./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/pr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/pr5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y --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 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:22:09,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:22:09,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:22:10,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:22:10,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:22:10,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:22:10,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:22:10,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:22:10,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:22:10,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:22:10,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:22:10,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:22:10,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:22:10,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:22:10,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:22:10,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:22:10,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:22:10,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:22:10,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:22:10,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:22:10,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:22:10,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:22:10,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:22:10,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:22:10,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:22:10,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:22:10,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:22:10,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:22:10,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:22:10,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:22:10,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:22:10,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:22:10,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:22:10,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:22:10,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:22:10,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:22:10,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:22:10,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:22:10,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:22:10,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:22:10,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:22:10,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:22:10,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:22:10,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:22:10,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:22:10,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:22:10,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:22:10,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:22:10,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:22:10,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:22:10,153 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:22:10,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:22:10,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:22:10,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:22:10,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:22:10,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:22:10,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:22:10,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:22:10,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:22:10,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:22:10,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:22:10,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:22:10,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:22:10,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:22:10,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:22:10,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:22:10,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:22:10,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:22:10,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:22:10,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:22:10,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:22:10,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:22:10,159 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:22:10,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:22:10,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:22:10,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:22:10,160 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_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a [2021-11-13 18:22:10,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:22:10,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:22:10,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:22:10,523 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:22:10,525 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:22:10,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-tiling/pr5.c [2021-11-13 18:22:10,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/data/219b54caf/fa2ebc0e47994090a9c688532a124fde/FLAG95d8e52c1 [2021-11-13 18:22:11,219 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:22:11,220 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/sv-benchmarks/c/array-tiling/pr5.c [2021-11-13 18:22:11,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/data/219b54caf/fa2ebc0e47994090a9c688532a124fde/FLAG95d8e52c1 [2021-11-13 18:22:11,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/data/219b54caf/fa2ebc0e47994090a9c688532a124fde [2021-11-13 18:22:11,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:22:11,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:22:11,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:22:11,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:22:11,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:22:11,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:11,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1485e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11, skipping insertion in model container [2021-11-13 18:22:11,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:11,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:22:11,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:22:11,864 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_bb2a5f64-012f-4404-a5ae-96e0809bc207/sv-benchmarks/c/array-tiling/pr5.c[394,407] [2021-11-13 18:22:11,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:22:11,917 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:22:11,946 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_bb2a5f64-012f-4404-a5ae-96e0809bc207/sv-benchmarks/c/array-tiling/pr5.c[394,407] [2021-11-13 18:22:11,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:22:11,990 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:22:11,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11 WrapperNode [2021-11-13 18:22:11,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:22:11,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:22:11,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:22:11,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:22:12,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:22:12,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:22:12,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:22:12,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:22:12,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:22:12,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:22:12,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:22:12,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:22:12,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (1/1) ... [2021-11-13 18:22:12,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:22:12,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:12,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:22:12,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:22:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:22:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:22:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:22:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:22:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:22:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:22:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:22:12,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:22:12,543 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:22:12,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:12 BoogieIcfgContainer [2021-11-13 18:22:12,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:22:12,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:22:12,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:22:12,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:22:12,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:22:11" (1/3) ... [2021-11-13 18:22:12,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b1620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:12, skipping insertion in model container [2021-11-13 18:22:12,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:11" (2/3) ... [2021-11-13 18:22:12,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b1620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:12, skipping insertion in model container [2021-11-13 18:22:12,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:12" (3/3) ... [2021-11-13 18:22:12,581 INFO L111 eAbstractionObserver]: Analyzing ICFG pr5.c [2021-11-13 18:22:12,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:22:12,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:22:12,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:22:12,661 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 [2021-11-13 18:22:12,661 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:22:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:22:12,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:12,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:12,689 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash -50963655, now seen corresponding path program 1 times [2021-11-13 18:22:12,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:12,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437678105] [2021-11-13 18:22:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:12,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:12,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:12,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437678105] [2021-11-13 18:22:12,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437678105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:12,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:12,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:22:12,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200442852] [2021-11-13 18:22:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:12,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:22:12,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:22:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:22:12,979 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 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) [2021-11-13 18:22:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:12,999 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2021-11-13 18:22:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:22:13,001 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 [2021-11-13 18:22:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:13,010 INFO L225 Difference]: With dead ends: 49 [2021-11-13 18:22:13,010 INFO L226 Difference]: Without dead ends: 22 [2021-11-13 18:22:13,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:22:13,018 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:13,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:22:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-13 18:22:13,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-13 18:22:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2021-11-13 18:22:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-11-13 18:22:13,064 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2021-11-13 18:22:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:13,065 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-11-13 18:22:13,068 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) [2021-11-13 18:22:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-11-13 18:22:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:22:13,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:13,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:13,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:22:13,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash 629094715, now seen corresponding path program 1 times [2021-11-13 18:22:13,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:13,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124503814] [2021-11-13 18:22:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:13,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:13,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:13,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124503814] [2021-11-13 18:22:13,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124503814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:13,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:13,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:22:13,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805858272] [2021-11-13 18:22:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:13,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:22:13,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:13,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:22:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:22:13,299 INFO L87 Difference]: Start difference. First operand 22 states and 29 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) [2021-11-13 18:22:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:13,342 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-11-13 18:22:13,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:22:13,342 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 [2021-11-13 18:22:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:13,344 INFO L225 Difference]: With dead ends: 31 [2021-11-13 18:22:13,344 INFO L226 Difference]: Without dead ends: 29 [2021-11-13 18:22:13,344 INFO L932 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 [2021-11-13 18:22:13,346 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:13,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 77 Invalid, 15 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 23.25ms Time] [2021-11-13 18:22:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-13 18:22:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-13 18:22:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 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) [2021-11-13 18:22:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-11-13 18:22:13,354 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2021-11-13 18:22:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:13,355 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-11-13 18:22:13,355 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) [2021-11-13 18:22:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-11-13 18:22:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:22:13,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:13,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:13,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:22:13,357 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 629154297, now seen corresponding path program 1 times [2021-11-13 18:22:13,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:13,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813703871] [2021-11-13 18:22:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:13,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:13,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:13,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813703871] [2021-11-13 18:22:13,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813703871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:13,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:13,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:22:13,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530013360] [2021-11-13 18:22:13,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:13,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:22:13,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:22:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:22:13,621 INFO L87 Difference]: Start difference. First operand 24 states and 31 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) [2021-11-13 18:22:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:13,756 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-13 18:22:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:22:13,757 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 [2021-11-13 18:22:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:13,758 INFO L225 Difference]: With dead ends: 42 [2021-11-13 18:22:13,758 INFO L226 Difference]: Without dead ends: 31 [2021-11-13 18:22:13,759 INFO L932 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 [2021-11-13 18:22:13,761 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:13,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 122.17ms Time] [2021-11-13 18:22:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-13 18:22:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2021-11-13 18:22:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-11-13 18:22:13,769 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2021-11-13 18:22:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:13,770 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-11-13 18:22:13,770 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) [2021-11-13 18:22:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-11-13 18:22:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:22:13,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:13,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:13,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:22:13,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash 314139906, now seen corresponding path program 1 times [2021-11-13 18:22:13,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:13,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495725537] [2021-11-13 18:22:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:13,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:13,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:13,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495725537] [2021-11-13 18:22:13,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495725537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:13,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:13,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:22:13,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696642697] [2021-11-13 18:22:13,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:13,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:22:13,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:13,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:22:13,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:22:13,901 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:13,989 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-13 18:22:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:22:13,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 18:22:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:13,993 INFO L225 Difference]: With dead ends: 61 [2021-11-13 18:22:13,995 INFO L226 Difference]: Without dead ends: 43 [2021-11-13 18:22:13,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:22:14,001 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:14,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 42 Invalid, 26 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 50.67ms Time] [2021-11-13 18:22:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-13 18:22:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2021-11-13 18:22:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 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) [2021-11-13 18:22:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2021-11-13 18:22:14,030 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 20 [2021-11-13 18:22:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:14,033 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2021-11-13 18:22:14,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:14,033 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2021-11-13 18:22:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:22:14,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:14,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:14,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:22:14,036 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:14,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash 994198276, now seen corresponding path program 1 times [2021-11-13 18:22:14,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:14,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598603899] [2021-11-13 18:22:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:14,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:14,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:14,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598603899] [2021-11-13 18:22:14,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598603899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:14,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:14,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:22:14,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629934466] [2021-11-13 18:22:14,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:14,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:22:14,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:22:14,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:22:14,186 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:14,253 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2021-11-13 18:22:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:22:14,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 18:22:14,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:14,255 INFO L225 Difference]: With dead ends: 75 [2021-11-13 18:22:14,256 INFO L226 Difference]: Without dead ends: 57 [2021-11-13 18:22:14,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:22:14,258 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.60ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:14,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 36 Invalid, 26 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 49.60ms Time] [2021-11-13 18:22:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-13 18:22:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-11-13 18:22:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.488888888888889) internal successors, (67), 45 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2021-11-13 18:22:14,278 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 67 transitions. Word has length 20 [2021-11-13 18:22:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:14,279 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 67 transitions. [2021-11-13 18:22:14,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 67 transitions. [2021-11-13 18:22:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:22:14,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:14,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:14,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:22:14,285 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 707166916, now seen corresponding path program 1 times [2021-11-13 18:22:14,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:14,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468866583] [2021-11-13 18:22:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:14,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:14,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:14,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468866583] [2021-11-13 18:22:14,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468866583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:14,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44604597] [2021-11-13 18:22:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:14,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:14,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:14,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:14,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:22:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:14,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:22:14,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:15,110 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 [2021-11-13 18:22:15,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:15,176 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 [2021-11-13 18:22:15,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:15,222 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 [2021-11-13 18:22:15,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:15,259 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 [2021-11-13 18:22:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:15,281 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 [2021-11-13 18:22:15,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-13 18:22:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:15,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:15,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-13 18:22:15,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-11-13 18:22:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:15,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44604597] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:15,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:15,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 18 [2021-11-13 18:22:15,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37077390] [2021-11-13 18:22:15,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:15,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:22:15,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:15,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:22:15,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:22:15,731 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2021-11-13 18:22:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:16,651 INFO L93 Difference]: Finished difference Result 162 states and 218 transitions. [2021-11-13 18:22:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 18:22:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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 20 [2021-11-13 18:22:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:16,654 INFO L225 Difference]: With dead ends: 162 [2021-11-13 18:22:16,654 INFO L226 Difference]: Without dead ends: 144 [2021-11-13 18:22:16,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 18:22:16,657 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 213 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.25ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 408.