./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/nr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/nr5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa --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 7a05e17fa6f76d5004d5085f0b83441da7dbecb194f05c3b661e69c00b5f4df0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:44:22,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:44:22,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:44:22,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:44:22,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:44:22,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:44:22,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:44:22,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:44:22,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:44:22,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:44:22,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:44:22,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:44:22,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:44:22,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:44:22,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:44:22,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:44:22,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:44:22,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:44:22,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:44:22,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:44:22,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:44:22,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:44:22,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:44:22,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:44:22,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:44:22,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:44:22,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:44:22,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:44:22,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:44:22,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:44:22,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:44:22,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:44:22,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:44:22,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:44:22,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:44:22,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:44:22,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:44:22,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:44:22,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:44:22,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:44:22,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:44:22,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:44:22,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:44:22,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:44:22,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:44:22,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:44:22,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:44:22,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:44:22,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:44:22,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:44:22,536 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:44:22,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:44:22,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:44:22,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:44:22,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:44:22,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:44:22,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:44:22,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:44:22,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:44:22,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:44:22,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:44:22,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:44:22,540 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_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a05e17fa6f76d5004d5085f0b83441da7dbecb194f05c3b661e69c00b5f4df0 [2021-12-06 20:44:22,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:44:22,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:44:22,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:44:22,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:44:22,734 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:44:22,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-tiling/nr5.c [2021-12-06 20:44:22,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/data/5ad60abde/b9d140005e154a92b48b932218c6f7b4/FLAGecd0c88d4 [2021-12-06 20:44:23,128 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:44:23,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/sv-benchmarks/c/array-tiling/nr5.c [2021-12-06 20:44:23,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/data/5ad60abde/b9d140005e154a92b48b932218c6f7b4/FLAGecd0c88d4 [2021-12-06 20:44:23,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/data/5ad60abde/b9d140005e154a92b48b932218c6f7b4 [2021-12-06 20:44:23,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:44:23,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:44:23,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:44:23,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:44:23,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:44:23,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3767444d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23, skipping insertion in model container [2021-12-06 20:44:23,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:44:23,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:44:23,277 WARN L230 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_541f2738-9c62-490e-87f8-a9d78cab3db2/sv-benchmarks/c/array-tiling/nr5.c[394,407] [2021-12-06 20:44:23,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:44:23,294 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:44:23,308 WARN L230 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_541f2738-9c62-490e-87f8-a9d78cab3db2/sv-benchmarks/c/array-tiling/nr5.c[394,407] [2021-12-06 20:44:23,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:44:23,329 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:44:23,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23 WrapperNode [2021-12-06 20:44:23,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:44:23,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:44:23,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:44:23,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:44:23,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,361 INFO L137 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2021-12-06 20:44:23,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:44:23,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:44:23,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:44:23,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:44:23,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:44:23,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:44:23,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:44:23,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:44:23,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (1/1) ... [2021-12-06 20:44:23,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:44:23,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:44:23,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:44:23,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:44:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:44:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:44:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:44:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:44:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:44:23,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:44:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:44:23,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:44:23,500 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:44:23,501 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:44:23,614 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:44:23,620 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:44:23,621 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 20:44:23,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:44:23 BoogieIcfgContainer [2021-12-06 20:44:23,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:44:23,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:44:23,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:44:23,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:44:23,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:44:23" (1/3) ... [2021-12-06 20:44:23,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d0f0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:44:23, skipping insertion in model container [2021-12-06 20:44:23,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:44:23" (2/3) ... [2021-12-06 20:44:23,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d0f0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:44:23, skipping insertion in model container [2021-12-06 20:44:23,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:44:23" (3/3) ... [2021-12-06 20:44:23,631 INFO L111 eAbstractionObserver]: Analyzing ICFG nr5.c [2021-12-06 20:44:23,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:44:23,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:44:23,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:44:23,687 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 [2021-12-06 20:44:23,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:44:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:44:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:44:23,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:23,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:23,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2021-12-06 20:44:23,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:23,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411133637] [2021-12-06 20:44:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:23,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:23,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:23,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411133637] [2021-12-06 