07 08:24:19,631 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 876 transitions. Word has length 157 [2021-11-07 08:24:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:19,631 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 876 transitions. [2021-11-07 08:24:19,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.064516129032258) internal successors, (157), 31 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 876 transitions. [2021-11-07 08:24:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 08:24:19,633 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:19,633 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:19,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:19,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:19,834 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:24:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1991130207, now seen corresponding path program 7 times [2021-11-07 08:24:19,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:19,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920717388] [2021-11-07 08:24:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:19,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 38 proven. 1129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:20,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:20,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920717388] [2021-11-07 08:24:20,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920717388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:20,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056152978] [2021-11-07 08:24:20,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:24:20,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:20,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:20,515 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:20,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-07 08:24:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:24,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-07 08:24:24,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:24,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 08:24:26,041 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 19 [2021-11-07 08:24:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 38 proven. 1129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:26,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056152978] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:26,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:24:26,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30] total 59 [2021-11-07 08:24:26,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408376154] [2021-11-07 08:24:26,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-07 08:24:26,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-07 08:24:26,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=3263, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 08:24:26,056 INFO L87 Difference]: Start difference. First operand 825 states and 876 transitions. Second operand has 59 states, 59 states have (on average 5.220338983050848) internal successors, (308), 59 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:38,029 INFO L93 Difference]: Finished difference Result 1271 states and 1336 transitions. [2021-11-07 08:24:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-11-07 08:24:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.220338983050848) internal successors, (308), 59 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 157 [2021-11-07 08:24:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:38,031 INFO L225 Difference]: With dead ends: 1271 [2021-11-07 08:24:38,031 INFO L226 Difference]: Without dead ends: 1261 [2021-11-07 08:24:38,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10632 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1982, Invalid=36630, Unknown=0, NotChecked=0, Total=38612 [2021-11-07 08:24:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-11-07 08:24:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 831. [2021-11-07 08:24:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 1.0626506024096385) internal successors, (882), 830 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 882 transitions. [2021-11-07 08:24:38,233 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 882 transitions. Word has length 157 [2021-11-07 08:24:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:38,234 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 882 transitions. [2021-11-07 08:24:38,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.220338983050848) internal successors, (308), 59 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 882 transitions. [2021-11-07 08:24:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 08:24:38,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:38,236 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:38,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:38,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:38,461 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:24:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:38,461 INFO L85 PathProgramCache]: Analyzing trace with hash 310373054, now seen corresponding path program 24 times [2021-11-07 08:24:38,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:38,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053416597] [2021-11-07 08:24:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:38,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 1105 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:39,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:39,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053416597] [2021-11-07 08:24:39,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053416597] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:39,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492939269] [2021-11-07 08:24:39,536 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:24:39,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:39,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:39,537 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:39,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-07 08:24:45,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-11-07 08:24:45,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:24:45,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 08:24:45,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:45,831 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:24:45,911 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:24:45,911 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 26 treesize of output 25 [2021-11-07 08:24:45,965 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:24:45,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:24:46,037 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:24:46,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:24:46,128 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:24:46,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:24:46,364 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:24:46,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 93 [2021-11-07 08:24:46,545 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:24:46,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 108 [2021-11-07 08:24:46,728 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:24:46,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 123 [2021-11-07 08:24:46,964 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:24:46,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 118 treesize of output 138 [2021-11-07 08:24:47,502 INFO L354 Elim1Store]: treesize reduction 984, result has 9.7 percent of original size [2021-11-07 08:24:47,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 141 treesize of output 155 [2021-11-07 08:24:47,863 INFO L354 Elim1Store]: treesize reduction 1184, result has 9.1 percent of original size [2021-11-07 08:24:47,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 159 treesize of output 167 [2021-11-07 08:24:48,306 INFO L354 Elim1Store]: treesize reduction 1402, result has 8.5 percent of original size [2021-11-07 08:24:48,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 177 treesize of output 179 [2021-11-07 08:24:48,828 INFO L354 Elim1Store]: treesize reduction 1638, result has 8.0 percent of original size [2021-11-07 08:24:48,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 189 treesize of output 194 [2021-11-07 08:24:49,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:24:49,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:24:49,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-11-07 08:24:49,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42414344] [2021-11-07 08:24:49,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 08:24:49,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 08:24:49,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2154, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 08:24:49,307 INFO L87 Difference]: Start difference. First operand 831 states and 882 transitions. Second operand has 32 states, 32 states have (on average 5.09375) internal successors, (163), 32 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) [2021-11-07 08:24:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:50,571 INFO L93 Difference]: Finished difference Result 1439 states and 1531 transitions. [2021-11-07 08:24:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 08:24:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.09375) internal successors, (163), 32 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 163 [2021-11-07 08:24:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:50,572 INFO L225 Difference]: With dead ends: 1439 [2021-11-07 08:24:50,572 INFO L226 Difference]: Without dead ends: 875 [2021-11-07 08:24:50,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=946, Invalid=5216, Unknown=0, NotChecked=0, Total=6162 [2021-11-07 08:24:50,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-07 08:24:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 855. [2021-11-07 08:24:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.059718969555035) internal successors, (905), 854 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:24:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 905 transitions. [2021-11-07 08:24:50,770 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 905 transitions. Word has length 163 [2021-11-07 08:24:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:50,770 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 905 transitions. [2021-11-07 08:24:50,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.09375) internal successors, (163), 32 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) [2021-11-07 08:24:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 905 transitions. [2021-11-07 08:24:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 08:24:50,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:50,772 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:50,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-07 08:24:50,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-11-07 08:24:50,984 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:24:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1117075564, now seen corresponding path program 8 times [2021-11-07 08:24:50,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:50,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827656102] [2021-11-07 08:24:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:50,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 40 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:52,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:52,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827656102] [2021-11-07 08:24:52,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827656102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:24:52,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179675415] [2021-11-07 08:24:52,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:24:52,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:24:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:24:52,173 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:24:52,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-07 08:24:55,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:24:55,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:24:55,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-07 08:24:56,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:24:56,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:24:56,641 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:24:56,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-07 08:24:56,729 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:24:56,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:24:56,934 INFO L354 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2021-11-07 08:24:56,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 49 [2021-11-07 08:24:57,079 INFO L354 Elim1Store]: treesize reduction 218, result has 15.5 percent of original size [2021-11-07 08:24:57,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 64 [2021-11-07 08:24:57,226 INFO L354 Elim1Store]: treesize reduction 322, result has 13.9 percent of original size [2021-11-07 08:24:57,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 79 [2021-11-07 08:24:57,397 INFO L354 Elim1Store]: treesize reduction 444, result has 12.6 percent of original size [2021-11-07 08:24:57,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 80 treesize of output 94 [2021-11-07 08:24:57,779 INFO L354 Elim1Store]: treesize reduction 584, result has 11.5 percent of original size [2021-11-07 08:24:57,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 117 [2021-11-07 08:24:58,083 INFO L354 Elim1Store]: treesize reduction 742, result has 10.6 percent of original size [2021-11-07 08:24:58,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 112 treesize of output 132 [2021-11-07 08:24:58,437 INFO L354 Elim1Store]: treesize reduction 918, result has 9.8 percent of original size [2021-11-07 08:24:58,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 124 treesize of output 147 [2021-11-07 08:24:58,859 INFO L354 Elim1Store]: treesize reduction 1112, result has 9.2 percent of original size [2021-11-07 08:24:58,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 136 treesize of output 162 [2021-11-07 08:24:59,694 INFO L354 Elim1Store]: treesize reduction 1324, result has 8.6 percent of original size [2021-11-07 08:24:59,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 159 treesize of output 179 [2021-11-07 08:25:00,249 INFO L354 Elim1Store]: treesize reduction 1554, result has 8.0 percent of original size [2021-11-07 08:25:00,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 198 treesize of output 194 [2021-11-07 08:25:00,975 INFO L354 Elim1Store]: treesize reduction 1802, result has 7.6 percent of original size [2021-11-07 08:25:00,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 216 treesize of output 206 [2021-11-07 08:25:01,837 INFO L354 Elim1Store]: treesize reduction 2068, result has 7.2 percent of original size [2021-11-07 08:25:01,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 267 treesize of output 224 [2021-11-07 08:25:02,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:25:02,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:25:02,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-07 