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:16,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 125 Invalid, 398 Unknown, 0 Unchecked, 7.25ms Time], IncrementalHoareTripleChecker [104 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 408.15ms Time] [2021-11-13 18:22:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-13 18:22:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 68. [2021-11-13 18:22:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.507462686567164) internal successors, (101), 67 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2021-11-13 18:22:16,672 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 20 [2021-11-13 18:22:16,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:16,672 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2021-11-13 18:22:16,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2021-11-13 18:22:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2021-11-13 18:22:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:22:16,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:16,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:16,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:16,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:16,899 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash 407392262, now seen corresponding path program 1 times [2021-11-13 18:22:16,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:16,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916716123] [2021-11-13 18:22:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:16,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:17,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:17,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916716123] [2021-11-13 18:22:17,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916716123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:17,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006410866] [2021-11-13 18:22:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:17,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:17,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:17,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:17,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:22:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:17,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 18:22:17,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:17,301 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 [2021-11-13 18:22:17,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-13 18:22:17,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,342 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 [2021-11-13 18:22:17,363 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 [2021-11-13 18:22:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,374 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 [2021-11-13 18:22:17,403 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 [2021-11-13 18:22:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,410 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 [2021-11-13 18:22:17,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:22:17,470 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:22:17,471 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 [2021-11-13 18:22:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:17,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:17,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-13 18:22:17,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-11-13 18:22:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:17,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006410866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:17,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:17,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 16 [2021-11-13 18:22:17,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033744151] [2021-11-13 18:22:17,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:17,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:22:17,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:17,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:22:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:22:17,863 INFO L87 Difference]: Start difference. First operand 68 states and 101 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) [2021-11-13 18:22:18,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:18,867 INFO L93 Difference]: Finished difference Result 169 states and 226 transitions. [2021-11-13 18:22:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-13 18:22:18,868 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 20 [2021-11-13 18:22:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:18,870 INFO L225 Difference]: With dead ends: 169 [2021-11-13 18:22:18,870 INFO L226 Difference]: Without dead ends: 167 [2021-11-13 18:22:18,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=429, Invalid=1463, Unknown=0, NotChecked=0, Total=1892 [2021-11-13 18:22:18,877 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 214 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 349.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 419.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:18,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 137 Invalid, 524 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [86 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 419.08ms Time] [2021-11-13 18:22:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-13 18:22:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 71. [2021-11-13 18:22:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5) internal successors, (105), 70 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) [2021-11-13 18:22:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2021-11-13 18:22:18,898 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 20 [2021-11-13 18:22:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:18,898 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2021-11-13 18:22:18,902 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) [2021-11-13 18:22:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2021-11-13 18:22:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:22:18,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:18,911 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:18,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-13 18:22:19,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 18:22:19,126 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:19,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1616202537, now seen corresponding path program 1 times [2021-11-13 18:22:19,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:19,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358325510] [2021-11-13 18:22:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:19,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:19,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:19,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358325510] [2021-11-13 18:22:19,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358325510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:19,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668135330] [2021-11-13 18:22:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:19,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:19,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:19,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:19,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:22:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:19,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 18:22:19,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:19,610 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 [2021-11-13 18:22:19,668 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:19,668 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 [2021-11-13 18:22:19,699 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:19,700 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 [2021-11-13 18:22:19,725 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:22:19,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 18:22:19,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-11-13 18:22:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:19,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:20,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-13 18:22:20,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-13 18:22:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:20,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668135330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:20,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:20,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2021-11-13 18:22:20,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692109050] [2021-11-13 18:22:20,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:20,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 18:22:20,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:20,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 18:22:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:22:20,304 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:22,081 INFO L93 Difference]: Finished difference Result 427 states and 616 transitions. [2021-11-13 18:22:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-13 18:22:22,081 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-13 18:22:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:22,084 INFO L225 Difference]: With dead ends: 427 [2021-11-13 18:22:22,085 INFO L226 Difference]: Without dead ends: 365 [2021-11-13 18:22:22,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=585, Invalid=2277, Unknown=0, NotChecked=0, Total=2862 [2021-11-13 18:22:22,088 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 448 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 576.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.59ms SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 699.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:22,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 144 Invalid, 862 Unknown, 0 Unchecked, 8.59ms Time], IncrementalHoareTripleChecker [428 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 699.70ms Time] [2021-11-13 18:22:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-13 18:22:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 145. [2021-11-13 18:22:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5208333333333333) internal successors, (219), 144 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 219 transitions. [2021-11-13 18:22:22,110 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 219 transitions. Word has length 26 [2021-11-13 18:22:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:22,111 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 219 transitions. [2021-11-13 18:22:22,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 219 transitions. [2021-11-13 18:22:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:22:22,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:22,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:22,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:22,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:22:22,339 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash 989711575, now seen corresponding path program 1 times [2021-11-13 18:22:22,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:22,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046212515] [2021-11-13 18:22:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:22,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:22,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:22,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046212515] [2021-11-13 18:22:22,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046212515] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:22,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911185205] [2021-11-13 18:22:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:22,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:22,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:22,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:22,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:22:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:22:22,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:22,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-13 18:22:22,684 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:22,685 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 [2021-11-13 18:22:22,705 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:22,705 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 [2021-11-13 18:22:22,752 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-13 18:22:22,752 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 [2021-11-13 18:22:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:23,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:23,189 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 17 treesize of output 15 [2021-11-13 18:22:23,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 18:22:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:23,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911185205] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:23,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:23,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 20 [2021-11-13 18:22:23,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571350786] [2021-11-13 18:22:23,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:23,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 18:22:23,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:23,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 18:22:23,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:22:23,214 INFO L87 Difference]: Start difference. First operand 145 states and 219 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:25,295 INFO L93 Difference]: Finished difference Result 460 states and 656 transitions. [2021-11-13 18:22:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-13 18:22:25,297 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-13 18:22:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:25,301 INFO L225 Difference]: With dead ends: 460 [2021-11-13 18:22:25,301 INFO L226 Difference]: Without dead ends: 458 [2021-11-13 18:22:25,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=933, Invalid=4037, Unknown=0, NotChecked=0, Total=4970 [2021-11-13 18:22:25,305 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 225 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 752.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.78ms SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 914.60ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:25,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 213 Invalid, 1140 Unknown, 0 Unchecked, 7.78ms Time], IncrementalHoareTripleChecker [131 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 914.60ms Time] [2021-11-13 18:22:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-13 18:22:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 207. [2021-11-13 18:22:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.5194174757281553) internal successors, (313), 206 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 313 transitions. [2021-11-13 18:22:25,331 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 313 transitions. Word has length 26 [2021-11-13 18:22:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:25,331 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 313 transitions. [2021-11-13 18:22:25,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 313 transitions. [2021-11-13 18:22:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 18:22:25,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:25,333 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:25,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:25,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:25,559 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash 793542745, now seen corresponding path program 1 times [2021-11-13 18:22:25,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:25,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947829207] [2021-11-13 18:22:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:25,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:25,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:25,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947829207] [2021-11-13 18:22:25,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947829207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:25,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:25,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:22:25,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998639942] [2021-11-13 18:22:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:25,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:22:25,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:22:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:25,604 INFO L87 Difference]: Start difference. First operand 207 states and 313 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:25,644 INFO L93 Difference]: Finished difference Result 322 states and 472 transitions. [2021-11-13 18:22:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:22:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 18:22:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:25,648 INFO L225 Difference]: With dead ends: 322 [2021-11-13 18:22:25,648 INFO L226 Difference]: Without dead ends: 233 [2021-11-13 18:22:25,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:25,651 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:25,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 21 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 22.09ms Time] [2021-11-13 18:22:25,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-13 18:22:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 207. [2021-11-13 18:22:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4757281553398058) internal successors, (304), 206 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 304 transitions. [2021-11-13 18:22:25,676 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 304 transitions. Word has length 27 [2021-11-13 18:22:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:25,676 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 304 transitions. [2021-11-13 18:22:25,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 304 transitions. [2021-11-13 18:22:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 18:22:25,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:25,679 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:25,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:22:25,679 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -345589223, now seen corresponding path program 1 times [2021-11-13 18:22:25,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:25,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680637758] [2021-11-13 18:22:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:25,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:25,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:25,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680637758] [2021-11-13 18:22:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680637758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:25,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:25,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:22:25,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141294075] [2021-11-13 18:22:25,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:25,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:22:25,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:22:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:25,713 INFO L87 Difference]: Start difference. First operand 207 states and 304 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:25,747 INFO L93 Difference]: Finished difference Result 249 states and 351 transitions. [2021-11-13 18:22:25,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:22:25,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 18:22:25,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:25,750 INFO L225 Difference]: With dead ends: 249 [2021-11-13 18:22:25,750 INFO L226 Difference]: Without dead ends: 160 [2021-11-13 18:22:25,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:25,753 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:25,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 20 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 21.52ms Time] [2021-11-13 18:22:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-13 18:22:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2021-11-13 18:22:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4265734265734267) internal successors, (204), 143 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 204 transitions. [2021-11-13 18:22:25,768 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 204 transitions. Word has length 27 [2021-11-13 18:22:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:25,768 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 204 transitions. [2021-11-13 18:22:25,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 204 transitions. [2021-11-13 18:22:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-13 18:22:25,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:25,773 INFO L514 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, 1] [2021-11-13 18:22:25,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:22:25,773 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:25,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash -958935894, now seen corresponding path program 2 times [2021-11-13 18:22:25,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:25,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514086637] [2021-11-13 18:22:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:25,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:25,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:25,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514086637] [2021-11-13 18:22:25,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514086637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:25,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484037866] [2021-11-13 18:22:25,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:22:25,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:25,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:25,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:26,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:22:26,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:22:26,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:26,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 18:22:26,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:26,167 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 [2021-11-13 18:22:26,210 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:26,210 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 [2021-11-13 18:22:26,242 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:22:26,243 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 [2021-11-13 18:22:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:26,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:27,091 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 51 treesize of output 47 [2021-11-13 18:22:27,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 344 [2021-11-13 18:22:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:27,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484037866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:27,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:27,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 28 [2021-11-13 18:22:27,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824048443] [2021-11-13 18:22:27,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:27,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-13 18:22:27,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-13 18:22:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-11-13 18:22:27,291 INFO L87 Difference]: Start difference. First operand 144 states and 204 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:31,430 INFO L93 Difference]: Finished difference Result 725 states and 985 transitions. [2021-11-13 18:22:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-13 18:22:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-13 18:22:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:31,435 INFO L225 Difference]: With dead ends: 725 [2021-11-13 18:22:31,436 INFO L226 Difference]: Without dead ends: 632 [2021-11-13 18:22:31,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2126 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1216, Invalid=6094, Unknown=0, NotChecked=0, Total=7310 [2021-11-13 18:22:31,441 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 550 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 935.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.04ms SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1098.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:31,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 157 Invalid, 1189 Unknown, 0 Unchecked, 10.04ms Time], IncrementalHoareTripleChecker [494 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1098.79ms Time] [2021-11-13 18:22:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-13 18:22:31,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 222. [2021-11-13 18:22:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.3574660633484164) internal successors, (300), 221 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:31,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 300 transitions. [2021-11-13 18:22:31,467 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 300 transitions. Word has length 32 [2021-11-13 18:22:31,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:31,468 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 300 transitions. [2021-11-13 18:22:31,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 300 transitions. [2021-11-13 18:22:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 18:22:31,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:31,470 INFO L514 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, 1, 1] [2021-11-13 18:22:31,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:31,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:31,686 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1605606378, now seen corresponding path program 1 times [2021-11-13 18:22:31,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:31,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602133312] [2021-11-13 18:22:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:31,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:22:31,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:31,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602133312] [2021-11-13 18:22:31,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602133312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:31,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:31,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:22:31,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034795747] [2021-11-13 18:22:31,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:31,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:22:31,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:31,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:22:31,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:31,740 INFO L87 Difference]: Start difference. First operand 222 states and 300 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2021-11-13 18:22:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:31,784 INFO L93 Difference]: Finished difference Result 317 states and 418 transitions. [2021-11-13 18:22:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:22:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-13 18:22:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:31,787 INFO L225 Difference]: With dead ends: 317 [2021-11-13 18:22:31,787 INFO L226 Difference]: Without dead ends: 252 [2021-11-13 18:22:31,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:31,789 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:31,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 39 Invalid, 22 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 23.26ms Time] [2021-11-13 18:22:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-13 18:22:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 206. [2021-11-13 18:22:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.3170731707317074) internal successors, (270), 205 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 270 transitions. [2021-11-13 18:22:31,810 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 270 transitions. Word has length 33 [2021-11-13 18:22:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:31,811 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 270 transitions. [2021-11-13 18:22:31,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2021-11-13 18:22:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 270 transitions. [2021-11-13 18:22:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 18:22:31,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:31,814 INFO L514 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, 1, 1] [2021-11-13 18:22:31,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:22:31,814 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash -554667602, now seen corresponding path program 2 times [2021-11-13 18:22:31,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:31,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053719064] [2021-11-13 18:22:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:31,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:22:31,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:31,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053719064] [2021-11-13 18:22:31,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053719064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:31,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:31,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:22:31,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617292877] [2021-11-13 18:22:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:31,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:22:31,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:22:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:31,851 INFO L87 Difference]: Start difference. First operand 206 states and 270 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2021-11-13 18:22:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:31,891 INFO L93 Difference]: Finished difference Result 266 states and 338 transitions. [2021-11-13 