20:44:23,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411133637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:44:23,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:44:23,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:44:23,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620192518] [2021-12-06 20:44:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:44:23,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:44:23,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:44:23,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:44:23,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:44:23,893 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 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) [2021-12-06 20:44:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:44:23,910 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2021-12-06 20:44:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:44:23,912 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 [2021-12-06 20:44:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:44:23,920 INFO L225 Difference]: With dead ends: 45 [2021-12-06 20:44:23,920 INFO L226 Difference]: Without dead ends: 20 [2021-12-06 20:44:23,923 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 [2021-12-06 20:44:23,927 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:44:23,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:44:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-06 20:44:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-12-06 20:44:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:44:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-12-06 20:44:23,960 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2021-12-06 20:44:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:44:23,961 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-12-06 20:44:23,961 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) [2021-12-06 20:44:23,961 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-12-06 20:44:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:44:23,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:23,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:23,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:44:23,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2021-12-06 20:44:23,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:23,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846935118] [2021-12-06 20:44:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:23,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846935118] [2021-12-06 20:44:24,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846935118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:44:24,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:44:24,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:44:24,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351995970] [2021-12-06 20:44:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:44:24,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:44:24,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:44:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:44:24,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:44:24,033 INFO L87 Difference]: Start difference. First operand 20 states and 24 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) [2021-12-06 20:44:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:44:24,065 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-12-06 20:44:24,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:44:24,066 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 [2021-12-06 20:44:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:44:24,066 INFO L225 Difference]: With dead ends: 29 [2021-12-06 20:44:24,067 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 20:44:24,067 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 [2021-12-06 20:44:24,069 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:44:24,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 62 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:44:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 20:44:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-12-06 20:44:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:44:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-12-06 20:44:24,075 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-12-06 20:44:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:44:24,075 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-12-06 20:44:24,075 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) [2021-12-06 20:44:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-12-06 20:44:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 20:44:24,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:24,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:24,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:44:24,077 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:24,078 INFO L85 PathProgramCache]: Analyzing trace with hash 274152825, now seen corresponding path program 1 times [2021-12-06 20:44:24,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:24,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77084915] [2021-12-06 20:44:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:24,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77084915] [2021-12-06 20:44:24,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77084915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:44:24,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:44:24,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:44:24,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332449973] [2021-12-06 20:44:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:44:24,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:44:24,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:44:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:44:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:44:24,200 INFO L87 Difference]: Start difference. First operand 22 states and 26 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) [2021-12-06 20:44:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:44:24,236 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-12-06 20:44:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:44:24,237 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 [2021-12-06 20:44:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:44:24,238 INFO L225 Difference]: With dead ends: 38 [2021-12-06 20:44:24,238 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 20:44:24,238 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 [2021-12-06 20:44:24,240 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 58 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:44:24,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 27 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:44:24,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 20:44:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-12-06 20:44:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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) [2021-12-06 20:44:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-06 20:44:24,245 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2021-12-06 20:44:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:44:24,246 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-06 20:44:24,246 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) [2021-12-06 20:44:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-06 20:44:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 20:44:24,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:24,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:24,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:44:24,247 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:24,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash -715167033, now seen corresponding path program 1 times [2021-12-06 20:44:24,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:24,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836594204] [2021-12-06 20:44:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:24,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:24,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836594204] [2021-12-06 20:44:24,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836594204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:44:24,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:44:24,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:44:24,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870697221] [2021-12-06 20:44:24,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:44:24,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:44:24,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:44:24,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:44:24,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:44:24,283 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:44:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:44:24,299 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-12-06 20:44:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:44:24,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 20:44:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:44:24,300 INFO L225 Difference]: With dead ends: 42 [2021-12-06 20:44:24,300 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 20:44:24,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:44:24,303 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:44:24,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:44:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 20:44:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-12-06 20:44:24,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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) [2021-12-06 20:44:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-12-06 20:44:24,308 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2021-12-06 20:44:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:44:24,309 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-12-06 20:44:24,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:44:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-12-06 20:44:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 20:44:24,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:24,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:24,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:44:24,310 