./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU --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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:21:09,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:21:09,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:21:09,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:21:09,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:21:09,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:21:09,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:21:09,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:21:09,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:21:09,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:21:09,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:21:09,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:21:09,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:21:09,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:21:09,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:21:09,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:21:09,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:21:09,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:21:09,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:21:09,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:21:09,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:21:09,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:21:09,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:21:09,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:21:09,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:21:09,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:21:09,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:21:09,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:21:09,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:21:09,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:21:09,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:21:09,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:21:09,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:21:09,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:21:09,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:21:09,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:21:09,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:21:09,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:21:09,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:21:09,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:21:09,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:21:09,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:21:09,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:21:09,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:21:09,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:21:09,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:21:09,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:21:09,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:21:09,467 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:21:09,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:21:09,467 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:21:09,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:21:09,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:21:09,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:21:09,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:21:09,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:21:09,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:21:09,470 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:21:09,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:21:09,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:21:09,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:21:09,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:21:09,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:21:09,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:21:09,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:21:09,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:21:09,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:21:09,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:21:09,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:21:09,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:21:09,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:21:09,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:21:09,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:21:09,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:21:09,474 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_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2021-11-02 22:21:09,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:21:09,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:21:09,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:21:09,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:21:09,815 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:21:09,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-11-02 22:21:09,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/data/6f8519ea6/552a4a3e60774e29b8c7d24cf1c29880/FLAG925b72759 [2021-11-02 22:21:10,590 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:21:10,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-11-02 22:21:10,613 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/data/6f8519ea6/552a4a3e60774e29b8c7d24cf1c29880/FLAG925b72759 [2021-11-02 22:21:10,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/data/6f8519ea6/552a4a3e60774e29b8c7d24cf1c29880 [2021-11-02 22:21:10,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:21:10,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:21:10,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:21:10,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:21:10,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:21:10,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:21:10" (1/1) ... [2021-11-02 22:21:10,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21beb9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:10, skipping insertion in model container [2021-11-02 22:21:10,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:21:10" (1/1) ... [2021-11-02 22:21:10,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:21:10,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:21:11,373 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-11-02 22:21:11,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:21:11,418 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:21:11,456 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-11-02 22:21:11,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:21:11,527 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:21:11,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11 WrapperNode [2021-11-02 22:21:11,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:21:11,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:21:11,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:21:11,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:21:11,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:21:11,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:21:11,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:21:11,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:21:11,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:21:11,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:21:11,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:21:11,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:21:11,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (1/1) ... [2021-11-02 22:21:11,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:21:11,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:21:11,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:21:11,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:21:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:21:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:21:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:21:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:21:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:21:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:21:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:21:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:21:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:21:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:21:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:21:12,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:21:12,662 INFO L299 CfgBuilder]: Removed 178 assume(true) statements. [2021-11-02 22:21:12,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:21:12 BoogieIcfgContainer [2021-11-02 22:21:12,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:21:12,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:21:12,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:21:12,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:21:12,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:21:10" (1/3) ... [2021-11-02 22:21:12,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5593d2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:21:12, skipping insertion in model container [2021-11-02 22:21:12,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:21:11" (2/3) ... [2021-11-02 22:21:12,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5593d2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:21:12, skipping insertion in model container [2021-11-02 22:21:12,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:21:12" (3/3) ... [2021-11-02 22:21:12,683 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2021-11-02 22:21:12,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:21:12,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-11-02 22:21:12,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:21:12,741 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:21:12,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-11-02 22:21:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 164 states have (on average 1.9268292682926829) internal successors, (316), 198 