18:22:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:22:31,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-13 18:22:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:31,894 INFO L225 Difference]: With dead ends: 266 [2021-11-13 18:22:31,894 INFO L226 Difference]: Without dead ends: 201 [2021-11-13 18:22:31,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:31,895 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:31,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 57 Invalid, 21 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 22.43ms Time] [2021-11-13 18:22:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-13 18:22:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 171. [2021-11-13 18:22:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2882352941176471) internal successors, (219), 170 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 219 transitions. [2021-11-13 18:22:31,933 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 219 transitions. Word has length 33 [2021-11-13 18:22:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:31,933 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 219 transitions. [2021-11-13 18:22:31,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2021-11-13 18:22:31,934 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 219 transitions. [2021-11-13 18:22:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:22:31,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:31,935 INFO L514 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, 1] [2021-11-13 18:22:31,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:22:31,936 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:31,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:31,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1633319485, now seen corresponding path program 3 times [2021-11-13 18:22:31,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:31,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184178038] [2021-11-13 18:22:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:31,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:32,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:32,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184178038] [2021-11-13 18:22:32,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184178038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:32,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516064738] [2021-11-13 18:22:32,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:22:32,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:32,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:32,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:32,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:22:32,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-13 18:22:32,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:32,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-13 18:22:32,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:32,479 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 [2021-11-13 18:22:32,519 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:22:32,519 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 [2021-11-13 18:22:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:33,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:33,503 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 51 treesize of output 47 [2021-11-13 18:22:33,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 344 [2021-11-13 18:22:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:33,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516064738] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:33,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:33,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 31 [2021-11-13 18:22:33,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054472003] [2021-11-13 18:22:33,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:33,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 18:22:33,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 18:22:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2021-11-13 18:22:33,722 INFO L87 Difference]: Start difference. First operand 171 states and 219 transitions. Second operand has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 31 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:40,251 INFO L93 Difference]: Finished difference Result 887 states and 1110 transitions. [2021-11-13 18:22:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-13 18:22:40,252 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 31 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-13 18:22:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:40,257 INFO L225 Difference]: With dead ends: 887 [2021-11-13 18:22:40,258 INFO L226 Difference]: Without dead ends: 823 [2021-11-13 18:22:40,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3587 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1878, Invalid=10112, Unknown=0, NotChecked=0, Total=11990 [2021-11-13 18:22:40,264 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 790 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1242.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.43ms SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1463.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:40,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 216 Invalid, 1842 Unknown, 0 Unchecked, 9.43ms Time], IncrementalHoareTripleChecker [729 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1463.18ms Time] [2021-11-13 18:22:40,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-13 18:22:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 205. [2021-11-13 18:22:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.2696078431372548) internal successors, (259), 204 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 259 transitions. [2021-11-13 18:22:40,298 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 259 transitions. Word has length 38 [2021-11-13 18:22:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:40,299 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 259 transitions. [2021-11-13 18:22:40,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 31 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 259 transitions. [2021-11-13 18:22:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 18:22:40,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:40,301 INFO L514 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, 1] [2021-11-13 18:22:40,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:40,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-13 18:22:40,515 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:40,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2075466350, now seen corresponding path program 1 times [2021-11-13 18:22:40,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:40,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618407267] [2021-11-13 18:22:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:40,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:40,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:40,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618407267] [2021-11-13 18:22:40,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618407267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:40,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571245425] [2021-11-13 18:22:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:40,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:40,663 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:40,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:22:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:40,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 18:22:40,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:40,772 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 [2021-11-13 18:22:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:41,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:41,221 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 17 treesize of output 15 [2021-11-13 18:22:41,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 18:22:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:41,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571245425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:41,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:41,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 17 [2021-11-13 18:22:41,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325467745] [2021-11-13 18:22:41,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:41,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:22:41,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:22:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:22:41,256 INFO L87 Difference]: Start difference. First operand 205 states and 259 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:44,615 INFO L93 Difference]: Finished difference Result 847 states and 1055 transitions. [2021-11-13 18:22:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-13 18:22:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-13 18:22:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:44,623 INFO L225 Difference]: With dead ends: 847 [2021-11-13 18:22:44,623 INFO L226 Difference]: Without dead ends: 845 [2021-11-13 18:22:44,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5504 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1413, Invalid=12867, Unknown=0, NotChecked=0, Total=14280 [2021-11-13 18:22:44,631 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 205 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1336.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.44ms SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1624.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:44,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 366 Invalid, 2446 Unknown, 0 Unchecked, 10.44ms Time], IncrementalHoareTripleChecker [260 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 1624.37ms Time] [2021-11-13 18:22:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-11-13 18:22:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 322. [2021-11-13 18:22:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.3333333333333333) internal successors, (428), 321 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 428 transitions. [2021-11-13 18:22:44,676 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 428 transitions. Word has length 44 [2021-11-13 18:22:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:44,677 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 428 transitions. [2021-11-13 18:22:44,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 428 transitions. [2021-11-13 18:22:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-13 18:22:44,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:44,679 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:44,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:44,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-13 18:22:44,895 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:44,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash -255895901, now seen corresponding path program 4 times [2021-11-13 18:22:44,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:44,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885742837] [2021-11-13 18:22:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:44,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:45,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:45,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885742837] [2021-11-13 18:22:45,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885742837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:45,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401165349] [2021-11-13 18:22:45,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:22:45,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:45,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:45,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:22:45,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:22:45,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:45,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:22:45,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:46,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:46,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401165349] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:46,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:46,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 33 [2021-11-13 18:22:46,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547510219] [2021-11-13 18:22:46,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:46,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-13 18:22:46,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:46,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-13 18:22:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2021-11-13 18:22:46,481 INFO L87 Difference]: Start difference. First operand 322 states and 428 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:46,870 INFO L93 Difference]: Finished difference Result 514 states and 651 transitions. [2021-11-13 18:22:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:22:46,871 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-13 18:22:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:46,874 INFO L225 Difference]: With dead ends: 514 [2021-11-13 18:22:46,874 INFO L226 Difference]: Without dead ends: 400 [2021-11-13 18:22:46,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:22:46,876 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 273 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 235.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:46,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 179 Invalid, 352 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [52 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 235.82ms Time] [2021-11-13 18:22:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-13 18:22:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 340. [2021-11-13 18:22:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.3067846607669618) internal successors, (443), 339 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 443 transitions. [2021-11-13 18:22:46,919 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 443 transitions. Word has length 50 [2021-11-13 18:22:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:46,919 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 443 transitions. [2021-11-13 18:22:46,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 443 transitions. [2021-11-13 18:22:46,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:22:46,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:46,922 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:46,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:47,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 18:22:47,147 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:47,147 INFO L85 PathProgramCache]: Analyzing trace with hash 588720312, now seen corresponding path program 5 times [2021-11-13 18:22:47,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:47,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92537526] [2021-11-13 18:22:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:47,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:47,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:47,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92537526] [2021-11-13 18:22:47,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92537526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:47,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4011499] [2021-11-13 18:22:47,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:22:47,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:47,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:47,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:47,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:22:47,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-13 18:22:47,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:47,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-13 18:22:47,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:47,793 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 [2021-11-13 18:22:47,865 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:47,866 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 [2021-11-13 18:22:47,881 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:47,882 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 [2021-11-13 18:22:47,902 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:47,902 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 [2021-11-13 18:22:47,921 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:22:47,921 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 [2021-11-13 18:22:48,278 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 [2021-11-13 18:22:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:48,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:48,642 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 17 treesize of output 15 [2021-11-13 18:22:48,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-13 18:22:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:48,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4011499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:48,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:22:48,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 32 [2021-11-13 18:22:48,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676311479] [2021-11-13 18:22:48,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:48,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-13 18:22:48,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-13 18:22:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2021-11-13 18:22:48,720 INFO L87 Difference]: Start difference. First operand 340 states and 443 transitions. Second operand has 32 states, 32 states have (on average 4.53125) internal successors, (145), 32 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) [2021-11-13 18:22:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:53,478 INFO L93 Difference]: Finished difference Result 908 states and 1098 transitions. [2021-11-13 18:22:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-13 18:22:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.53125) internal successors, (145), 32 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 57 [2021-11-13 18:22:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:53,484 INFO L225 Difference]: With dead ends: 908 [2021-11-13 18:22:53,484 INFO L226 Difference]: Without dead ends: 798 [2021-11-13 18:22:53,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6669 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1891, Invalid=17849, Unknown=0, NotChecked=0, Total=19740 [2021-11-13 18:22:53,493 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 579 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1281.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.07ms SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1520.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:53,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 438 Invalid, 2489 Unknown, 0 Unchecked, 9.07ms Time], IncrementalHoareTripleChecker [832 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1520.01ms Time] [2021-11-13 18:22:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-11-13 18:22:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 402. [2021-11-13 18:22:53,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.2493765586034913) internal successors, (501), 401 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 501 transitions. [2021-11-13 18:22:53,557 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 501 transitions. Word has length 57 [2021-11-13 18:22:53,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:53,557 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 501 transitions. [2021-11-13 18:22:53,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.53125) internal successors, (145), 32 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) [2021-11-13 18:22:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 501 transitions. [2021-11-13 18:22:53,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:22:53,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:53,559 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:53,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:53,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 18:22:53,778 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:53,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1863223928, now seen corresponding path program 1 times [2021-11-13 18:22:53,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:53,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103153316] [2021-11-13 18:22:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:53,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:54,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:54,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103153316] [2021-11-13 18:22:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103153316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:54,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116801738] [2021-11-13 18:22:54,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:54,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:54,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:54,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:54,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:22:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:54,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 18:22:54,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:54,129 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 [2021-11-13 18:22:54,145 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 [2021-11-13 18:22:54,154 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:54,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:22:54,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-13 18:22:54,195 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:54,195 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 [2021-11-13 18:22:54,220 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 37 treesize of output 32 [2021-11-13 18:22:54,232 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:54,232 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 [2021-11-13 18:22:54,299 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-13 18:22:54,299 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 [2021-11-13 18:22:54,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:22:54,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:22:54,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-13 18:22:54,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163199770] [2021-11-13 18:22:54,401 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:22:54,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:22:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:22:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:22:54,405 INFO L87 Difference]: Start difference. First operand 402 states and 501 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:56,347 INFO L93 Difference]: Finished difference Result 731 states and 911 transitions. [2021-11-13 18:22:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-13 18:22:56,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 18:22:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:56,352 INFO L225 Difference]: With dead ends: 731 [2021-11-13 18:22:56,352 INFO L226 Difference]: Without dead ends: 729 [2021-11-13 18:22:56,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 17 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=636, Invalid=5064, Unknown=0, NotChecked=0, Total=5700 [2021-11-13 18:22:56,354 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 125 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 876.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1044.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:56,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 269 Invalid, 1825 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [230 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1044.44ms Time] [2021-11-13 18:22:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-13 18:22:56,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 436. [2021-11-13 18:22:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.2459770114942528) internal successors, (542), 435 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) [2021-11-13 18:22:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 542 transitions. [2021-11-13 18:22:56,411 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 542 transitions. Word has length 57 [2021-11-13 18:22:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:56,412 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 542 transitions. [2021-11-13 18:22:56,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:22:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 542 transitions. [2021-11-13 18:22:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 18:22:56,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:56,414 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:56,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:56,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:56,623 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash -197389365, now seen corresponding path program 6 times [2021-11-13 18:22:56,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:56,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192093234] [2021-11-13 18:22:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:56,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:56,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:22:56,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192093234] [2021-11-13 18:22:56,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192093234] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:56,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812809703] [2021-11-13 18:22:56,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:22:56,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:22:56,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:56,905 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:22:56,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 18:22:57,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-13 18:22:57,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:57,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-13 18:22:57,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:57,122 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 [2021-11-13 18:22:57,163 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:22:57,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:22:57,232 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-13 18:22:57,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-13 18:22:57,309 INFO L354 Elim1Store]: treesize reduction 177, result has 17.3 percent of original size [2021-11-13 18:22:57,310 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 [2021-11-13 18:22:57,475 INFO L354 Elim1Store]: treesize reduction 272, result has 15.3 percent of original size [2021-11-13 18:22:57,486 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 [2021-11-13 18:22:57,549 INFO L354 Elim1Store]: treesize reduction 272, result has 15.3 percent of original size [2021-11-13 18:22:57,549 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 [2021-11-13 18:22:57,650 INFO L354 Elim1Store]: treesize reduction 385, result has 13.7 percent of original size [2021-11-13 18:22:57,651 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 [2021-11-13 18:22:57,792 INFO L354 Elim1Store]: treesize reduction 516, result has 12.4 percent of original size [2021-11-13 18:22:57,792 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 [2021-11-13 18:22:57,927 INFO L354 Elim1Store]: treesize reduction 434, result has 12.9 percent of original size [2021-11-13 18:22:57,927 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 83 treesize of output 88 [2021-11-13 18:22:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:59,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:23:00,805 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 97 treesize of output 91 [2021-11-13 18:23:00,812 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-13 18:23:00,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3286 treesize of output 3154 [2021-11-13 18:23:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:01,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812809703] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:23:01,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:23:01,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 17] total 52 [2021-11-13 18:23:01,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354605137] [2021-11-13 18:23:01,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:23:01,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-13 18:23:01,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-13 18:23:01,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-11-13 18:23:01,304 INFO L87 Difference]: Start difference. First operand 436 states and 542 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 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) [2021-11-13 18:23:24,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:24,759 INFO L93 Difference]: Finished difference Result 1584 states and 1835 transitions. [2021-11-13 18:23:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-13 18:23:24,760 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 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) Word has length 63 [2021-11-13 18:23:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:24,766 INFO L225 Difference]: With dead ends: 1584 [2021-11-13 18:23:24,766 INFO L226 Difference]: Without dead ends: 1568 [2021-11-13 18:23:24,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21078 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=7390, Invalid=49970, Unknown=0, NotChecked=0, Total=57360 [2021-11-13 18:23:24,795 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 984 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 3540 mSolverCounterSat, 1213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4798.