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1618667584, now seen corresponding path program 1 times [2021-12-06 20:44:24,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:24,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457233745] [2021-12-06 20:44:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:24,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:24,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457233745] [2021-12-06 20:44:24,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457233745] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:44:24,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094330392] [2021-12-06 20:44:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:24,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:44:24,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:44:24,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:44:24,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:44:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:24,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:44:24,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:44:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:44:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094330392] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:44:24,474 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:44:24,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-06 20:44:24,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51385074] [2021-12-06 20:44:24,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:44:24,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:44:24,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:44:24,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:44:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:44:24,476 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2021-12-06 20:44:24,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:44:24,506 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2021-12-06 20:44:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:44:24,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 20:44:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:44:24,507 INFO L225 Difference]: With dead ends: 50 [2021-12-06 20:44:24,507 INFO L226 Difference]: Without dead ends: 33 [2021-12-06 20:44:24,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:44:24,508 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:44:24,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 68 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:44:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-06 20:44:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-06 20:44:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 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) [2021-12-06 20:44:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-12-06 20:44:24,513 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 19 [2021-12-06 20:44:24,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:44:24,514 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-12-06 20:44:24,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2021-12-06 20:44:24,514 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-12-06 20:44:24,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 20:44:24,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:24,515 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:24,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:44:24,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:44:24,717 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2124634745, now seen corresponding path program 2 times [2021-12-06 20:44:24,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:24,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888062823] [2021-12-06 20:44:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:24,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:24,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888062823] [2021-12-06 20:44:24,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888062823] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:44:24,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282927263] [2021-12-06 20:44:24,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:44:24,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:44:24,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:44:24,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:44:24,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:44:24,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:44:24,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:44:24,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:44:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:44:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:24,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:44:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:25,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282927263] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:44:25,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:44:25,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2021-12-06 20:44:25,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390735367] [2021-12-06 20:44:25,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:44:25,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:44:25,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:44:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:44:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:44:25,010 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-12-06 20:44:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:44:25,035 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-12-06 20:44:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:44:25,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 28 [2021-12-06 20:44:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:44:25,036 INFO L225 Difference]: With dead ends: 62 [2021-12-06 20:44:25,036 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 20:44:25,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:44:25,037 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:44:25,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 52 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:44:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 20:44:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-06 20:44:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 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) [2021-12-06 20:44:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2021-12-06 20:44:25,042 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2021-12-06 20:44:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:44:25,043 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2021-12-06 20:44:25,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-12-06 20:44:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2021-12-06 20:44:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 20:44:25,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:25,044 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:25,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:44:25,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:44:25,246 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -233654912, now seen corresponding path program 3 times [2021-12-06 20:44:25,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:25,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496953039] [2021-12-06 20:44:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:25,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:25,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:25,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496953039] [2021-12-06 20:44:25,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496953039] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:44:25,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317421224] [2021-12-06 20:44:25,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:44:25,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:44:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:44:25,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:44:25,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:44:25,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 20:44:25,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:44:25,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:44:25,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:44:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 20:44:25,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:44:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 20:44:25,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317421224] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:44:25,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:44:25,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2021-12-06 20:44:25,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550562341] [2021-12-06 20:44:25,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:44:25,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:44:25,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:44:25,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:44:25,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:44:25,566 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:44:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:44:25,632 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2021-12-06 20:44:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:44:25,632 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 20:44:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:44:25,633 INFO L225 Difference]: With dead ends: 70 [2021-12-06 20:44:25,633 INFO L226 Difference]: Without dead ends: 41 [2021-12-06 20:44:25,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:44:25,634 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:44:25,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 59 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:44:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-06 20:44:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-12-06 20:44:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 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) [2021-12-06 