08:25:02,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293107291] [2021-11-07 08:25:02,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 08:25:02,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 08:25:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3312, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 08:25:02,446 INFO L87 Difference]: Start difference. First operand 855 states and 905 transitions. Second operand has 35 states, 35 states have (on average 4.6571428571428575) internal successors, (163), 35 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) [2021-11-07 08:25:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:07,532 INFO L93 Difference]: Finished difference Result 1063 states and 1124 transitions. [2021-11-07 08:25:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 08:25:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.6571428571428575) internal successors, (163), 35 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 163 [2021-11-07 08:25:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:07,534 INFO L225 Difference]: With dead ends: 1063 [2021-11-07 08:25:07,535 INFO L226 Difference]: Without dead ends: 1041 [2021-11-07 08:25:07,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 32 SyntacticMatches, 11 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3058 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=931, Invalid=12409, Unknown=0, NotChecked=0, Total=13340 [2021-11-07 08:25:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-07 08:25:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 736. [2021-11-07 08:25:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.0639455782312925) internal successors, (782), 735 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 782 transitions. [2021-11-07 08:25:07,688 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 782 transitions. Word has length 163 [2021-11-07 08:25:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:07,688 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 782 transitions. [2021-11-07 08:25:07,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.6571428571428575) internal successors, (163), 35 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) [2021-11-07 08:25:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 782 transitions. [2021-11-07 08:25:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 08:25:07,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:07,690 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:07,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:07,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:07,890 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:25:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1034218419, now seen corresponding path program 25 times [2021-11-07 08:25:07,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:07,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347730100] [2021-11-07 08:25:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:07,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 40 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:08,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:08,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347730100] [2021-11-07 08:25:08,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347730100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:08,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155713122] [2021-11-07 08:25:08,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 08:25:08,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:08,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:08,848 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:08,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-07 08:25:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:12,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-07 08:25:12,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:13,250 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 20 treesize of output 16 [2021-11-07 08:25:13,305 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:25:13,306 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 29 treesize of output 28 [2021-11-07 08:25:13,325 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:25:13,325 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 29 treesize of output 28 [2021-11-07 08:25:13,339 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-07 08:25:13,340 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 23 treesize of output 22 [2021-11-07 08:25:15,698 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:25:15,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-11-07 08:25:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 40 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:15,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155713122] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:15,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:15,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 64 [2021-11-07 08:25:15,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825915890] [2021-11-07 08:25:15,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 08:25:15,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:15,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 08:25:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=3870, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 08:25:15,711 INFO L87 Difference]: Start difference. First operand 736 states and 782 transitions. Second operand has 64 states, 64 states have (on average 5.1875) internal successors, (332), 64 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:35,707 INFO L93 Difference]: Finished difference Result 1668 states and 1767 transitions. [2021-11-07 08:25:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2021-11-07 08:25:35,707 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.1875) internal successors, (332), 64 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-07 08:25:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:35,710 INFO L225 Difference]: With dead ends: 1668 [2021-11-07 08:25:35,710 INFO L226 Difference]: Without dead ends: 1658 [2021-11-07 08:25:35,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29607 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=3611, Invalid=84895, Unknown=0, NotChecked=0, Total=88506 [2021-11-07 08:25:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2021-11-07 08:25:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 767. [2021-11-07 08:25:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 1.0652741514360313) internal successors, (816), 766 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 816 transitions. [2021-11-07 08:25:35,917 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 816 transitions. Word has length 169 [2021-11-07 08:25:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:35,918 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 816 transitions. [2021-11-07 08:25:35,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.1875) internal successors, (332), 64 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 816 transitions. [2021-11-07 08:25:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 08:25:35,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:35,919 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 17, 6, 6, 6, 6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:35,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:36,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:36,120 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:25:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash -188596011, now seen corresponding path program 10 times [2021-11-07 08:25:36,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:36,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268914006] [2021-11-07 08:25:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:36,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 604 proven. 