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 4753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.33ms SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 3540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5450.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:24,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 870 Invalid, 4753 Unknown, 0 Unchecked, 20.33ms Time], IncrementalHoareTripleChecker [1213 Valid, 3540 Invalid, 0 Unknown, 0 Unchecked, 5450.81ms Time] [2021-11-13 18:23:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2021-11-13 18:23:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 673. [2021-11-13 18:23:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.2306547619047619) internal successors, (827), 672 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 827 transitions. [2021-11-13 18:23:24,876 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 827 transitions. Word has length 63 [2021-11-13 18:23:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:24,876 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 827 transitions. [2021-11-13 18:23:24,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 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) [2021-11-13 18:23:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 827 transitions. [2021-11-13 18:23:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 18:23:24,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:24,878 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:24,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:25,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:25,091 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:25,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:25,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2060530293, now seen corresponding path program 2 times [2021-11-13 18:23:25,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:25,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134868851] [2021-11-13 18:23:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:25,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:25,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:25,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134868851] [2021-11-13 18:23:25,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134868851] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:25,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60810924] [2021-11-13 18:23:25,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:23:25,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:25,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:25,389 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:25,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 18:23:25,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:23:25,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:23:25,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-13 18:23:25,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:25,633 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 [2021-11-13 18:23:25,680 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:23:25,681 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 [2021-11-13 18:23:25,704 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:23:25,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:23:25,724 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:23:25,724 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 [2021-11-13 18:23:26,415 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-13 18:23:26,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-13 18:23:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:26,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:23:26,902 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 17 treesize of output 15 [2021-11-13 18:23:26,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-13 18:23:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:27,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60810924] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:23:27,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:23:27,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 42 [2021-11-13 18:23:27,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145536778] [2021-11-13 18:23:27,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:23:27,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-13 18:23:27,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-13 18:23:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 18:23:27,138 INFO L87 Difference]: Start difference. First operand 673 states and 827 transitions. Second operand has 42 states, 42 states have (on average 4.214285714285714) internal successors, (177), 42 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:37,434 INFO L93 Difference]: Finished difference Result 2048 states and 2468 transitions. [2021-11-13 18:23:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2021-11-13 18:23:37,435 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.214285714285714) internal successors, (177), 42 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-13 18:23:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:37,444 INFO L225 Difference]: With dead ends: 2048 [2021-11-13 18:23:37,444 INFO L226 Difference]: Without dead ends: 2038 [2021-11-13 18:23:37,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20789 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=5146, Invalid=49376, Unknown=0, NotChecked=0, Total=54522 [2021-11-13 18:23:37,450 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 760 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 1450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2418.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 4249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.95ms SdHoareTripleChecker+Time, 1450 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2841.91ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:37,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 912 Invalid, 4249 Unknown, 0 Unchecked, 15.95ms Time], IncrementalHoareTripleChecker [1450 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 2841.91ms Time] [2021-11-13 18:23:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2021-11-13 18:23:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 525. [2021-11-13 18:23:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.2251908396946565) internal successors, (642), 524 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 642 transitions. [2021-11-13 18:23:37,531 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 642 transitions. Word has length 63 [2021-11-13 18:23:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:37,531 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 642 transitions. [2021-11-13 18:23:37,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.214285714285714) internal successors, (177), 42 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 642 transitions. [2021-11-13 18:23:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 18:23:37,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:37,533 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:37,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:37,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:37,755 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash -632220725, now seen corresponding path program 2 times [2021-11-13 18:23:37,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:37,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888243015] [2021-11-13 18:23:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:37,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:37,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:37,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888243015] [2021-11-13 18:23:37,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888243015] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:37,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094211699] [2021-11-13 18:23:37,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:23:37,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:37,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:37,988 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:37,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 18:23:38,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:23:38,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:23:38,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-13 18:23:38,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:38,087 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 [2021-11-13 18:23:38,108 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 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-13 18:23:38,118 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:23:38,118 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 [2021-11-13 18:23:38,143 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 [2021-11-13 18:23:38,189 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:23:38,189 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 [2021-11-13 18:23:38,251 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-13 18:23:38,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-13 18:23:38,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:23:38,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:38,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-13 18:23:38,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130181267] [2021-11-13 18:23:38,355 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:23:38,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:23:38,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:38,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:23:38,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:23:38,357 INFO L87 Difference]: Start difference. First operand 525 states and 642 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:41,157 INFO L93 Difference]: Finished difference Result 990 states and 1236 transitions. [2021-11-13 18:23:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-13 18:23:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-13 18:23:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:41,163 INFO L225 Difference]: With dead ends: 990 [2021-11-13 18:23:41,163 INFO L226 Difference]: Without dead ends: 988 [2021-11-13 18:23:41,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4116 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1111, Invalid=10019, Unknown=0, NotChecked=0, Total=11130 [2021-11-13 18:23:41,165 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 142 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1209.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.40ms SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1448.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:41,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 327 Invalid, 2595 Unknown, 0 Unchecked, 7.40ms Time], IncrementalHoareTripleChecker [286 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 1448.32ms Time] [2021-11-13 18:23:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-13 18:23:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 531. [2021-11-13 18:23:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.2245283018867925) internal successors, (649), 530 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 649 transitions. [2021-11-13 18:23:41,237 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 649 transitions. Word has length 63 [2021-11-13 18:23:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:41,238 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 649 transitions. [2021-11-13 18:23:41,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 649 transitions. [2021-11-13 18:23:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:23:41,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:41,240 INFO L514 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, 1, 1] [2021-11-13 18:23:41,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:41,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:41,450 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1179299108, now seen corresponding path program 1 times [2021-11-13 18:23:41,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:41,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687907085] [2021-11-13 18:23:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:41,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-13 18:23:41,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:41,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687907085] [2021-11-13 18:23:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687907085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:41,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:41,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:23:41,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109175652] [2021-11-13 18:23:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:41,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:23:41,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:23:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:41,477 INFO L87 Difference]: Start difference. First operand 531 states and 649 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2021-11-13 18:23:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:41,564 INFO L93 Difference]: Finished difference Result 799 states and 976 transitions. [2021-11-13 18:23:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:23:41,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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 69 [2021-11-13 18:23:41,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:41,568 INFO L225 Difference]: With dead ends: 799 [2021-11-13 18:23:41,568 INFO L226 Difference]: Without dead ends: 458 [2021-11-13 18:23:41,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:23:41,569 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:41,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 22 Unknown, 0 Unchecked, 0.28ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 21.64ms Time] [2021-11-13 18:23:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-13 18:23:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 339. [2021-11-13 18:23:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.1479289940828403) internal successors, (388), 338 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:23:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 388 transitions. [2021-11-13 18:23:41,626 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 388 transitions. Word has length 69 [2021-11-13 18:23:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:41,626 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 388 transitions. [2021-11-13 18:23:41,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2021-11-13 18:23:41,626 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 388 transitions. [2021-11-13 18:23:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 18:23:41,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:41,628 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:41,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 18:23:41,628 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1087082078, now seen corresponding path program 3 times [2021-11-13 18:23:41,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:41,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598960351] [2021-11-13 18:23:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:41,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:42,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:42,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598960351] [2021-11-13 18:23:42,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598960351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:42,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879425684] [2021-11-13 18:23:42,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:23:42,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:42,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:42,011 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:42,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 18:23:42,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:23:42,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:23:42,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-13 18:23:42,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:42,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-13 18:23:42,659 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:23:42,659 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 [2021-11-13 18:23:42,685 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:23:42,686 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 18:23:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:43,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:23:44,202 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 35 treesize of output 31 [2021-11-13 18:23:44,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-11-13 18:23:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:23:44,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879425684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:23:44,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:23:44,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 48 [2021-11-13 18:23:44,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022297694] [2021-11-13 18:23:44,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:23:44,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-13 18:23:44,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:44,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-13 18:23:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2068, Unknown=0, NotChecked=0, Total=2256 [2021-11-13 18:23:44,460 INFO L87 Difference]: Start difference. First operand 339 states and 388 transitions. Second operand has 48 states, 48 states have (on average 4.145833333333333) internal successors, (199), 48 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) [2021-11-13 18:24:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:00,934 INFO L93 Difference]: Finished difference Result 1133 states and 1296 transitions. [2021-11-13 18:24:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2021-11-13 18:24:00,934 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.145833333333333) internal successors, (199), 48 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 69 [2021-11-13 18:24:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:00,939 INFO L225 Difference]: With dead ends: 1133 [2021-11-13 18:24:00,939 INFO L226 Difference]: Without dead ends: 995 [2021-11-13 18:24:00,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28627 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=6705, Invalid=67007, Unknown=0, NotChecked=0, Total=73712 [2021-11-13 18:24:00,943 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1180 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 3989 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3314.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 5168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.59ms SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 3989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3886.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:00,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 725 Invalid, 5168 Unknown, 0 Unchecked, 21.59ms Time], IncrementalHoareTripleChecker [1179 Valid, 3989 Invalid, 0 Unknown, 0 Unchecked, 3886.03ms Time] [2021-11-13 18:24:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2021-11-13 18:24:01,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 355. [2021-11-13 18:24:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.1214689265536724) internal successors, (397), 354 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 397 transitions. [2021-11-13 18:24:01,015 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 397 transitions. Word has length 69 [2021-11-13 18:24:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:01,016 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 397 transitions. [2021-11-13 18:24:01,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.145833333333333) internal successors, (199), 48 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) [2021-11-13 18:24:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 397 transitions. [2021-11-13 18:24:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 18:24:01,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:01,018 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:01,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:01,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-13 18:24:01,227 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash 496706801, now seen corresponding path program 4 times [2021-11-13 18:24:01,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:01,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187782243] [2021-11-13 18:24:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:01,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:01,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:01,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187782243] [2021-11-13 18:24:01,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187782243] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:24:01,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956049537] [2021-11-13 18:24:01,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:24:01,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:01,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:01,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:01,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 18:24:01,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:24:01,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:24:01,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-13 18:24:01,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:01,708 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 [2021-11-13 18:24:01,747 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:24:01,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 18:24:02,515 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-13 18:24:02,515 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 [2021-11-13 18:24:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:02,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:24:03,003 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 17 treesize of output 15 [2021-11-13 18:24:03,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 18:24:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:03,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956049537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:24:03,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:24:03,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 42 [2021-11-13 18:24:03,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470232318] [2021-11-13 18:24:03,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:24:03,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-13 18:24:03,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-13 18:24:03,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1583, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 18:24:03,060 INFO L87 Difference]: Start difference. First operand 355 states and 397 transitions. Second operand has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:21,572 INFO L93 Difference]: Finished difference Result 1823 states and 2087 transitions. [2021-11-13 18:24:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2021-11-13 18:24:21,574 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 18:24:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:21,582 INFO L225 Difference]: With dead ends: 1823 [2021-11-13 18:24:21,582 INFO L226 Difference]: Without dead ends: 1769 [2021-11-13 18:24:21,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51666 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=7814, Invalid=118566, Unknown=0, NotChecked=0, Total=126380 [2021-11-13 18:24:21,590 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 1502 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 4427 mSolverCounterSat, 1826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3815.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 6253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.83ms SdHoareTripleChecker+Time, 1826 IncrementalHoareTripleChecker+Valid, 4427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4493.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:21,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 1210 Invalid, 6253 Unknown, 0 Unchecked, 24.83ms Time], IncrementalHoareTripleChecker [1826 Valid, 4427 Invalid, 0 Unknown, 0 Unchecked, 4493.94ms Time] [2021-11-13 18:24:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-11-13 18:24:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 785. [2021-11-13 18:24:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 784 states have (on average 1.2040816326530612) internal successors, (944), 784 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 944 transitions. [2021-11-13 18:24:21,789 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 944 transitions. Word has length 75 [2021-11-13 18:24:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:21,790 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 944 transitions. [2021-11-13 18:24:21,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 944 transitions. [2021-11-13 18:24:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 18:24:21,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:21,793 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:21,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:22,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-13 18:24:22,019 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2135196431, now seen corresponding path program 2 times [2021-11-13 18:24:22,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:22,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355056012] [2021-11-13 18:24:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:22,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:22,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:22,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355056012] [2021-11-13 18:24:22,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355056012] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:24:22,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700723413] [2021-11-13 18:24:22,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:24:22,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:22,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:22,303 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:22,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 18:24:22,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:24:22,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:24:22,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-13 18:24:22,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:22,467 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 [2021-11-13 18:24:22,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:24:22,503 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:24:22,504 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 [2021-11-13 18:24:22,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:24:22,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:24:22,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-13 18:24:22,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814958073] [2021-11-13 18:24:22,600 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:24:22,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:24:22,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:22,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:24:22,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:24:22,603 INFO L87 Difference]: Start difference. First operand 785 states and 944 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 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) [2021-11-13 18:24:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:29,596 INFO L93 Difference]: Finished difference Result 1975 states and 2426 transitions. [2021-11-13 18:24:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-11-13 18:24:29,597 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 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) Word has length 75 [2021-11-13 18:24:29,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:29,605 INFO L225 Difference]: With dead ends: 1975 [2021-11-13 18:24:29,606 INFO L226 Difference]: Without dead ends: 1973 [2021-11-13 18:24:29,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19929 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4566, Invalid=40590, Unknown=0, NotChecked=0, Total=45156 [2021-11-13 18:24:29,610 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 221 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1980.