20:44:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2021-12-06 20:44:25,638 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 31 [2021-12-06 20:44:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:44:25,639 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2021-12-06 20:44:25,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:44:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2021-12-06 20:44:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 20:44:25,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:44:25,640 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:44:25,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:44:25,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 20:44:25,842 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:44:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:44:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash 467409666, now seen corresponding path program 1 times [2021-12-06 20:44:25,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:44:25,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917920517] [2021-12-06 20:44:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:25,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:44:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:26,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:44:26,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917920517] [2021-12-06 20:44:26,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917920517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:44:26,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741471221] [2021-12-06 20:44:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:44:26,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:44:26,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:44:26,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:44:26,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:44:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:44:26,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 20:44:26,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:44:26,494 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 18 treesize of output 14 [2021-12-06 20:44:26,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:44:26,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:44:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:44:26,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:44:26,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:44:26,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:44:26,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:44:26,739 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 24 treesize of output 23 [2021-12-06 20:44:26,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:44:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:44:26,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:44:41,636 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_36| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_36| 1)) (forall ((v_ArrVal_92 Int) (|v_ULTIMATE.start_main_~j~0#1_35| Int) (v_ArrVal_94 Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_36| (- 4)) .cse0) v_ArrVal_92) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_35| (- 4)) .cse0) v_ArrVal_94)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) (< |v_ULTIMATE.start_main_~j~0#1_36| (+ |v_ULTIMATE.start_main_~j~0#1_35| 1)))))) is different from false [2021-12-06 20:44:51,839 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_37| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_37| 1)) (forall ((v_ArrVal_92 Int) (|v_ULTIMATE.start_main_~j~0#1_35| Int) (|v_ULTIMATE.start_main_~j~0#1_36| Int) (v_ArrVal_89 Int) (v_ArrVal_94 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_36| (+ |v_ULTIMATE.start_main_~j~0#1_35| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_37| (- 4))) v_ArrVal_89) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_36| (- 4)) .cse0) v_ArrVal_92) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_35| (- 4)) .cse0) v_ArrVal_94)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) (< |v_ULTIMATE.start_main_~j~0#1_37| (+ |v_ULTIMATE.start_main_~j~0#1_36| 1)))))) is different from false [2021-12-06 20:45:06,924 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_38| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_38| 1)) (forall ((v_ArrVal_92 Int) (|v_ULTIMATE.start_main_~j~0#1_35| Int) (|v_ULTIMATE.start_main_~j~0#1_36| Int) (|v_ULTIMATE.start_main_~j~0#1_37| Int) (v_ArrVal_88 Int) (v_ArrVal_89 Int) (v_ArrVal_94 Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_38| (- 4)) .cse0) v_ArrVal_88) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_37| (- 4))) v_ArrVal_89) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_36| (- 4)) .cse0) v_ArrVal_92) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_35| (- 4)) .cse0) v_ArrVal_94)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) (< |v_ULTIMATE.start_main_~j~0#1_38| (+ |v_ULTIMATE.start_main_~j~0#1_37| 1)) (< |v_ULTIMATE.start_main_~j~0#1_36| (+ |v_ULTIMATE.start_main_~j~0#1_35| 1)) (< |v_ULTIMATE.start_main_~j~0#1_37| (+ |v_ULTIMATE.start_main_~j~0#1_36| 1)))))) is different from false [2021-12-06 20:45:06,946 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 57 treesize of output 55 [2021-12-06 20:45:06,953 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 3440 treesize of output 3432 [2021-12-06 20:45:07,334 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 20:45:07,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:45:07,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-12-06 20:45:07,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469426988] [2021-12-06 20:45:07,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:45:07,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:45:07,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:07,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:45:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=907, Unknown=20, NotChecked=198, Total=1332 [2021-12-06 20:45:07,336 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 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) [2021-12-06 20:45:08,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:45:08,013 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-12-06 20:45:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 20:45:08,013 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 20:45:08,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:45:08,014 INFO L225 Difference]: With dead ends: 136 [2021-12-06 20:45:08,015 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 20:45:08,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=564, Invalid=2620, Unknown=20, NotChecked=336, Total=3540 [2021-12-06 20:45:08,017 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 185 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:45:08,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 90 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:45:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 20:45:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 65. [2021-12-06 20:45:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.171875) internal successors, (75), 64 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:45:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-12-06 20:45:08,029 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 31 [2021-12-06 20:45:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:45:08,029 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-12-06 20:45:08,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 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) [2021-12-06 20:45:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-12-06 20:45:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 20:45:08,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:08,031 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:45:08,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:45:08,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:45:08,232 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash 594002453, now seen corresponding path program 1 times [2021-12-06 20:45:08,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:08,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511785884] [2021-12-06 20:45:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:08,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:45:08,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511785884] [2021-12-06 20:45:08,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511785884] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:45:08,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863222465] [2021-12-06 20:45:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:08,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:45:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:45:08,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:45:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:45:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:08,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 20:45:08,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:45:08,821 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 18 treesize of output 14 [2021-12-06 20:45:08,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:45:08,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:45:08,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:45:08,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:45:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:45:08,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-06 20:45:09,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:45:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:45:09,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:45:19,263 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_126 Int) (v_ArrVal_123 Int) (|v_ULTIMATE.start_main_~j~0#1_44| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) v_ArrVal_123) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_44| (- 4))) v_ArrVal_126)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_44| 1)))) is different from false [2021-12-06 20:45:21,298 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_45| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_45| 1)) (forall ((v_ArrVal_126 Int) (v_ArrVal_123 Int) (|v_ULTIMATE.start_main_~j~0#1_44| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_45| (- 