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:21:12,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:12,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:21:12,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:12,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:12,775 INFO L85 PathProgramCache]: Analyzing trace with hash 890522695, now seen corresponding path program 1 times [2021-11-02 22:21:12,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:12,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569846010] [2021-11-02 22:21:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:12,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:12,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:12,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569846010] [2021-11-02 22:21:12,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569846010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:12,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:12,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:21:12,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173124701] [2021-11-02 22:21:12,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:21:12,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:21:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:21:12,956 INFO L87 Difference]: Start difference. First operand has 199 states, 164 states have (on average 1.9268292682926829) internal successors, (316), 198 states have internal predecessors, (316), 0 states have call successors, (0), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:12,991 INFO L93 Difference]: Finished difference Result 388 states and 622 transitions. [2021-11-02 22:21:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:21:12,993 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-02 22:21:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:13,003 INFO L225 Difference]: With dead ends: 388 [2021-11-02 22:21:13,004 INFO L226 Difference]: Without dead ends: 183 [2021-11-02 22:21:13,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:21:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-02 22:21:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-02 22:21:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 153 states have (on average 1.2287581699346406) internal successors, (188), 182 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 188 transitions. [2021-11-02 22:21:13,052 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 188 transitions. Word has length 6 [2021-11-02 22:21:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:13,053 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 188 transitions. [2021-11-02 22:21:13,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 188 transitions. [2021-11-02 22:21:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:21:13,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:13,055 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:13,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:21:13,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:13,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash 688572440, now seen corresponding path program 1 times [2021-11-02 22:21:13,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:13,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496398752] [2021-11-02 22:21:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:13,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:13,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:13,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496398752] [2021-11-02 22:21:13,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496398752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:13,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:13,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:21:13,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363438302] [2021-11-02 22:21:13,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:21:13,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:21:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:21:13,259 INFO L87 Difference]: Start difference. First operand 183 states and 188 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:13,459 INFO L93 Difference]: Finished difference Result 183 states and 188 transitions. [2021-11-02 22:21:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:21:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-02 22:21:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:13,462 INFO L225 Difference]: With dead ends: 183 [2021-11-02 22:21:13,462 INFO L226 Difference]: Without dead ends: 179 [2021-11-02 22:21:13,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:21:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-02 22:21:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-02 22:21:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 151 states have (on average 1.218543046357616) internal successors, (184), 178 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 184 transitions. [2021-11-02 22:21:13,493 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 184 transitions. Word has length 14 [2021-11-02 22:21:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:13,494 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 184 transitions. [2021-11-02 22:21:13,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:13,494 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 184 transitions. [2021-11-02 22:21:13,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:21:13,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:13,495 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:13,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:21:13,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:13,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash 503596455, now seen corresponding path program 1 times [2021-11-02 22:21:13,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:13,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634456124] [2021-11-02 22:21:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:13,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:13,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:13,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634456124] [2021-11-02 22:21:13,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634456124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:13,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:13,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:21:13,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719450741] [2021-11-02 22:21:13,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:21:13,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:21:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:21:13,734 INFO L87 Difference]: Start difference. First operand 179 states and 184 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:14,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:14,571 INFO L93 Difference]: Finished difference Result 269 states and 277 transitions. [2021-11-02 22:21:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:21:14,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-02 22:21:14,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:14,575 INFO L225 Difference]: With dead ends: 269 [2021-11-02 22:21:14,575 INFO L226 Difference]: Without dead ends: 265 [2021-11-02 22:21:14,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:21:14,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-02 22:21:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 192. [2021-11-02 22:21:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 165 states have (on average 1.2121212121212122) internal successors, (200), 191 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 200 transitions. [2021-11-02 22:21:14,623 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 200 transitions. Word has length 17 [2021-11-02 22:21:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:14,624 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 200 transitions. [2021-11-02 22:21:14,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 200 transitions. [2021-11-02 22:21:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 22:21:14,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:14,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:14,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:21:14,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash 327087948, now seen corresponding path program 1 times [2021-11-02 22:21:14,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:14,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020772318] [2021-11-02 22:21:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:14,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:15,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:15,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020772318] [2021-11-02 22:21:15,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020772318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:15,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:15,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:21:15,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95731118] [2021-11-02 22:21:15,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:21:15,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:21:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:21:15,016 INFO L87 Difference]: Start difference. First operand 192 states and 200 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:15,651 INFO L93 Difference]: Finished difference Result 366 states and 379 transitions. [2021-11-02 22:21:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:21:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-02 22:21:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:15,654 INFO L225 Difference]: With dead ends: 366 [2021-11-02 22:21:15,654 INFO L226 Difference]: Without dead ends: 362 [2021-11-02 22:21:15,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:21:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-02 22:21:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 270. [2021-11-02 22:21:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 243 states have (on average 