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.95ms SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2339.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:29,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 351 Invalid, 2993 Unknown, 0 Unchecked, 11.95ms Time], IncrementalHoareTripleChecker [487 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2339.12ms Time] [2021-11-13 18:24:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2021-11-13 18:24:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 845. [2021-11-13 18:24:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 1.2037914691943128) internal successors, (1016), 844 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1016 transitions. [2021-11-13 18:24:29,864 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1016 transitions. Word has length 75 [2021-11-13 18:24:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:29,864 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1016 transitions. [2021-11-13 18:24:29,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 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) [2021-11-13 18:24:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1016 transitions. [2021-11-13 18:24:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 18:24:29,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:29,868 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:29,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:30,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-13 18:24:30,087 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash -644572860, now seen corresponding path program 3 times [2021-11-13 18:24:30,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:30,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633542583] [2021-11-13 18:24:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:30,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:30,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:30,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633542583] [2021-11-13 18:24:30,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633542583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:24:30,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482046186] [2021-11-13 18:24:30,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:24:30,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:30,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:30,389 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:30,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 18:24:30,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-13 18:24:30,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:24:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-13 18:24:30,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:30,660 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 [2021-11-13 18:24:30,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:24:30,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:24:30,790 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 [2021-11-13 18:24:30,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,877 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:24:30,878 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 [2021-11-13 18:24:30,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:30,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:24:30,991 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 [2021-11-13 18:24:31,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,244 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:24:31,245 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 60 treesize of output 71 [2021-11-13 18:24:31,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,392 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:24:31,393 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 69 treesize of output 83 [2021-11-13 18:24:31,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,551 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:24:31,551 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 78 treesize of output 95 [2021-11-13 18:24:31,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:24:31,732 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 90 treesize of output 110 [2021-11-13 18:24:31,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:31,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:24:32,056 INFO L354 Elim1Store]: treesize reduction 718, result has 11.4 percent of original size [2021-11-13 18:24:32,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 105 treesize of output 128 [2021-11-13 18:24:32,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:24:32,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:24:32,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-11-13 18:24:32,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189775035] [2021-11-13 18:24:32,333 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:24:32,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:24:32,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:24:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2021-11-13 18:24:32,335 INFO L87 Difference]: Start difference. First operand 845 states and 1016 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:39,714 INFO L93 Difference]: Finished difference Result 2040 states and 2495 transitions. [2021-11-13 18:24:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2021-11-13 18:24:39,715 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-13 18:24:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:39,725 INFO L225 Difference]: With dead ends: 2040 [2021-11-13 18:24:39,725 INFO L226 Difference]: Without dead ends: 2038 [2021-11-13 18:24:39,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16643 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3548, Invalid=37458, Unknown=0, NotChecked=0, Total=41006 [2021-11-13 18:24:39,729 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 222 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2061.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.29ms SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2485.86ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:39,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 422 Invalid, 3345 Unknown, 0 Unchecked, 13.29ms Time], IncrementalHoareTripleChecker [440 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 2485.86ms Time] [2021-11-13 18:24:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2021-11-13 18:24:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 921. [2021-11-13 18:24:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 1.2) internal successors, (1104), 920 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1104 transitions. [2021-11-13 18:24:39,990 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1104 transitions. Word has length 81 [2021-11-13 18:24:39,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:39,991 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1104 transitions. [2021-11-13 18:24:39,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1104 transitions. [2021-11-13 18:24:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 18:24:39,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:39,997 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:40,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:40,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:40,203 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:40,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1404482560, now seen corresponding path program 1 times [2021-11-13 18:24:40,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:40,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052385727] [2021-11-13 18:24:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:40,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-13 18:24:40,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:40,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052385727] [2021-11-13 18:24:40,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052385727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:40,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:40,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:24:40,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2933057] [2021-11-13 18:24:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:40,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:24:40,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:24:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:40,261 INFO L87 Difference]: Start difference. First operand 921 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:40,493 INFO L93 Difference]: Finished difference Result 1687 states and 2065 transitions. [2021-11-13 18:24:40,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:24:40,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-13 18:24:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:40,499 INFO L225 Difference]: With dead ends: 1687 [2021-11-13 18:24:40,499 INFO L226 Difference]: Without dead ends: 1231 [2021-11-13 18:24:40,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:24:40,501 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:40,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 56 Invalid, 20 Unknown, 0 Unchecked, 0.35ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 21.93ms Time] [2021-11-13 18:24:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-11-13 18:24:40,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1023. [2021-11-13 18:24:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.2015655577299413) internal successors, (1228), 1022 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1228 transitions. [2021-11-13 18:24:40,689 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1228 transitions. Word has length 82 [2021-11-13 18:24:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:40,689 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1228 transitions. [2021-11-13 18:24:40,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1228 transitions. [2021-11-13 18:24:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 18:24:40,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:40,694 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:40,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 18:24:40,694 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:40,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1667229289, now seen corresponding path program 7 times [2021-11-13 18:24:40,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:40,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80677438] [2021-11-13 18:24:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:40,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 255 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:41,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:41,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80677438] [2021-11-13 18:24:41,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80677438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:24:41,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717402713] [2021-11-13 18:24:41,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:24:41,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:41,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:41,363 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:41,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 18:24:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:24:41,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:42,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:24:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 310 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:43,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717402713] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:24:43,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:24:43,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 51 [2021-11-13 18:24:43,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882005621] [2021-11-13 18:24:43,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:24:43,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-13 18:24:43,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-13 18:24:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1903, Unknown=0, NotChecked=0, Total=2550 [2021-11-13 18:24:43,715 INFO L87 Difference]: Start difference. First operand 1023 states and 1228 transitions. Second operand has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 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) [2021-11-13 18:24:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:44,547 INFO L93 Difference]: Finished difference Result 1325 states and 1564 transitions. [2021-11-13 18:24:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 18:24:44,548 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 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 87 [2021-11-13 18:24:44,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:44,552 INFO L225 Difference]: With dead ends: 1325 [2021-11-13 18:24:44,552 INFO L226 Difference]: Without dead ends: 950 [2021-11-13 18:24:44,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=808, Invalid=2498, Unknown=0, NotChecked=0, Total=3306 [2021-11-13 18:24:44,555 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 489 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 343.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 413.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:44,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 431 Invalid, 654 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [60 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 413.12ms Time] [2021-11-13 18:24:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-11-13 18:24:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 932. [2021-11-13 18:24:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 1.20515574650913) internal successors, (1122), 931 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:24:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1122 transitions. [2021-11-13 18:24:44,775 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1122 transitions. Word has length 87 [2021-11-13 18:24:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:44,775 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1122 transitions. [2021-11-13 18:24:44,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 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) [2021-11-13 18:24:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1122 transitions. [2021-11-13 18:24:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 18:24:44,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:44,780 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:44,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:24:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-13 18:24:44,995 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1528143710, now seen corresponding path program 8 times [2021-11-13 18:24:44,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:44,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040506984] [2021-11-13 18:24:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:44,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 20 proven. 314 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:45,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:45,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040506984] [2021-11-13 18:24:45,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040506984] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:24:45,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341907138] [2021-11-13 18:24:45,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:24:45,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:24:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:24:45,679 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:24:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 18:24:45,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:24:45,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:24:45,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-13 18:24:45,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:24:46,128 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 [2021-11-13 18:24:46,183 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:24:46,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-13 18:24:46,213 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:24:46,213 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 [2021-11-13 18:24:46,234 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:24:46,234 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 [2021-11-13 18:24:46,259 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:24:46,260 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 [2021-11-13 18:24:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 20 proven. 314 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:47,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:24:48,900 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 35 treesize of output 31 [2021-11-13 18:24:48,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-11-13 18:24:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:24:49,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341907138] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:24:49,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:24:49,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 22] total 60 [2021-11-13 18:24:49,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078179068] [2021-11-13 18:24:49,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:24:49,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-13 18:24:49,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-13 18:24:49,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3312, Unknown=0, NotChecked=0, Total=3540 [2021-11-13 18:24:49,353 INFO L87 Difference]: Start difference. First operand 932 states and 1122 transitions. Second operand has 60 states, 60 states have (on average 4.566666666666666) internal successors, (274), 60 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:25:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:22,335 INFO L93 Difference]: Finished difference Result 1983 states and 2267 transitions. [2021-11-13 18:25:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2021-11-13 18:25:22,336 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.566666666666666) internal successors, (274), 60 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 18:25:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:22,343 INFO L225 Difference]: With dead ends: 1983 [2021-11-13 18:25:22,344 INFO L226 Difference]: Without dead ends: 1973 [2021-11-13 18:25:22,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 146 SyntacticMatches, 7 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41364 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=9049, Invalid=103511, Unknown=0, NotChecked=0, Total=112560 [2021-11-13 18:25:22,349 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1348 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 6033 mSolverCounterSat, 1440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5113.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 7473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.71ms SdHoareTripleChecker+Time, 1440 IncrementalHoareTripleChecker+Valid, 6033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6018.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:22,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 1110 Invalid, 7473 Unknown, 0 Unchecked, 28.71ms Time], IncrementalHoareTripleChecker [1440 Valid, 6033 Invalid, 0 Unknown, 0 Unchecked, 6018.05ms Time] [2021-11-13 18:25:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2021-11-13 18:25:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1057. [2021-11-13 18:25:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.191287878787879) internal successors, (1258), 1056 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:25:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1258 transitions. [2021-11-13 18:25:22,539 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1258 transitions. Word has length 94 [2021-11-13 18:25:22,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:22,539 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 1258 transitions. [2021-11-13 18:25:22,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.566666666666666) internal successors, (274), 60 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:25:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1258 transitions. [2021-11-13 18:25:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-13 18:25:22,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:22,544 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:22,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:22,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:22,771 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:22,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2061712092, now seen corresponding path program 4 times [2021-11-13 18:25:22,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:22,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431706060] [2021-11-13 18:25:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:22,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:23,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:23,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431706060] [2021-11-13 18:25:23,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431706060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:25:23,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229964049] [2021-11-13 18:25:23,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:25:23,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:23,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:23,126 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:23,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 18:25:23,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:25:23,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:25:23,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-13 18:25:23,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:23,268 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 [2021-11-13 18:25:23,287 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 [2021-11-13 18:25:23,296 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:25:23,296 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 [2021-11-13 18:25:23,318 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 [2021-11-13 18:25:23,329 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:25:23,330 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 [2021-11-13 18:25:23,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:25:23,359 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:25:23,359 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 [2021-11-13 18:25:23,421 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-13 18:25:23,421 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 [2021-11-13 18:25:23,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:25:23,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:25:23,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-13 18:25:23,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439144700] [2021-11-13 18:25:23,510 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:25:23,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 18:25:23,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:23,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 18:25:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:25:23,512 INFO L87 Difference]: Start difference. First operand 1057 states and 1258 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:25:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:25:34,571 INFO L93 Difference]: Finished difference Result 2978 states and 3571 transitions. [2021-11-13 18:25:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2021-11-13 18:25:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-13 18:25:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:25:34,585 INFO L225 Difference]: With dead ends: 2978 [2021-11-13 18:25:34,585 INFO L226 Difference]: Without dead ends: 2976 [2021-11-13 18:25:34,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38009 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=6579, Invalid=78977, Unknown=0, NotChecked=0, Total=85556 [2021-11-13 18:25:34,592 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 252 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 4611 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3287.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 5277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.67ms SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 4611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3932.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:25:34,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 578 Invalid, 5277 Unknown, 0 Unchecked, 18.67ms Time], IncrementalHoareTripleChecker [666 Valid, 4611 Invalid, 0 Unknown, 0 Unchecked, 3932.30ms Time] [2021-11-13 18:25:34,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-11-13 18:25:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1053. [2021-11-13 18:25:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1052 states have (on average 1.1948669201520912) internal successors, (1257), 1052 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:25:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1257 transitions. [2021-11-13 18:25:34,808 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1257 transitions. Word has length 94 [2021-11-13 18:25:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:25:34,808 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1257 transitions. [2021-11-13 18:25:34,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:25:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1257 transitions. [2021-11-13 18:25:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 18:25:34,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:25:34,812 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:25:34,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:25:35,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:35,027 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:25:35,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:25:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1560032309, now seen corresponding path program 9 times [2021-11-13 18:25:35,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:25:35,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033967021] [2021-11-13 18:25:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:25:35,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:25:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:25:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 22 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:35,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:25:35,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033967021] [2021-11-13 18:25:35,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033967021] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:25:35,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60688626] [2021-11-13 18:25:35,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:25:35,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:25:35,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:25:35,603 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:25:35,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 18:25:36,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-11-13 18:25:36,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:25:36,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-13 18:25:36,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:25:36,317 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 [2021-11-13 18:25:36,368 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:25:36,368 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 [2021-11-13 18:25:36,387 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:25:36,387 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 [2021-11-13 18:25:36,411 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:25:36,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:25:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 22 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:37,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:25:38,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-13 18:25:38,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 153 [2021-11-13 18:25:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 22 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:25:39,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60688626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:25:39,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:25:39,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 58 [2021-11-13 18:25:39,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407147043] [2021-11-13 18:25:39,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:25:39,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-13 18:25:39,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:25:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-13 18:25:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3082, Unknown=0, NotChecked=0, Total=3306 [2021-11-13 18:25:39,139 INFO L87 Difference]: Start difference. First operand 1053 states and 1257 transitions. Second operand has 58 states, 58 states have (on average 4.827586206896552) internal successors, (280), 58 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:06,198 INFO L93 Difference]: Finished difference Result 2184 states and 2514 transitions. [2021-11-13 18:26:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 325 states. [2021-11-13 18:26:06,199 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.827586206896552) internal successors, (280), 58 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-13 18:26:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:06,212 INFO L225 Difference]: With dead ends: 2184 [2021-11-13 18:26:06,213 INFO L226 Difference]: Without dead ends: 2138 [2021-11-13 18:26:06,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 163 SyntacticMatches, 4 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55346 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=10003, Invalid=131749, Unknown=0, NotChecked=0, Total=141752 [2021-11-13 18:26:06,226 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 1990 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 5959 mSolverCounterSat, 1993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4786.