4))) v_ArrVal_123) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_44| (- 4))) v_ArrVal_126)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~j~0#1_45| (+ |v_ULTIMATE.start_main_~j~0#1_44| 1)))))) is different from false [2021-12-06 20:45:33,488 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_46| Int)) (or (forall ((v_ArrVal_126 Int) (v_ArrVal_123 Int) (v_ArrVal_121 Int) (|v_ULTIMATE.start_main_~j~0#1_44| Int) (|v_ULTIMATE.start_main_~j~0#1_45| Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_46| (+ |v_ULTIMATE.start_main_~j~0#1_45| 1)) (< |v_ULTIMATE.start_main_~j~0#1_45| (+ |v_ULTIMATE.start_main_~j~0#1_44| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_46| (- 4))) v_ArrVal_121) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_45| (- 4))) v_ArrVal_123) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_44| (- 4))) v_ArrVal_126)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_46| 1)))) is different from false [2021-12-06 20:45:33,509 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 49 treesize of output 47 [2021-12-06 20:45:33,513 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 3972 treesize of output 3940 [2021-12-06 20:45:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2021-12-06 20:45:47,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863222465] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:45:47,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:45:47,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 16] total 41 [2021-12-06 20:45:47,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976031548] [2021-12-06 20:45:47,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:45:47,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 20:45:47,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 20:45:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1163, Unknown=13, NotChecked=222, Total=1640 [2021-12-06 20:45:47,186 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:45:49,240 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 1) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (< (+ 3 (* 4 |c_ULTIMATE.start_main_~j~0#1|)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 20 |c_ULTIMATE.start_main_~i~0#1|))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~j~0#1_46| Int)) (or (forall ((v_ArrVal_126 Int) (v_ArrVal_123 Int) (v_ArrVal_121 Int) (|v_ULTIMATE.start_main_~j~0#1_44| Int) (|v_ULTIMATE.start_main_~j~0#1_45| Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_46| (+ |v_ULTIMATE.start_main_~j~0#1_45| 1)) (< |v_ULTIMATE.start_main_~j~0#1_45| (+ |v_ULTIMATE.start_main_~j~0#1_44| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_46| (- 4))) v_ArrVal_121) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_45| (- 4))) v_ArrVal_123) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_44| (- 4))) v_ArrVal_126)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_46| 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (* |c_ULTIMATE.start_main_~j~0#1| (- 4)))) |c_ULTIMATE.start_main_~j~0#1|) (<= 4 |c_ULTIMATE.start_main_~j~0#1|)) is different from false [2021-12-06 20:45:51,258 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~j~0#1_45| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_45| 1)) (forall ((v_ArrVal_126 Int) (v_ArrVal_123 Int) (|v_ULTIMATE.start_main_~j~0#1_44| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_45| (- 4))) v_ArrVal_123) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_44| (- 4))) v_ArrVal_126)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~j~0#1_45| (+ |v_ULTIMATE.start_main_~j~0#1_44| 1)))))) (<= 4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) 4)) (= |c_ULTIMATE.start_main_~i~0#1| 1) (<= |c_ULTIMATE.start_main_~j~0#1| 3) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0)) is different from false [2021-12-06 20:45:53,368 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~j~0#1_45| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_45| 1)) (forall ((v_ArrVal_126 Int) (v_ArrVal_123 Int) (|v_ULTIMATE.start_main_~j~0#1_44| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_45| (- 4))) v_ArrVal_123) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_44| (- 4))) v_ArrVal_126)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~j~0#1_45| (+ |v_ULTIMATE.start_main_~j~0#1_44| 1)))))) (<= 4 (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 16)))) (<= 4 (select .cse1 4)) (= |c_ULTIMATE.start_main_~i~0#1| 1) (<= |c_ULTIMATE.start_main_~j~0#1| 3) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (<= |c_ULTIMATE.start_main_~j~0#1| 2))) is different from false [2021-12-06 20:45:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:45:53,975 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2021-12-06 20:45:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 20:45:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 20:45:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:45:53,977 INFO L225 Difference]: With dead ends: 127 [2021-12-06 20:45:53,977 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 20:45:53,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=583, Invalid=2847, Unknown=16, NotChecked=714, Total=4160 [2021-12-06 20:45:53,979 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 230 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:45:53,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 192 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 499 Invalid, 0 Unknown, 292 Unchecked, 0.2s Time] [2021-12-06 20:45:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 20:45:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 77. [2021-12-06 20:45:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 76 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) [2021-12-06 20:45:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2021-12-06 20:45:53,991 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 37 [2021-12-06 20:45:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:45:53,991 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2021-12-06 20:45:53,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:45:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2021-12-06 20:45:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 20:45:53,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:53,992 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:45:54,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:45:54,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:45:54,194 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:54,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash 879791848, now seen corresponding path program 2 times [2021-12-06 20:45:54,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68151892] [2021-12-06 20:45:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:54,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:45:54,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:54,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68151892] [2021-12-06 20:45:54,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68151892] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:45:54,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134267169] [2021-12-06 20:45:54,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:45:54,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:45:54,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:45:54,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:45:54,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:45:54,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:45:54,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:45:54,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 20:45:54,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:45:54,628 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 18 treesize of output 14 [2021-12-06 20:45:54,683 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-12-06 20:45:54,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:45:54,727 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-06 20:45:54,727 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 [2021-12-06 20:45:54,863 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 19 treesize of output 7 [2021-12-06 20:45:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:45:54,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:46:17,072 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_156 Int) (v_ArrVal_153 Int) (|v_ULTIMATE.start_main_~j~0#1_55| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) v_ArrVal_153) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_55| (- 4))) v_ArrVal_156)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_55| 1)))) is different from false [2021-12-06 20:46:19,105 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_56| Int)) (or (forall ((v_ArrVal_156 Int) (v_ArrVal_153 Int) (|v_ULTIMATE.start_main_~j~0#1_55| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_56| (- 4))) v_ArrVal_153) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_55| (- 4))) v_ArrVal_156)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (< |v_ULTIMATE.start_main_~j~0#1_56| (+ |v_ULTIMATE.start_main_~j~0#1_55| 1)))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_56| 1)))) is different from false [2021-12-06 20:46:19,117 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 39 treesize of output 37 [2021-12-06 20:46:19,121 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 476 treesize of output 468 [2021-12-06 20:46:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2021-12-06 20:46:21,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134267169] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:46:21,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:46:21,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 16] total 45 [2021-12-06 20:46:21,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345425082] [2021-12-06 20:46:21,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:46:21,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-06 20:46:21,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-06 20:46:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1545, Unknown=13, NotChecked=166, Total=1980 [2021-12-06 20:46:21,459 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 45 states, 45 states have (on average 2.6666666666666665) internal successors, (120), 45 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:23,605 