1.213991769547325) internal successors, (295), 269 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2021-11-02 22:21:15,704 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 20 [2021-11-02 22:21:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:15,705 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2021-11-02 22:21:15,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2021-11-02 22:21:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 22:21:15,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:15,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:15,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:21:15,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -997855815, now seen corresponding path program 1 times [2021-11-02 22:21:15,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:15,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632907203] [2021-11-02 22:21:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:15,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:15,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:15,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632907203] [2021-11-02 22:21:15,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632907203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:15,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:15,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:21:15,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030887623] [2021-11-02 22:21:15,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:21:15,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:21:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:21:15,940 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:16,715 INFO L93 Difference]: Finished difference Result 362 states and 375 transitions. [2021-11-02 22:21:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:21:16,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-02 22:21:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:16,718 INFO L225 Difference]: With dead ends: 362 [2021-11-02 22:21:16,719 INFO L226 Difference]: Without dead ends: 358 [2021-11-02 22:21:16,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:21:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-02 22:21:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 273. [2021-11-02 22:21:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 246 states have (on average 1.2073170731707317) internal successors, (297), 272 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:16,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 297 transitions. [2021-11-02 22:21:16,747 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 297 transitions. Word has length 23 [2021-11-02 22:21:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:16,748 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 297 transitions. [2021-11-02 22:21:16,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 297 transitions. [2021-11-02 22:21:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 22:21:16,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:16,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:16,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:21:16,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1648026365, now seen corresponding path program 1 times [2021-11-02 22:21:16,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:16,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867689822] [2021-11-02 22:21:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:16,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:17,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:17,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867689822] [2021-11-02 22:21:17,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867689822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:17,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:17,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:21:17,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994317350] [2021-11-02 22:21:17,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:21:17,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:17,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:21:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:21:17,164 INFO L87 Difference]: Start difference. First operand 273 states and 297 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:18,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:18,542 INFO L93 Difference]: Finished difference Result 358 states and 371 transitions. [2021-11-02 22:21:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:21:18,542 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-02 22:21:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:18,544 INFO L225 Difference]: With dead ends: 358 [2021-11-02 22:21:18,544 INFO L226 Difference]: Without dead ends: 354 [2021-11-02 22:21:18,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:21:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-02 22:21:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 276. [2021-11-02 22:21:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 249 states have (on average 1.2008032128514057) internal successors, (299), 275 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 299 transitions. [2021-11-02 22:21:18,560 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 299 transitions. Word has length 26 [2021-11-02 22:21:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:18,561 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 299 transitions. [2021-11-02 22:21:18,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 299 transitions. [2021-11-02 22:21:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 22:21:18,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:18,562 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:21:18,563 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash -576356595, now seen corresponding path program 1 times [2021-11-02 22:21:18,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:18,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694624907] [2021-11-02 22:21:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:18,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:18,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:18,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694624907] [2021-11-02 22:21:18,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694624907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:18,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:18,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:21:18,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656414006] [2021-11-02 22:21:18,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:21:18,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:21:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:21:18,900 INFO L87 Difference]: Start difference. First operand 276 states and 299 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:20,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:20,032 INFO L93 Difference]: Finished difference Result 354 states and 367 transitions. [2021-11-02 22:21:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:21:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-02 22:21:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:20,035 INFO L225 Difference]: With dead ends: 354 [2021-11-02 22:21:20,035 INFO L226 Difference]: Without dead ends: 350 [2021-11-02 22:21:20,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:21:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-02 22:21:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 279. [2021-11-02 22:21:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 1.1944444444444444) internal successors, (301), 278 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 301 transitions. [2021-11-02 22:21:20,057 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 301 transitions. Word has length 29 [2021-11-02 22:21:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:20,059 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 301 transitions. [2021-11-02 22:21:20,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 301 transitions. [2021-11-02 22:21:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 22:21:20,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:20,063 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:20,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:21:20,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:20,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash 49558493, now seen corresponding path program 1 times [2021-11-02 22:21:20,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:20,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736998111] [2021-11-02 22:21:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:20,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:20,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:20,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736998111] [2021-11-02 22:21:20,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736998111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:20,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946236858] [2021-11-02 22:21:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:20,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:20,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:21:20,524 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:21:20,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:21:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-02 22:21:20,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:21:21,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:21,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:21,440 INFO L354 Elim1Store]: treesize reduction 343, result has 13.6 percent of original size [2021-11-02 22:21:21,440 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 230 treesize of output 92 [2021-11-02 22:21:21,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:21,476 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 88 treesize of output 80 [2021-11-02 22:21:21,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:21,816 