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 7952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.07ms SdHoareTripleChecker+Time, 1993 IncrementalHoareTripleChecker+Valid, 5959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5669.45ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:06,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1990 Valid, 1336 Invalid, 7952 Unknown, 0 Unchecked, 30.07ms Time], IncrementalHoareTripleChecker [1993 Valid, 5959 Invalid, 0 Unknown, 0 Unchecked, 5669.45ms Time] [2021-11-13 18:26:06,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2021-11-13 18:26:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1101. [2021-11-13 18:26:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 1.190909090909091) internal successors, (1310), 1100 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1310 transitions. [2021-11-13 18:26:06,425 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1310 transitions. Word has length 100 [2021-11-13 18:26:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:06,426 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1310 transitions. [2021-11-13 18:26:06,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.827586206896552) internal successors, (280), 58 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1310 transitions. [2021-11-13 18:26:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 18:26:06,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:06,429 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:06,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:06,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-13 18:26:06,643 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:26:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1004948533, now seen corresponding path program 3 times [2021-11-13 18:26:06,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:06,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653085483] [2021-11-13 18:26:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:06,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:07,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:26:07,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653085483] [2021-11-13 18:26:07,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653085483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:26:07,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283069875] [2021-11-13 18:26:07,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:26:07,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:26:07,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:26:07,023 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:26:07,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 18:26:07,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-13 18:26:07,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:26:07,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-13 18:26:07,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:07,295 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 [2021-11-13 18:26:07,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,344 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 [2021-11-13 18:26:07,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,422 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:07,423 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 [2021-11-13 18:26:07,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,521 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:07,521 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 [2021-11-13 18:26:07,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,633 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:07,634 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 [2021-11-13 18:26:07,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,877 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:07,877 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 60 treesize of output 71 [2021-11-13 18:26:07,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:07,994 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:07,995 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 72 treesize of output 86 [2021-11-13 18:26:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,120 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:08,121 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 84 treesize of output 101 [2021-11-13 18:26:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,259 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:08,259 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 96 treesize of output 116 [2021-11-13 18:26:08,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,446 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:26:08,447 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 108 treesize of output 131 [2021-11-13 18:26:08,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:08,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,055 INFO L354 Elim1Store]: treesize reduction 904, result has 10.3 percent of original size [2021-11-13 18:26:09,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 128 treesize of output 154 [2021-11-13 18:26:09,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,447 INFO L354 Elim1Store]: treesize reduction 1108, result has 9.5 percent of original size [2021-11-13 18:26:09,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 140 treesize of output 169 [2021-11-13 18:26:09,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:09,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,081 INFO L354 Elim1Store]: treesize reduction 1330, result has 8.8 percent of original size [2021-11-13 18:26:10,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 155 treesize of output 181 [2021-11-13 18:26:10,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,728 INFO L354 Elim1Store]: treesize reduction 1570, result has 8.2 percent of original size [2021-11-13 18:26:10,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 10 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 170 treesize of output 196 [2021-11-13 18:26:10,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:10,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:26:11,439 INFO L354 Elim1Store]: treesize reduction 1828, result has 7.7 percent of original size [2021-11-13 18:26:11,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 10 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 182 treesize of output 211 [2021-11-13 18:26:11,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:26:11,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:26:11,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-13 18:26:11,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219848393] [2021-11-13 18:26:11,941 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:26:11,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 18:26:11,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:26:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 18:26:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1417, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 18:26:11,942 INFO L87 Difference]: Start difference. First operand 1101 states and 1310 transitions. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:29,113 INFO L93 Difference]: Finished difference Result 3528 states and 4245 transitions. [2021-11-13 18:26:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 387 states. [2021-11-13 18:26:29,114 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-13 18:26:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:26:29,123 INFO L225 Difference]: With dead ends: 3528 [2021-11-13 18:26:29,123 INFO L226 Difference]: Without dead ends: 3526 [2021-11-13 18:26:29,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76280 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=11620, Invalid=156070, Unknown=0, NotChecked=0, Total=167690 [2021-11-13 18:26:29,133 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 312 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3524.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 5762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.59ms SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4183.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:26:29,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 620 Invalid, 5762 Unknown, 0 Unchecked, 19.59ms Time], IncrementalHoareTripleChecker [810 Valid, 4952 Invalid, 0 Unknown, 0 Unchecked, 4183.18ms Time] [2021-11-13 18:26:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2021-11-13 18:26:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 1107. [2021-11-13 18:26:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 1.1907775768535263) internal successors, (1317), 1106 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1317 transitions. [2021-11-13 18:26:29,388 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1317 transitions. Word has length 100 [2021-11-13 18:26:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:26:29,389 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1317 transitions. [2021-11-13 18:26:29,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1317 transitions. [2021-11-13 18:26:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 18:26:29,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:26:29,391 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:29,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:26:29,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-13 18:26:29,592 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:26:29,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash 660065672, now seen corresponding path program 10 times [2021-11-13 18:26:29,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:29,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962153349] [2021-11-13 18:26:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:29,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 24 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:30,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:26:30,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962153349] [2021-11-13 18:26:30,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962153349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:26:30,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164400259] [2021-11-13 18:26:30,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:26:30,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:26:30,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:26:30,334 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:26:30,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-13 18:26:30,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:26:30,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:26:30,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-13 18:26:30,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:26:30,747 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 [2021-11-13 18:26:30,802 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:26:30,802 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 [2021-11-13 18:26:30,826 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:26:30,826 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 [2021-11-13 18:26:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 24 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:32,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:26:33,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-13 18:26:33,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-11-13 18:26:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:34,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164400259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:26:34,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:26:34,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 24] total 66 [2021-11-13 18:26:34,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219445077] [2021-11-13 18:26:34,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:26:34,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:26:34,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:26:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:26:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=4035, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:26:34,410 INFO L87 Difference]: Start difference. First operand 1107 states and 1317 transitions. Second operand has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:30,078 INFO L93 Difference]: Finished difference Result 4550 states and 5318 transitions. [2021-11-13 18:27:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 373 states. [2021-11-13 18:27:30,079 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-13 18:27:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:30,088 INFO L225 Difference]: With dead ends: 4550 [2021-11-13 18:27:30,089 INFO L226 Difference]: Without dead ends: 3786 [2021-11-13 18:27:30,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 167 SyntacticMatches, 4 SemanticMatches, 433 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72774 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=13930, Invalid=174860, Unknown=0, NotChecked=0, Total=188790 [2021-11-13 18:27:30,103 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1825 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 7692 mSolverCounterSat, 2017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7577.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 9709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.83ms SdHoareTripleChecker+Time, 2017 IncrementalHoareTripleChecker+Valid, 7692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8772.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:30,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 1207 Invalid, 9709 Unknown, 0 Unchecked, 38.83ms Time], IncrementalHoareTripleChecker [2017 Valid, 7692 Invalid, 0 Unknown, 0 Unchecked, 8772.89ms Time] [2021-11-13 18:27:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-11-13 18:27:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 1723. [2021-11-13 18:27:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 1.194541231126597) internal successors, (2057), 1722 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2057 transitions. [2021-11-13 18:27:30,461 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2057 transitions. Word has length 106 [2021-11-13 18:27:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:30,461 INFO L470 AbstractCegarLoop]: Abstraction has 1723 states and 2057 transitions. [2021-11-13 18:27:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.696969696969697) internal successors, (310), 66 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2057 transitions. [2021-11-13 18:27:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 18:27:30,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:30,465 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:30,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:30,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-13 18:27:30,679 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:27:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -116660468, now seen corresponding path program 1 times [2021-11-13 18:27:30,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:30,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135269352] [2021-11-13 18:27:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:30,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-13 18:27:30,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:30,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135269352] [2021-11-13 18:27:30,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135269352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:30,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:30,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:27:30,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981749600] [2021-11-13 18:27:30,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:30,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:30,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:30,715 INFO L87 Difference]: Start difference. First operand 1723 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:31,280 INFO L93 Difference]: Finished difference Result 3409 states and 4092 transitions. [2021-11-13 18:27:31,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:31,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-13 18:27:31,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:31,285 INFO L225 Difference]: With dead ends: 3409 [2021-11-13 18:27:31,286 INFO L226 Difference]: Without dead ends: 2143 [2021-11-13 18:27:31,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:31,289 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:31,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 20 Unknown, 0 Unchecked, 0.35ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 22.68ms Time] [2021-11-13 18:27:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2021-11-13 18:27:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1685. [2021-11-13 18:27:31,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.1704275534441806) internal successors, (1971), 1684 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 1971 transitions. [2021-11-13 18:27:31,700 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 1971 transitions. Word has length 106 [2021-11-13 18:27:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:31,700 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 1971 transitions. [2021-11-13 18:27:31,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 1971 transitions. [2021-11-13 18:27:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 18:27:31,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:31,707 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:31,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-13 18:27:31,708 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:27:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1209708340, now seen corresponding path program 1 times [2021-11-13 18:27:31,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:31,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947796830] [2021-11-13 18:27:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:31,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-13 18:27:31,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:31,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947796830] [2021-11-13 18:27:31,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947796830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:31,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:31,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:27:31,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262998610] [2021-11-13 18:27:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:31,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:27:31,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:27:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:27:31,775 INFO L87 Difference]: Start difference. First operand 1685 states and 1971 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-11-13 18:27:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:27:32,086 INFO L93 Difference]: Finished difference Result 1941 states and 2259 transitions. [2021-11-13 18:27:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:27:32,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 106 [2021-11-13 18:27:32,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:27:32,088 INFO L225 Difference]: With dead ends: 1941 [2021-11-13 18:27:32,089 INFO L226 Difference]: Without dead ends: 1333 [2021-11-13 18:27:32,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:27:32,090 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:27:32,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 27.80ms Time] [2021-11-13 18:27:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-11-13 18:27:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1314. [2021-11-13 18:27:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.1591774562071593) internal successors, (1522), 1313 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:27:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1522 transitions. [2021-11-13 18:27:32,284 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1522 transitions. Word has length 106 [2021-11-13 18:27:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:27:32,284 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1522 transitions. [2021-11-13 18:27:32,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2021-11-13 18:27:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1522 transitions. [2021-11-13 18:27:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 18:27:32,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:27:32,288 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:32,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-13 18:27:32,289 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:27:32,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1654110026, now seen corresponding path program 1 times [2021-11-13 18:27:32,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:32,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262144351] [2021-11-13 18:27:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:32,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:32,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:32,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262144351] [2021-11-13 18:27:32,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262144351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:27:32,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039259047] [2021-11-13 18:27:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:32,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:27:32,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:27:32,954 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:27:32,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-13 18:27:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:33,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-13 18:27:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:33,136 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 [2021-11-13 18:27:33,172 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:27:33,172 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 [2021-11-13 18:27:33,220 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-13 18:27:33,220 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 [2021-11-13 18:27:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:34,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:35,320 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 17 treesize of output 15 [2021-11-13 18:27:35,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 18:27:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:35,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039259047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:27:35,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:27:35,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 21] total 56 [2021-11-13 18:27:35,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729913871] [2021-11-13 18:27:35,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:27:35,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-13 18:27:35,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-13 18:27:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2021-11-13 18:27:35,378 INFO L87 Difference]: Start difference. First operand 1314 states and 1522 transitions. Second operand has 56 states, 56 states have (on average 5.160714285714286) internal successors, (289), 56 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:55,985 INFO L93 Difference]: Finished difference Result 5803 states and 6613 transitions. [2021-11-13 18:28:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1089 states. [2021-11-13 18:28:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.160714285714286) internal successors, (289), 56 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-13 18:28:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:55,995 INFO L225 Difference]: With dead ends: 5803 [2021-11-13 18:28:55,995 INFO L226 Difference]: Without dead ends: 5801 [2021-11-13 18:28:56,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 174 SyntacticMatches, 7 SemanticMatches, 1123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589554 ImplicationChecksByTransitivity, 71.2s TimeCoverageRelationStatistics Valid=49581, Invalid=1214919, Unknown=0, NotChecked=0, Total=1264500 [2021-11-13 18:28:56,085 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 7264 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 9412 mSolverCounterSat, 3372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7190.