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse0 (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|)) (.cse2 (select .cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))))) (and (<= 3 |c_ULTIMATE.start_main_~j~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (<= |c_ULTIMATE.start_main_~j~0#1| 3) .cse0 (forall ((|v_ULTIMATE.start_main_~j~0#1_56| Int)) (or (forall ((v_ArrVal_156 Int) (v_ArrVal_153 Int) (|v_ULTIMATE.start_main_~j~0#1_55| Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (* |v_ULTIMATE.start_main_~j~0#1_56| (- 4))) v_ArrVal_153) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (* |v_ULTIMATE.start_main_~j~0#1_55| (- 4))) v_ArrVal_156)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (< |v_ULTIMATE.start_main_~j~0#1_56| (+ |v_ULTIMATE.start_main_~j~0#1_55| 1)))) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_56| 1)))) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse2) (or (= .cse2 0) (and .cse0 (<= 3 .cse2))) (<= 3 (select .cse3 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (* |c_ULTIMATE.start_main_~j~0#1| (- 4)))))))) is different from false [2021-12-06 20:46:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:24,690 INFO L93 Difference]: Finished difference Result 267 states and 307 transitions. [2021-12-06 20:46:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 20:46:24,691 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.6666666666666665) internal successors, (120), 45 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-12-06 20:46:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:24,692 INFO L225 Difference]: With dead ends: 267 [2021-12-06 20:46:24,692 INFO L226 Difference]: Without dead ends: 208 [2021-12-06 20:46:24,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=814, Invalid=4884, Unknown=14, NotChecked=450, Total=6162 [2021-12-06 20:46:24,695 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 471 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:24,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 241 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 697 Invalid, 0 Unknown, 319 Unchecked, 0.4s Time] [2021-12-06 20:46:24,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-06 20:46:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 116. [2021-12-06 20:46:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 115 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2021-12-06 20:46:24,704 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 43 [2021-12-06 20:46:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:24,704 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2021-12-06 20:46:24,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.6666666666666665) internal successors, (120), 45 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2021-12-06 20:46:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 20:46:24,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:24,705 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:46:24,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:46:24,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 20:46:24,907 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1886597499, now seen corresponding path program 3 times [2021-12-06 20:46:24,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:24,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849482400] [2021-12-06 20:46:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:24,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:25,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:25,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849482400] [2021-12-06 20:46:25,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849482400] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:46:25,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009517294] [2021-12-06 20:46:25,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:46:25,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:46:25,202 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:46:25,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:46:25,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 20:46:25,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:46:25,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 20:46:25,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:46:25,289 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 18 treesize of output 14 [2021-12-06 20:46:25,356 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-12-06 20:46:25,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:46:25,735 INFO L354 Elim1Store]: treesize reduction 12, result has 20.0 percent of original size [2021-12-06 20:46:25,735 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 24 treesize of output 12 [2021-12-06 20:46:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:46:25,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:46:26,008 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 30 treesize of output 28 [2021-12-06 20:46:26,012 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 234 treesize of output 226 [2021-12-06 20:46:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:46:26,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009517294] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:46:26,107 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:46:26,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 39 [2021-12-06 20:46:26,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801770043] [2021-12-06 20:46:26,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:46:26,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 20:46:26,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 20:46:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1266, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 20:46:26,108 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:27,057 INFO L93 Difference]: Finished difference Result 232 states and 258 transitions. [2021-12-06 20:46:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 20:46:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-06 20:46:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:27,059 INFO L225 Difference]: With dead ends: 232 [2021-12-06 20:46:27,059 INFO L226 Difference]: Without dead ends: 222 [2021-12-06 20:46:27,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=666, Invalid=3494, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 20:46:27,062 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 191 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:27,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 359 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 363 Invalid, 0 Unknown, 209 Unchecked, 0.2s Time] [2021-12-06 20:46:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-06 20:46:27,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 136. [2021-12-06 20:46:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.162962962962963) internal successors, (157), 135 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 157 transitions. [2021-12-06 20:46:27,076 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 157 transitions. Word has length 49 [2021-12-06 20:46:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:27,076 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 157 transitions. [2021-12-06 20:46:27,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.923076923076923) internal successors, (114), 39 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 157 transitions. [2021-12-06 20:46:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 20:46:27,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:27,077 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:46:27,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:46:27,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:27,279 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 883448270, now seen corresponding path program 4 times [2021-12-06 20:46:27,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:27,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821034111] [2021-12-06 20:46:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:27,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 18 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:27,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:27,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821034111] [2021-12-06 20:46:27,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821034111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:46:27,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771929383] [2021-12-06 20:46:27,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:46:27,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:27,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:46:27,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:46:27,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:46:27,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:46:27,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:46:27,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 20:46:27,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:46:27,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 20:46:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:27,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:46:27,769 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 19 treesize of output 17 [2021-12-06 20:46:27,771 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 [2021-12-06 20:46:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 18 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:27,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771929383] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:46:27,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:46:27,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 31 [2021-12-06 20:46:27,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765552805] [2021-12-06 20:46:27,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:46:27,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 20:46:27,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 20:46:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:46:27,948 INFO L87 Difference]: Start difference. First operand 136 states and 157 transitions. Second operand has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:29,125 INFO L93 Difference]: Finished difference Result 307 states and 344 transitions. [2021-12-06 