218 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2021-11-07 08:25:36,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:36,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268914006] [2021-11-07 08:25:36,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268914006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:36,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76059332] [2021-11-07 08:25:36,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:25:36,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:36,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:36,904 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:36,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-07 08:25:40,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:25:40,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:25:40,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 08:25:40,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:41,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:25:41,172 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:25:41,172 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 29 treesize of output 28 [2021-11-07 08:25:41,187 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:25:41,187 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 29 treesize of output 28 [2021-11-07 08:25:41,236 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-07 08:25:41,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 08:25:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 0 proven. 1316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:43,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76059332] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:43,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:43,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 34] total 54 [2021-11-07 08:25:43,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193026302] [2021-11-07 08:25:43,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-07 08:25:43,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-07 08:25:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2697, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 08:25:43,609 INFO L87 Difference]: Start difference. First operand 767 states and 816 transitions. Second operand has 54 states, 54 states have (on average 4.87037037037037) internal successors, (263), 54 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:59,286 INFO L93 Difference]: Finished difference Result 1499 states and 1632 transitions. [2021-11-07 08:25:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-11-07 08:25:59,286 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.87037037037037) internal successors, (263), 54 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-07 08:25:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:25:59,287 INFO L225 Difference]: With dead ends: 1499 [2021-11-07 08:25:59,288 INFO L226 Difference]: Without dead ends: 1357 [2021-11-07 08:25:59,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 138 SyntacticMatches, 14 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12086 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2479, Invalid=34963, Unknown=0, NotChecked=0, Total=37442 [2021-11-07 08:25:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-11-07 08:25:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 793. [2021-11-07 08:25:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 1.0631313131313131) internal successors, (842), 792 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 842 transitions. [2021-11-07 08:25:59,459 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 842 transitions. Word has length 169 [2021-11-07 08:25:59,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:25:59,459 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 842 transitions. [2021-11-07 08:25:59,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.87037037037037) internal successors, (263), 54 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 842 transitions. [2021-11-07 08:25:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 08:25:59,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:25:59,461 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:59,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:59,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-11-07 08:25:59,683 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:25:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2098723910, now seen corresponding path program 26 times [2021-11-07 08:25:59,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:59,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496582218] [2021-11-07 08:25:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:59,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 42 proven. 1398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:00,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:00,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496582218] [2021-11-07 08:26:00,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496582218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:00,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128232] [2021-11-07 08:26:00,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:26:00,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:00,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:00,520 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:00,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-07 08:26:04,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:26:04,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:26:04,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 08:26:04,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:05,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:26:05,126 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-07 08:26:05,126 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 26 treesize of output 25 [2021-11-07 08:26:05,200 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-07 08:26:05,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-07 08:26:05,294 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-07 08:26:05,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-11-07 08:26:05,404 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-07 08:26:05,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-07 08:26:05,707 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-07 08:26:05,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 93 [2021-11-07 08:26:05,897 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-07 08:26:05,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 108 [2021-11-07 08:26:06,121 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-07 08:26:06,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 123 [2021-11-07 08:26:06,387 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-07 08:26:06,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 118 treesize of output 138 [2021-11-07 08:26:06,984 INFO L354 Elim1Store]: treesize reduction 984, result has 9.7 percent of original size [2021-11-07 08:26:06,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 135 treesize of output 158 [2021-11-07 08:26:07,492 INFO L354 Elim1Store]: treesize reduction 1184, result has 9.1 percent of original size [2021-11-07 08:26:07,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 147 treesize of output 173 [2021-11-07 08:26:08,094 INFO L354 Elim1Store]: treesize reduction 1402, result has 8.5 percent of original