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7264 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 12784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.03ms SdHoareTripleChecker+Time, 3372 IncrementalHoareTripleChecker+Valid, 9412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8503.60ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:56,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7264 Valid, 1494 Invalid, 12784 Unknown, 0 Unchecked, 57.03ms Time], IncrementalHoareTripleChecker [3372 Valid, 9412 Invalid, 0 Unknown, 0 Unchecked, 8503.60ms Time] [2021-11-13 18:28:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2021-11-13 18:28:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 1325. [2021-11-13 18:28:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.1578549848942599) internal successors, (1533), 1324 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1533 transitions. [2021-11-13 18:28:56,357 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1533 transitions. Word has length 106 [2021-11-13 18:28:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:56,357 INFO L470 AbstractCegarLoop]: Abstraction has 1325 states and 1533 transitions. [2021-11-13 18:28:56,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.160714285714286) internal successors, (289), 56 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:28:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1533 transitions. [2021-11-13 18:28:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 18:28:56,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:56,361 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:56,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:56,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-13 18:28:56,580 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1099029659, now seen corresponding path program 11 times [2021-11-13 18:28:56,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:56,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591431367] [2021-11-13 18:28:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:56,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 26 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:28:57,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:57,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591431367] [2021-11-13 18:28:57,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591431367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:28:57,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124330493] [2021-11-13 18:28:57,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:28:57,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:28:57,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:57,281 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:28:57,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-13 18:28:57,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-11-13 18:28:57,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:28:57,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:28:57,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:58,022 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 [2021-11-13 18:28:58,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 18:28:58,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,207 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:58,208 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 [2021-11-13 18:28:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,286 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:58,287 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 [2021-11-13 18:28:58,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,382 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:58,383 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 [2021-11-13 18:28:58,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,488 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:58,489 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 [2021-11-13 18:28:58,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,610 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:58,611 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 83 treesize of output 97 [2021-11-13 18:28:58,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,888 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:58,888 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 77 treesize of output 94 [2021-11-13 18:28:58,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:58,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,029 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:59,030 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 86 treesize of output 106 [2021-11-13 18:28:59,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:59,196 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 95 treesize of output 118 [2021-11-13 18:28:59,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,376 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:59,376 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 110 treesize of output 130 [2021-11-13 18:28:59,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:28:59,595 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:28:59,596 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 110 treesize of output 127 [2021-11-13 18:29:05,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:29:05,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 104 treesize of output 40 [2021-11-13 18:29:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 26 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:05,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:07,692 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 63 treesize of output 59 [2021-11-13 18:29:07,697 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-13 18:29:07,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 928 treesize of output 864 [2021-11-13 18:29:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 26 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:07,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124330493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:29:07,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:29:07,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 35, 25] total 79 [2021-11-13 18:29:07,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583749597] [2021-11-13 18:29:07,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:07,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-13 18:29:07,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-13 18:29:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=5778, Unknown=0, NotChecked=0, Total=6162 [2021-11-13 18:29:07,873 INFO L87 Difference]: Start difference. First operand 1325 states and 1533 transitions. Second operand has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:29:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:49,452 INFO L93 Difference]: Finished difference Result 2962 states and 3270 transitions. [2021-11-13 18:29:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2021-11-13 18:29:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-13 18:29:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:49,457 INFO L225 Difference]: With dead ends: 2962 [2021-11-13 18:29:49,458 INFO L226 Difference]: Without dead ends: 2858 [2021-11-13 18:29:49,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 162 SyntacticMatches, 9 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25848 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=7825, Invalid=75407, Unknown=0, NotChecked=0, Total=83232 [2021-11-13 18:29:49,464 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 1651 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 9579 mSolverCounterSat, 1352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8626.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 10931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.88ms SdHoareTripleChecker+Time, 1352 IncrementalHoareTripleChecker+Valid, 9579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10030.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:49,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1651 Valid, 2084 Invalid, 10931 Unknown, 0 Unchecked, 41.88ms Time], IncrementalHoareTripleChecker [1352 Valid, 9579 Invalid, 0 Unknown, 0 Unchecked, 10030.72ms Time] [2021-11-13 18:29:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2021-11-13 18:29:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 1788. [2021-11-13 18:29:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 1.1454952434247343) internal successors, (2047), 1787 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:29:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2047 transitions. [2021-11-13 18:29:49,826 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2047 transitions. Word has length 112 [2021-11-13 18:29:49,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:49,827 INFO L470 AbstractCegarLoop]: Abstraction has 1788 states and 2047 transitions. [2021-11-13 18:29:49,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:29:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2047 transitions. [2021-11-13 18:29:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 18:29:49,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:49,832 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:49,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:50,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:29:50,047 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:50,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1827210523, now seen corresponding path program 5 times [2021-11-13 18:29:50,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:50,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246530051] [2021-11-13 18:29:50,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:50,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 242 proven. 258 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-13 18:29:50,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:50,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246530051] [2021-11-13 18:29:50,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246530051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:50,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122654227] [2021-11-13 18:29:50,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:29:50,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:29:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:29:50,584 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:29:50,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-13 18:29:51,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-11-13 18:29:51,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:51,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-13 18:29:51,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:51,386 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 [2021-11-13 18:29:51,457 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-13 18:29:51,457 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 [2021-11-13 18:29:51,514 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-13 18:29:51,514 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 [2021-11-13 18:29:51,590 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-13 18:29:51,591 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 [2021-11-13 18:29:51,692 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-13 18:29:51,693 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 [2021-11-13 18:29:51,874 INFO L354 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-11-13 18:29:51,874 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 85 [2021-11-13 18:29:52,155 INFO L354 Elim1Store]: treesize reduction 492, result has 12.5 percent of original size [2021-11-13 18:29:52,156 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 [2021-11-13 18:29:52,379 INFO L354 Elim1Store]: treesize reduction 638, result has 11.4 percent of original size [2021-11-13 18:29:52,380 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 [2021-11-13 18:29:52,652 INFO L354 Elim1Store]: treesize reduction 802, result has 10.5 percent of original size [2021-11-13 18:29:52,653 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 [2021-11-13 18:29:52,969 INFO L354 Elim1Store]: treesize reduction 984, result has 9.7 percent of original size [2021-11-13 18:29:52,969 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 118 treesize of output 141 [2021-11-13 18:29:53,492 INFO L354 Elim1Store]: treesize reduction 1184, result has 9.1 percent of original size [2021-11-13 18:29:53,493 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 130 treesize of output 156 [2021-11-13 18:29:58,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:29:58,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:29:58,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-13 18:29:58,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039639998] [2021-11-13 18:29:58,028 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:29:58,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 18:29:58,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:58,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 18:29:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1083, Unknown=2, NotChecked=0, Total=1190 [2021-11-13 18:29:58,030 INFO L87 Difference]: Start difference. First operand 1788 states and 2047 transitions. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:28,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:28,579 INFO L93 Difference]: Finished difference Result 2239 states and 2555 transitions. [2021-11-13 18:30:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-13 18:30:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-13 18:30:28,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:28,583 INFO L225 Difference]: With dead ends: 2239 [2021-11-13 18:30:28,583 INFO L226 Difference]: Without dead ends: 2151 [2021-11-13 18:30:28,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3045 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=1117, Invalid=8570, Unknown=15, NotChecked=0, Total=9702 [2021-11-13 18:30:28,588 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 300 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1314.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.64ms SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1572.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:28,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 673 Invalid, 2243 Unknown, 0 Unchecked, 8.64ms Time], IncrementalHoareTripleChecker [475 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1572.82ms Time] [2021-11-13 18:30:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-11-13 18:30:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1844. [2021-11-13 18:30:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 1.143787303309821) internal successors, (2108), 1843 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2108 transitions. [2021-11-13 18:30:29,006 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2108 transitions. Word has length 112 [2021-11-13 18:30:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:29,007 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2108 transitions. [2021-11-13 18:30:29,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2108 transitions. [2021-11-13 18:30:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 18:30:29,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:29,009 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:29,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-13 18:30:29,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-13 18:30:29,210 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1317737433, now seen corresponding path program 6 times [2021-11-13 18:30:29,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:29,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078311069] [2021-11-13 18:30:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:29,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 26 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:29,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:29,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078311069] [2021-11-13 18:30:29,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078311069] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:30:29,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201113323] [2021-11-13 18:30:29,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:30:29,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:29,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:30:29,753 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:30:29,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-13 18:30:30,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-13 18:30:30,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:30:30,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:30:30,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:30,574 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 [2021-11-13 18:30:30,616 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:30:30,616 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 [2021-11-13 18:30:30,731 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-13 18:30:30,731 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 [2021-11-13 18:30:30,814 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-13 18:30:30,814 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 [2021-11-13 18:30:30,914 INFO L354 Elim1Store]: treesize reduction 236, result has 15.4 percent of original size [2021-11-13 18:30:30,915 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 [2021-11-13 18:30:31,034 INFO L354 Elim1Store]: treesize reduction 343, result has 13.8 percent of original size [2021-11-13 18:30:31,034 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 [2021-11-13 18:30:31,172 INFO L354 Elim1Store]: treesize reduction 468, result has 12.5 percent of original size [2021-11-13 18:30:31,172 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 83 treesize of output 97 [2021-11-13 18:30:31,489 INFO L354 Elim1Store]: treesize reduction 611, result has 11.4 percent of original size [2021-11-13 18:30:31,490 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 [2021-11-13 18:30:31,800 INFO L354 Elim1Store]: treesize reduction 772, result has 10.5 percent of original size [2021-11-13 18:30:31,800 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 [2021-11-13 18:30:32,136 INFO L354 Elim1Store]: treesize reduction 951, result has 9.8 percent of original size [2021-11-13 18:30:32,136 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 118 treesize of output 141 [2021-11-13 18:30:32,477 INFO L354 Elim1Store]: treesize reduction 1148, result has 9.1 percent of original size [2021-11-13 18:30:32,477 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 142 treesize of output 156 [2021-11-13 18:30:32,847 INFO L354 Elim1Store]: treesize reduction 1363, result has 8.5 percent of original size [2021-11-13 18:30:32,847 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 154 treesize of output 171 [2021-11-13 18:30:33,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:30:33,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:30:33,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-11-13 18:30:33,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233253911] [2021-11-13 18:30:33,201 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:30:33,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-13 18:30:33,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-13 18:30:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1518, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 18:30:33,202 INFO L87 Difference]: Start difference. First operand 1844 states and 2108 transitions. Second operand has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:35,492 INFO L93 Difference]: Finished difference Result 2492 states and 2767 transitions. [2021-11-13 18:30:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-13 18:30:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-13 18:30:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:35,497 INFO L225 Difference]: With dead ends: 2492 [2021-11-13 18:30:35,497 INFO L226 Difference]: Without dead ends: 2482 [2021-11-13 18:30:35,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=460, Invalid=5702, Unknown=0, NotChecked=0, Total=6162 [2021-11-13 18:30:35,499 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 184 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 732.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.63ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 879.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:35,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 887 Invalid, 1750 Unknown, 0 Unchecked, 5.63ms Time], IncrementalHoareTripleChecker [85 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 879.49ms Time] [2021-11-13 18:30:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-11-13 18:30:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1865. [2021-11-13 18:30:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1864 states have (on average 1.1432403433476395) internal successors, (2131), 1864 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2131 transitions. [2021-11-13 18:30:35,832 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2131 transitions. Word has length 112 [2021-11-13 18:30:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:35,832 INFO L470 AbstractCegarLoop]: Abstraction has 1865 states and 2131 transitions. [2021-11-13 18:30:35,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.48) internal successors, (112), 25 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2131 transitions. [2021-11-13 18:30:35,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 18:30:35,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:35,836 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:35,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-13 18:30:36,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-13 18:30:36,051 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:36,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:36,051 INFO L85 PathProgramCache]: Analyzing trace with hash 428536667, now seen corresponding path program 5 times [2021-11-13 18:30:36,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:36,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716635130] [2021-11-13 18:30:36,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:36,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:36,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:36,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716635130] [2021-11-13 18:30:36,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716635130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:30:36,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646244886] [2021-11-13 18:30:36,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:30:36,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:30:36,471 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:30:36,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-13 18:30:37,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-11-13 18:30:37,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:30:37,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-13 18:30:37,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:37,091 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 [2021-11-13 18:30:37,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,132 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 [2021-11-13 18:30:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,183 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 [2021-11-13 18:30:37,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,242 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,242 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 [2021-11-13 18:30:37,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,327 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,327 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 [2021-11-13 18:30:37,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,484 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 60 treesize of output 71 [2021-11-13 18:30:37,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,566 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 72 treesize of output 86 [2021-11-13 18:30:37,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,674 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 84 treesize of output 101 [2021-11-13 18:30:37,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,812 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 96 treesize of output 116 [2021-11-13 18:30:37,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:37,955 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:30:37,956 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 108 treesize of output 131 [2021-11-13 18:30:38,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,494 INFO L354 Elim1Store]: treesize reduction 904, result has 10.3 percent of original size [2021-11-13 18:30:38,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 128 treesize of output 154 [2021-11-13 18:30:38,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:38,882 INFO L354 Elim1Store]: treesize reduction 1108, result has 9.5 percent of original size [2021-11-13 18:30:38,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 143 treesize of output 166 [2021-11-13 18:30:39,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,311 INFO L354 Elim1Store]: treesize reduction 1330, result has 8.8 percent of original size [2021-11-13 18:30:39,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 161 treesize of output 178 [2021-11-13 18:30:39,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,846 INFO L354 Elim1Store]: treesize reduction 1570, result has 8.2 percent of original size [2021-11-13 18:30:39,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 10 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 176 treesize of output 193 [2021-11-13 18:30:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:39,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:40,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:40,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:30:40,530 INFO L354 Elim1Store]: treesize reduction 1828, result has 7.7 percent of original size [2021-11-13 18:30:40,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 10 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 188 treesize of output 208 [2021-11-13 18:30:40,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:30:40,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:30:40,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-13 18:30:40,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827174648] [2021-11-13 18:30:40,940 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:30:40,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 18:30:40,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:40,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 18:30:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1575, Unknown=0, NotChecked=0, Total=1722 [2021-11-13 18:30:40,942 INFO L87 Difference]: Start difference. First operand 1865 states and 2131 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:50,830 INFO L93 Difference]: Finished difference Result 3831 states and 4284 transitions. [2021-11-13 18:30:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2021-11-13 18:30:50,831 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-13 18:30:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:50,840 INFO L225 Difference]: With dead ends: 3831 [2021-11-13 18:30:50,840 INFO L226 Difference]: Without dead ends: 3829 [2021-11-13 18:30:50,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32094 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5443, Invalid=69359, Unknown=0, NotChecked=0, Total=74802 [2021-11-13 18:30:50,856 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 405 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 4359 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2784.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.28ms SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 4359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3319.58ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:50,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 798 Invalid, 5402 Unknown, 0 Unchecked, 15.28ms Time], IncrementalHoareTripleChecker [1043 Valid, 4359 Invalid, 0 Unknown, 0 Unchecked, 3319.58ms Time] [2021-11-13 18:30:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2021-11-13 18:30:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 2322. [2021-11-13 18:30:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 1.145626884963378) internal successors, (2659), 2321 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 2659 transitions. [2021-11-13 18:30:51,479 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 2659 transitions. Word has length 112 [2021-11-13 18:30:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:51,480 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 2659 transitions. [2021-11-13 18:30:51,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 2659 transitions. [2021-11-13 18:30:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 18:30:51,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:51,484 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 11, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:51,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:51,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-13 18:30:51,685 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1884160923, now seen corresponding path program 1 times [2021-11-13 18:30:51,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:51,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216530997] [2021-11-13 18:30:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:51,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 26 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:52,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:52,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216530997] [2021-11-13 18:30:52,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216530997] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:30:52,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136684731] [2021-11-13 18:30:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:52,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:30:52,088 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:30:52,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-13 18:30:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:52,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-13 18:30:52,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:52,284 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 [2021-11-13 18:30:52,302 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 [2021-11-13 18:30:52,311 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:30:52,312 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 [2021-11-13 18:30:52,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:30:52,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:30:52,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-11-13 18:30:52,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543727769] [2021-11-13 18:30:52,418 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:30:52,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 18:30:52,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 18:30:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:30:52,419 INFO L87 Difference]: Start difference. First operand 2322 states and 2659 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:57,680 INFO L93 Difference]: Finished difference Result 3361 states and 3773 transitions. [2021-11-13 18:30:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-13 18:30:57,680 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-13 18:30:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:57,682 INFO L225 Difference]: With dead ends: 3361 [2021-11-13 18:30:57,682 INFO L226 Difference]: Without dead ends: 2381 [2021-11-13 18:30:57,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5269 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1441, Invalid=14059, Unknown=0, NotChecked=0, Total=15500 [2021-11-13 18:30:57,690 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 362 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1829.