20:46:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-12-06 20:46:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-06 20:46:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:29,127 INFO L225 Difference]: With dead ends: 307 [2021-12-06 20:46:29,127 INFO L226 Difference]: Without dead ends: 305 [2021-12-06 20:46:29,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2687 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1257, Invalid=6225, Unknown=0, NotChecked=0, Total=7482 [2021-12-06 20:46:29,130 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 361 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:29,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 269 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:46:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-06 20:46:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 164. [2021-12-06 20:46:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.147239263803681) internal successors, (187), 163 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 187 transitions. [2021-12-06 20:46:29,141 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 187 transitions. Word has length 55 [2021-12-06 20:46:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:29,141 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 187 transitions. [2021-12-06 20:46:29,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 187 transitions. [2021-12-06 20:46:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 20:46:29,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:29,142 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:46:29,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:46:29,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:29,344 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:29,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1838533479, now seen corresponding path program 5 times [2021-12-06 20:46:29,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:29,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687539666] [2021-12-06 20:46:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:29,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 20:46:29,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:29,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687539666] [2021-12-06 20:46:29,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687539666] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:46:29,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88978986] [2021-12-06 20:46:29,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 20:46:29,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:29,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:46:29,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:46:29,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 20:46:29,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-06 20:46:29,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:46:29,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:46:29,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:46:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:46:29,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:46:29,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88978986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:29,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:46:29,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2021-12-06 20:46:29,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405737102] [2021-12-06 20:46:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:29,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:46:29,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:29,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:46:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:46:29,547 INFO L87 Difference]: Start difference. First operand 164 states and 187 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:29,583 INFO L93 Difference]: Finished difference Result 272 states and 311 transitions. [2021-12-06 20:46:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:46:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-06 20:46:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:29,584 INFO L225 Difference]: With dead ends: 272 [2021-12-06 20:46:29,584 INFO L226 Difference]: Without dead ends: 133 [2021-12-06 20:46:29,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:46:29,586 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:29,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 44 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:46:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-06 20:46:29,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2021-12-06 20:46:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.1181102362204725) internal successors, (142), 127 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-12-06 20:46:29,593 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 55 [2021-12-06 20:46:29,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:29,594 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-12-06 20:46:29,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-12-06 20:46:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 20:46:29,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:29,594 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:46:29,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 20:46:29,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:29,796 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1560590305, now seen corresponding path program 6 times [2021-12-06 20:46:29,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:29,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083424285] [2021-12-06 20:46:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:29,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 20:46:30,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:30,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083424285] [2021-12-06 20:46:30,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083424285] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:46:30,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430140535] [2021-12-06 20:46:30,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 20:46:30,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:30,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:46:30,046 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:46:30,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 20:46:30,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 20:46:30,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:46:30,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 20:46:30,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:46:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 93 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:46:30,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:46:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 80 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:46:30,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430140535] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:46:30,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:46:30,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 38 [2021-12-06 20:46:30,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453483814] [2021-12-06 20:46:30,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:46:30,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 20:46:30,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 20:46:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 20:46:30,825 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:31,115 INFO L93 Difference]: Finished difference Result 149 states and 165 transitions. [2021-12-06 20:46:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:46:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-06 20:46:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:31,116 INFO L225 Difference]: With dead ends: 149 [2021-12-06 20:46:31,116 INFO L226 Difference]: Without dead ends: 107 [2021-12-06 20:46:31,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=592, Invalid=1760, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 20:46:31,118 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 316 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:31,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 208 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:46:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-06 20:46:31,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-06 20:46:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-12-06 20:46:31,124 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 61 [2021-12-06 20:46:31,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:31,125 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-12-06 20:46:31,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:46:31,125 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-12-06 20:46:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 20:46:31,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:31,125 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 8, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:46:31,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 20:46:31,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 20:46:31,326 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:31,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1885191812, now seen corresponding path program 7 times [2021-12-06 20:46:31,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:31,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732929693] [2021-12-06 20:46:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:31,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 9 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:31,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:31,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732929693] [2021-12-06 20:46:31,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732929693] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:46:31,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244426148] [2021-12-06 20:46:31,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 20:46:31,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:31,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:46:31,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:46:31,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_541f2738-9c62-490e-87f8-a9d78cab3db2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 