size [2021-11-07 08:26:08,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 159 treesize of output 188 [2021-11-07 08:26:08,685 INFO L354 Elim1Store]: treesize reduction 1638, result has 8.0 percent of original size [2021-11-07 08:26:08,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 171 treesize of output 203 [2021-11-07 08:26:09,832 INFO L354 Elim1Store]: treesize reduction 1892, result has 7.5 percent of original size [2021-11-07 08:26:09,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 203 treesize of output 220 [2021-11-07 08:26:10,727 INFO L354 Elim1Store]: treesize reduction 2164, result has 7.1 percent of original size [2021-11-07 08:26:10,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 230 treesize of output 232 [2021-11-07 08:26:11,728 INFO L354 Elim1Store]: treesize reduction 2454, result has 6.8 percent of original size [2021-11-07 08:26:11,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 257 treesize of output 244 [2021-11-07 08:26:12,842 INFO L354 Elim1Store]: treesize reduction 2762, result has 6.4 percent of original size [2021-11-07 08:26:12,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 136 case distinctions, treesize of input 269 treesize of output 259 [2021-11-07 08:26:25,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:26:25,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:26:25,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-07 08:26:25,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22381805] [2021-11-07 08:26:25,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 08:26:25,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 08:26:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=3332, Unknown=4, NotChecked=0, Total=3540 [2021-11-07 08:26:25,418 INFO L87 Difference]: Start difference. First operand 793 states and 842 transitions. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 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) [2021-11-07 08:26:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:26:29,751 INFO L93 Difference]: Finished difference Result 1196 states and 1254 transitions. [2021-11-07 08:26:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 08:26:29,752 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 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) Word has length 175 [2021-11-07 08:26:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:26:29,753 INFO L225 Difference]: With dead ends: 1196 [2021-11-07 08:26:29,753 INFO L226 Difference]: Without dead ends: 1186 [2021-11-07 08:26:29,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3360 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=684, Invalid=13832, Unknown=4, NotChecked=0, Total=14520 [2021-11-07 08:26:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-11-07 08:26:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 922. [2021-11-07 08:26:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 1.0608034744842563) internal successors, (977), 921 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:26:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 977 transitions. [2021-11-07 08:26:29,966 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 977 transitions. Word has length 175 [2021-11-07 08:26:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:26:29,966 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 977 transitions. [2021-11-07 08:26:29,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 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) [2021-11-07 08:26:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 977 transitions. [2021-11-07 08:26:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 08:26:29,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:26:29,968 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:26:30,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-07 08:26:30,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:30,168 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:26:30,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:26:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1934518362, now seen corresponding path program 9 times [2021-11-07 08:26:30,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:26:30,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937671246] [2021-11-07 08:26:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:26:30,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:26:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:26:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 40 proven. 1313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:26:31,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:26:31,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937671246] [2021-11-07 08:26:31,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937671246] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:26:31,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758056369] [2021-11-07 08:26:31,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:26:31,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:26:31,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:26:31,216 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:26:31,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050fb775-3787-451f-bd06-1284d6171566/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-07 08:26:40,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-11-07 08:26:40,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:26:40,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-07 08:26:40,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:26:41,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 08:26:41,108 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-07 08:26:41,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-07 08:26:41,199 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-07 08:26:41,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-07 08:26:41,300 INFO L354 Elim1Store]: treesize reduction 177, result has 17.3 percent of original size [2021-11-07 08:26:41,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 58 [2021-11-07 08:26:41,553 INFO L354 Elim1Store]: treesize reduction 200, result has 15.6 percent of original size [2021-11-07 08:26:41,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 61 [2021-11-07 08:26:41,688 INFO L354 Elim1Store]: treesize reduction 301, result has 14.0 percent of original size [2021-11-07 08:26:41,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 73 [2021-11-07 08:26:41,850 INFO L354 Elim1Store]: treesize reduction 420, result has 12.7 percent of original size [2021-11-07 08:26:41,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 80 treesize of output 85 [2021-11-07 08:26:42,030 INFO L354 Elim1Store]: treesize reduction 557, result has 11.6 percent of original size [2021-11-07 08:26:42,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 95 treesize of output 103 [2021-11-07 08:26:42,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~i~0] [2021-11-07 08:26:42,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:26:42,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-11-07 08:26:42,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464454844] [2021-11-07 08:26:42,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 08:26:42,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:26:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 08:26:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2323, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 08:26:42,184 INFO L87 Difference]: Start difference. First operand 922 states and 977 transitions. Second operand has 36 states, 36 states have (on average 4.861111111111111) internal successors, (175), 36 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)