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.34ms SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2159.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:57,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 893 Invalid, 3146 Unknown, 0 Unchecked, 10.34ms Time], IncrementalHoareTripleChecker [841 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 2159.28ms Time] [2021-11-13 18:30:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-11-13 18:30:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1535. [2021-11-13 18:30:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 1.1408083441981747) internal successors, (1750), 1534 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 1750 transitions. [2021-11-13 18:30:57,936 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 1750 transitions. Word has length 112 [2021-11-13 18:30:57,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:57,936 INFO L470 AbstractCegarLoop]: Abstraction has 1535 states and 1750 transitions. [2021-11-13 18:30:57,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:30:57,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 1750 transitions. [2021-11-13 18:30:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 18:30:57,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:57,939 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 13, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:57,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:58,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:58,139 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 901816558, now seen corresponding path program 7 times [2021-11-13 18:30:58,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:58,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606110086] [2021-11-13 18:30:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:58,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:58,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:58,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606110086] [2021-11-13 18:30:58,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606110086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:30:58,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317742220] [2021-11-13 18:30:58,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:30:58,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:30:58,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:30:58,535 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:30:58,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-13 18:30:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:58,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-13 18:30:58,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:58,715 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 [2021-11-13 18:30:59,725 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-13 18:30:59,726 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 [2021-11-13 18:30:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:59,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:31:00,057 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 17 treesize of output 15 [2021-11-13 18:31:00,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 18:31:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:31:00,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317742220] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:31:00,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:31:00,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 39 [2021-11-13 18:31:00,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026849134] [2021-11-13 18:31:00,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:31:00,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-13 18:31:00,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-13 18:31:00,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2021-11-13 18:31:00,136 INFO L87 Difference]: Start difference. First operand 1535 states and 1750 transitions. Second operand has 39 states, 39 states have (on average 5.384615384615385) internal successors, (210), 39 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:34,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:34,139 INFO L93 Difference]: Finished difference Result 10433 states and 11829 transitions. [2021-11-13 18:32:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2006 states. [2021-11-13 18:32:34,139 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.384615384615385) internal successors, (210), 39 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-13 18:32:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:34,148 INFO L225 Difference]: With dead ends: 10433 [2021-11-13 18:32:34,149 INFO L226 Difference]: Without dead ends: 10431 [2021-11-13 18:32:34,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2240 GetRequests, 215 SyntacticMatches, 6 SemanticMatches, 2019 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004269 ImplicationChecksByTransitivity, 74.2s TimeCoverageRelationStatistics Valid=76069, Invalid=4006351, Unknown=0, NotChecked=0, Total=4082420 [2021-11-13 18:32:34,339 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 2923 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 21583 mSolverCounterSat, 2900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12608.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2923 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 24483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.11ms SdHoareTripleChecker+Time, 2900 IncrementalHoareTripleChecker+Valid, 21583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15208.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:34,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2923 Valid, 3202 Invalid, 24483 Unknown, 0 Unchecked, 76.11ms Time], IncrementalHoareTripleChecker [2900 Valid, 21583 Invalid, 0 Unknown, 0 Unchecked, 15208.69ms Time] [2021-11-13 18:32:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-11-13 18:32:34,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 1503. [2021-11-13 18:32:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 1.140479360852197) internal successors, (1713), 1502 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1713 transitions. [2021-11-13 18:32:34,970 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1713 transitions. Word has length 118 [2021-11-13 18:32:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:34,970 INFO L470 AbstractCegarLoop]: Abstraction has 1503 states and 1713 transitions. [2021-11-13 18:32:34,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.384615384615385) internal successors, (210), 39 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1713 transitions. [2021-11-13 18:32:34,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-13 18:32:34,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:34,973 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 12, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:34,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:35,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-13 18:32:35,174 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:35,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:35,174 INFO L85 PathProgramCache]: Analyzing trace with hash 941132652, now seen corresponding path program 2 times [2021-11-13 18:32:35,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:35,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413611687] [2021-11-13 18:32:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:35,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2021-11-13 18:32:35,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:35,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413611687] [2021-11-13 18:32:35,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413611687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:35,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:35,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:32:35,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117091329] [2021-11-13 18:32:35,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:35,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:32:35,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:32:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:32:35,204 INFO L87 Difference]: Start difference. First operand 1503 states and 1713 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:35,475 INFO L93 Difference]: Finished difference Result 1535 states and 1749 transitions. [2021-11-13 18:32:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:32:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-13 18:32:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:35,477 INFO L225 Difference]: With dead ends: 1535 [2021-11-13 18:32:35,477 INFO L226 Difference]: Without dead ends: 1040 [2021-11-13 18:32:35,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:32:35,479 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:35,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.20ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 18.22ms Time] [2021-11-13 18:32:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-11-13 18:32:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 963. [2021-11-13 18:32:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.1091476091476091) internal successors, (1067), 962 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1067 transitions. [2021-11-13 18:32:35,727 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1067 transitions. Word has length 119 [2021-11-13 18:32:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:35,727 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1067 transitions. [2021-11-13 18:32:35,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1067 transitions. [2021-11-13 18:32:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 18:32:35,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:35,729 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:35,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-13 18:32:35,730 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1962927103, now seen corresponding path program 12 times [2021-11-13 18:32:35,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:35,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073627917] [2021-11-13 18:32:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:35,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 605 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:36,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:36,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073627917] [2021-11-13 18:32:36,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073627917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:32:36,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415099647] [2021-11-13 18:32:36,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:32:36,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:36,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:32:36,601 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:32:36,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-13 18:32:37,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-11-13 18:32:37,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:32:37,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-13 18:32:37,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 690 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:39,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 690 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:39,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415099647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:32:39,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:32:39,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 24] total 69 [2021-11-13 18:32:39,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459265394] [2021-11-13 18:32:39,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:32:39,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-11-13 18:32:39,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-11-13 18:32:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=3506, Unknown=0, NotChecked=0, Total=4692 [2021-11-13 18:32:39,885 INFO L87 Difference]: Start difference. First operand 963 states and 1067 transitions. Second operand has 69 states, 69 states have (on average 5.202898550724638) internal successors, (359), 69 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:40,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:40,866 INFO L93 Difference]: Finished difference Result 1511 states and 1671 transitions. [2021-11-13 18:32:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-13 18:32:40,867 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 5.202898550724638) internal successors, (359), 69 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-13 18:32:40,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:40,868 INFO L225 Difference]: With dead ends: 1511 [2021-11-13 18:32:40,868 INFO L226 Difference]: Without dead ends: 1025 [2021-11-13 18:32:40,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1401, Invalid=4451, Unknown=0, NotChecked=0, Total=5852 [2021-11-13 18:32:40,869 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 569 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.09ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 405.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:40,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 678 Invalid, 796 Unknown, 0 Unchecked, 3.09ms Time], IncrementalHoareTripleChecker [79 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 405.44ms Time] [2021-11-13 18:32:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-11-13 18:32:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2021-11-13 18:32:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.1026156941649898) internal successors, (1096), 994 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1096 transitions. [2021-11-13 18:32:41,132 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1096 transitions. Word has length 124 [2021-11-13 18:32:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:41,133 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1096 transitions. [2021-11-13 18:32:41,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 5.202898550724638) internal successors, (359), 69 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:32:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1096 transitions. [2021-11-13 18:32:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 18:32:41,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:41,135 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:41,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-13 18:32:41,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-13 18:32:41,363 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -520949802, now seen corresponding path program 13 times [2021-11-13 18:32:41,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:41,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806184604] [2021-11-13 18:32:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:41,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 30 proven. 706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:42,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:42,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806184604] [2021-11-13 18:32:42,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806184604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:32:42,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626239068] [2021-11-13 18:32:42,140 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:32:42,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:42,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:32:42,141 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:32:42,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-13 18:32:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:42,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-13 18:32:42,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:42,451 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 [2021-11-13 18:32:42,507 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:32:42,507 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 [2021-11-13 18:32:42,525 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:32:42,525 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 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-13 18:32:42,543 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-13 18:32:42,543 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 [2021-11-13 18:32:42,559 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-13 18:32:42,559 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 [2021-11-13 18:32:43,628 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 [2021-11-13 18:32:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 30 proven. 706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:43,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:44,616 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 17 treesize of output 15 [2021-11-13 18:32:44,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-13 18:32:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 30 proven. 706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:44,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626239068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:32:44,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:32:44,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 66 [2021-11-13 18:32:44,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493271367] [2021-11-13 18:32:44,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:32:44,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:32:44,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:44,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:32:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4084, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:32:44,744 INFO L87 Difference]: Start difference. First operand 995 states and 1096 transitions. Second operand has 66 states, 66 states have (on average 5.348484848484849) internal successors, (353), 66 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:33:29,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:29,822 INFO L93 Difference]: Finished difference Result 2599 states and 2762 transitions. [2021-11-13 18:33:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 518 states. [2021-11-13 18:33:29,823 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.348484848484849) internal successors, (353), 66 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-13 18:33:29,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:29,824 INFO L225 Difference]: With dead ends: 2599 [2021-11-13 18:33:29,824 INFO L226 Difference]: Without dead ends: 2565 [2021-11-13 18:33:29,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136307 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=13133, Invalid=322687, Unknown=0, NotChecked=0, Total=335820 [2021-11-13 18:33:29,835 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 2669 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 9888 mSolverCounterSat, 2388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6434.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 12276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.18ms SdHoareTripleChecker+Time, 2388 IncrementalHoareTripleChecker+Valid, 9888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7743.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:29,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2669 Valid, 2324 Invalid, 12276 Unknown, 0 Unchecked, 35.18ms Time], IncrementalHoareTripleChecker [2388 Valid, 9888 Invalid, 0 Unknown, 0 Unchecked, 7743.27ms Time] [2021-11-13 18:33:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2021-11-13 18:33:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 1249. [2021-11-13 18:33:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.0961538461538463) internal successors, (1368), 1248 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:33:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1368 transitions. [2021-11-13 18:33:30,065 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1368 transitions. Word has length 131 [2021-11-13 18:33:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:30,065 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1368 transitions. [2021-11-13 18:33:30,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.348484848484849) internal successors, (353), 66 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:33:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1368 transitions. [2021-11-13 18:33:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 18:33:30,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:30,067 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 14, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:30,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:30,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-13 18:33:30,268 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash 750339348, now seen corresponding path program 6 times [2021-11-13 18:33:30,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:30,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765735614] [2021-11-13 18:33:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:30,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:30,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:30,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765735614] [2021-11-13 18:33:30,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765735614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:33:30,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199036749] [2021-11-13 18:33:30,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:33:30,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:30,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:30,759 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:30,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb2a5f64-012f-4404-a5ae-96e0809bc207/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-13 18:33:31,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-13 18:33:31,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:33:31,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-13 18:33:31,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:31,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 18:33:31,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:31,929 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 [2021-11-13 18:33:31,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:31,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:31,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:31,982 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:31,982 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 [2021-11-13 18:33:32,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,053 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:32,053 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 [2021-11-13 18:33:32,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:32,157 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 [2021-11-13 18:33:32,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,347 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:32,347 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 60 treesize of output 71 [2021-11-13 18:33:32,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,437 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:32,437 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 72 treesize of output 86 [2021-11-13 18:33:32,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,544 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:32,544 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 84 treesize of output 101 [2021-11-13 18:33:32,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,687 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:32,687 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 96 treesize of output 116 [2021-11-13 18:33:32,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:32,832 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:32,833 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 108 treesize of output 131 [2021-11-13 18:33:33,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,374 INFO L354 Elim1Store]: treesize reduction 904, result has 10.3 percent of original size [2021-11-13 18:33:33,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 128 treesize of output 154 [2021-11-13 18:33:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,734 INFO L354 Elim1Store]: treesize reduction 1108, result has 9.5 percent of original size [2021-11-13 18:33:33,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 140 treesize of output 169 [2021-11-13 18:33:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,167 INFO L354 Elim1Store]: treesize reduction 1330, result has 8.8 percent of original size [2021-11-13 18:33:34,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 152 treesize of output 184 [2021-11-13 18:33:34,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,776 INFO L354 Elim1Store]: treesize reduction 1570, result has 8.2 percent of original size [2021-11-13 18:33:34,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 10 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 164 treesize of output 199 [2021-11-13 18:33:34,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,423 INFO L354 Elim1Store]: treesize reduction 1828, result has 7.7 percent of original size [2021-11-13 18:33:35,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 10 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 176 treesize of output 214 [2021-11-13 18:33:35,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:35,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,500 INFO L354 Elim1Store]: treesize reduction 2104, result has 7.2 percent of original size [2021-11-13 18:33:36,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 10 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 193 treesize of output 234 [2021-11-13 18:33:36,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:36,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,454 INFO L354 Elim1Store]: treesize reduction 2398, result has 6.8 percent of original size [2021-11-13 18:33:37,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 10 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 136 case distinctions, treesize of input 214 treesize of output 246 [2021-11-13 18:33:37,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:37,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,657 INFO L354 Elim1Store]: treesize reduction 2710, result has 6.5 percent of original size [2021-11-13 18:33:38,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 10 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 153 case distinctions, treesize of input 241 treesize of output 258 [2021-11-13 18:33:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:38,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:39,899 INFO L354 Elim1Store]: treesize reduction 3040, result has 6.2 percent of original size [2021-11-13 18:33:39,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 10 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 171 case distinctions, treesize of input 259 treesize of output 273 [2021-11-13 18:33:40,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:40,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:33:41,412 INFO L354 Elim1Store]: treesize reduction 3388, result has 5.9 percent of original size [2021-11-13 18:33:41,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 10 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 271 treesize of output 288 [2021-11-13 18:33:42,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~i~0#1|] [2021-11-13 18:33:42,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:33:42,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-11-13 18:33:42,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994339790] [2021-11-13 18:33:42,201 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-13 18:33:42,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-13 18:33:42,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-13 18:33:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2341, Unknown=0, NotChecked=0, Total=2550 [2021-11-13 18:33:42,202 INFO L87 Difference]: Start difference. First operand 1249 states and 1368 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)