20:46:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 20:46:31,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:46:32,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-12-06 20:46:32,162 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-12-06 20:46:32,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 20:46:32,250 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-12-06 20:46:32,250 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 28 treesize of output 27 [2021-12-06 20:46:32,296 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-12-06 20:46:32,296 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 28 treesize of output 27 [2021-12-06 20:46:32,340 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-12-06 20:46:32,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 20:46:32,383 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-12-06 20:46:32,384 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 28 treesize of output 27 [2021-12-06 20:46:32,426 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-12-06 20:46:32,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 20:46:32,615 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 19 treesize of output 7 [2021-12-06 20:46:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 32 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:32,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:46:55,723 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_103| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4))) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))))))) is different from false [2021-12-06 20:47:11,976 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_104| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_104| 1)) (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (v_ArrVal_320 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int) (|v_ULTIMATE.start_main_~j~0#1_103| Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_104| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_104| (- 4))) v_ArrVal_320) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4))) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))))))) is different from false [2021-12-06 20:47:14,051 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (v_ArrVal_320 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int) (|v_ULTIMATE.start_main_~j~0#1_104| Int) (|v_ULTIMATE.start_main_~j~0#1_103| Int) (v_ArrVal_318 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_104| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_104| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) v_ArrVal_318) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_104| (- 4))) v_ArrVal_320) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4))) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)))) is different from false [2021-12-06 20:47:16,240 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_105| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_105| 1)) (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (v_ArrVal_320 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int) (|v_ULTIMATE.start_main_~j~0#1_104| Int) (|v_ULTIMATE.start_main_~j~0#1_103| Int) (v_ArrVal_318 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_104| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (< |v_ULTIMATE.start_main_~j~0#1_105| (+ |v_ULTIMATE.start_main_~j~0#1_104| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_105| (- 4))) v_ArrVal_318) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_104| (- 4))) v_ArrVal_320) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4))) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)))))) is different from false [2021-12-06 20:47:18,342 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (v_ArrVal_320 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int) (|v_ULTIMATE.start_main_~j~0#1_104| Int) (|v_ULTIMATE.start_main_~j~0#1_103| Int) (|v_ULTIMATE.start_main_~j~0#1_105| Int) (v_ArrVal_318 Int) (v_ArrVal_315 Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) v_ArrVal_315) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_105| (- 4))) v_ArrVal_318) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_104| (- 4))) v_ArrVal_320) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4))) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (< |v_ULTIMATE.start_main_~j~0#1_104| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (< |v_ULTIMATE.start_main_~j~0#1_105| (+ |v_ULTIMATE.start_main_~j~0#1_104| 1)) (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_105| 1)) (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)))) is different from false [2021-12-06 20:47:20,588 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_106| Int)) (or (< 5 |v_ULTIMATE.start_main_~j~0#1_106|) (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (v_ArrVal_320 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int) (|v_ULTIMATE.start_main_~j~0#1_104| Int) (|v_ULTIMATE.start_main_~j~0#1_103| Int) (|v_ULTIMATE.start_main_~j~0#1_105| Int) (v_ArrVal_318 Int) (v_ArrVal_315 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_104| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (< |v_ULTIMATE.start_main_~j~0#1_105| (+ |v_ULTIMATE.start_main_~j~0#1_104| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_106| (- 4))) v_ArrVal_315) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_105| (- 4))) v_ArrVal_318) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_104| (- 4))) v_ArrVal_320) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4))) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (< |v_ULTIMATE.start_main_~j~0#1_106| (+ |v_ULTIMATE.start_main_~j~0#1_105| 1)) (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)))))) is different from false [2021-12-06 20:47:45,834 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_313 Int) (|v_ULTIMATE.start_main_~j~0#1_106| Int) (|v_ULTIMATE.start_main_~i~0#1_84| Int)) (or (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (v_ArrVal_320 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int) (|v_ULTIMATE.start_main_~j~0#1_104| Int) (|v_ULTIMATE.start_main_~j~0#1_103| Int) (|v_ULTIMATE.start_main_~j~0#1_105| Int) (v_ArrVal_318 Int) (v_ArrVal_315 Int)) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_84| 20))) (store (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (* |c_ULTIMATE.start_main_~j~0#1| (- 4))) v_ArrVal_313) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_106| (- 4)) .cse0) v_ArrVal_315) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_105| (- 4))) v_ArrVal_318) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_104| (- 4))) v_ArrVal_320) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4)) .cse0) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (< |v_ULTIMATE.start_main_~j~0#1_104| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (< |v_ULTIMATE.start_main_~j~0#1_105| (+ |v_ULTIMATE.start_main_~j~0#1_104| 1)) (< |v_ULTIMATE.start_main_~j~0#1_106| (+ |v_ULTIMATE.start_main_~j~0#1_105| 1)) (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)))) (< 5 |v_ULTIMATE.start_main_~j~0#1_106|) (< |v_ULTIMATE.start_main_~i~0#1_84| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-06 20:47:48,398 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_108| Int)) (or (< |c_ULTIMATE.start_main_~j~0#1| (+ |v_ULTIMATE.start_main_~j~0#1_108| 1)) (forall ((v_ArrVal_313 Int) (|v_ULTIMATE.start_main_~j~0#1_106| Int) (|v_ULTIMATE.start_main_~i~0#1_84| Int)) (or (< 5 |v_ULTIMATE.start_main_~j~0#1_106|) (forall ((v_ArrVal_323 Int) (v_ArrVal_322 Int) (v_ArrVal_320 Int) (|v_ULTIMATE.start_main_~j~0#1_102| Int) (|v_ULTIMATE.start_main_~j~0#1_104| Int) (|v_ULTIMATE.start_main_~j~0#1_103| Int) (|v_ULTIMATE.start_main_~j~0#1_105| Int) (v_ArrVal_318 Int) (v_ArrVal_315 Int)) (or (< |v_ULTIMATE.start_main_~j~0#1_104| (+ |v_ULTIMATE.start_main_~j~0#1_103| 1)) (< |v_ULTIMATE.start_main_~j~0#1_105| (+ |v_ULTIMATE.start_main_~j~0#1_104| 1)) (< |v_ULTIMATE.start_main_~j~0#1_106| (+ |v_ULTIMATE.start_main_~j~0#1_105| 1)) (< |v_ULTIMATE.start_main_~j~0#1_103| (+ |v_ULTIMATE.start_main_~j~0#1_102| 1)) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| (select (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_84| 20))) (store (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* |v_ULTIMATE.start_main_~j~0#1_108| (- 4)) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20)) v_ArrVal_313) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_106| (- 4)) .cse0) v_ArrVal_315) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_105| (- 4))) v_ArrVal_318) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (* |v_ULTIMATE.start_main_~j~0#1_104| (- 4))) v_ArrVal_320) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_103| (- 4)) .cse0) v_ArrVal_322) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_102| (- 4)) .cse0) v_ArrVal_323)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))))) (< |v_ULTIMATE.start_main_~i~0#1_84| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))))) is different from false [2021-12-06 20:47:48,441 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 79 treesize of output 77 [2021-12-06 20:47:48,465 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 4067300 treesize of output 4063204 [2021-12-06 20:47:57,919 WARN L227 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 2483 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:48:32,029 WARN L227 SmtUtils]: Spent 16.09s on a formula simplification. DAG size of input: 1767 DAG size of output: 1767 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:48:50,119 WARN L227 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 913 DAG size of output: 913 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:49:14,011 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 657 DAG size of output: 657 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:49:22,163 WARN L227 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 655 DAG size of output: 655 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:49:35,723 WARN L227 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 556 DAG size of output: 556 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 20:49:50,218 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 556 DAG size of output: 556 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)