INFO L354 Elim1Store]: treesize reduction 338, result has 19.1 percent of original size [2021-11-02 22:21:21,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 107 [2021-11-02 22:21:25,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_gl_insert_~node~1.base] [2021-11-02 22:21:25,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:21:25,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-02 22:21:25,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217106495] [2021-11-02 22:21:25,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:21:25,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:21:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:21:25,784 INFO L87 Difference]: Start difference. First operand 279 states and 301 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:27,195 INFO L93 Difference]: Finished difference Result 349 states and 371 transitions. [2021-11-02 22:21:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:21:27,196 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-02 22:21:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:27,198 INFO L225 Difference]: With dead ends: 349 [2021-11-02 22:21:27,198 INFO L226 Difference]: Without dead ends: 345 [2021-11-02 22:21:27,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:21:27,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-02 22:21:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 280. [2021-11-02 22:21:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 254 states have (on average 1.188976377952756) internal successors, (302), 279 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 302 transitions. [2021-11-02 22:21:27,214 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 302 transitions. Word has length 29 [2021-11-02 22:21:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:27,215 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 302 transitions. [2021-11-02 22:21:27,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 302 transitions. [2021-11-02 22:21:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 22:21:27,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:27,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:27,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:21:27,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:27,432 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:27,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1045868277, now seen corresponding path program 1 times [2021-11-02 22:21:27,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:27,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628137094] [2021-11-02 22:21:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:27,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:27,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:27,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628137094] [2021-11-02 22:21:27,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628137094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:27,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:27,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:21:27,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173872912] [2021-11-02 22:21:27,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:21:27,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:21:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:21:27,723 INFO L87 Difference]: Start difference. First operand 280 states and 302 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) 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) [2021-11-02 22:21:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:28,588 INFO L93 Difference]: Finished difference Result 351 states and 364 transitions. [2021-11-02 22:21:28,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:21:28,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) 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 32 [2021-11-02 22:21:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:28,591 INFO L225 Difference]: With dead ends: 351 [2021-11-02 22:21:28,592 INFO L226 Difference]: Without dead ends: 347 [2021-11-02 22:21:28,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:21:28,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-02 22:21:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 283. [2021-11-02 22:21:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 257 states have (on average 1.1828793774319066) internal successors, (304), 282 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 304 transitions. [2021-11-02 22:21:28,613 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 304 transitions. Word has length 32 [2021-11-02 22:21:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:28,614 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 304 transitions. [2021-11-02 22:21:28,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) 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) [2021-11-02 22:21:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 304 transitions. [2021-11-02 22:21:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 22:21:28,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:28,616 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:28,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:21:28,616 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1065804920, now seen corresponding path program 1 times [2021-11-02 22:21:28,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:28,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714977102] [2021-11-02 22:21:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:28,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:28,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:28,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714977102] [2021-11-02 22:21:28,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714977102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:28,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231927446] [2021-11-02 22:21:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:28,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:28,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:21:28,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:21:28,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:21:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:29,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-02 22:21:29,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:21:29,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:29,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:29,640 INFO L354 Elim1Store]: treesize reduction 263, result has 12.3 percent of original size [2021-11-02 22:21:29,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 81 [2021-11-02 22:21:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:29,652 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 64 treesize of output 56 [2021-11-02 22:21:29,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:29,875 INFO L354 Elim1Store]: treesize reduction 314, result has 16.9 percent of original size [2021-11-02 22:21:29,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 95 treesize of output 95 [2021-11-02 22:21:30,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_gl_insert_~node~1.offset] [2021-11-02 22:21:30,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:21:30,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-02 22:21:30,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905957431] [2021-11-02 22:21:30,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:21:30,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:21:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:21:30,100 INFO L87 Difference]: Start difference. First operand 283 states and 304 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:31,247 INFO L93 Difference]: Finished difference Result 348 states and 369 transitions. [2021-11-02 22:21:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:21:31,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 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 32 [2021-11-02 22:21:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:31,251 INFO L225 Difference]: With dead ends: 348 [2021-11-02 22:21:31,252 INFO L226 Difference]: Without dead ends: 344 [2021-11-02 22:21:31,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:21:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-02 22:21:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 284. [2021-11-02 22:21:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 259 states have (on average 1.1776061776061777) internal successors, (305), 283 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 305 transitions. [2021-11-02 22:21:31,269 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 305 transitions. Word has length 32 [2021-11-02 22:21:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:31,269 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 305 transitions. [2021-11-02 22:21:31,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:31,270 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 305 transitions. [2021-11-02 22:21:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 22:21:31,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:31,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:31,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:21:31,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:31,492 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1775038180, now seen corresponding path program 1 times [2021-11-02 22:21:31,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:31,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164435495] [2021-11-02 22:21:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:31,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:31,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:31,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164435495] [2021-11-02 22:21:31,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164435495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:31,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:31,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:21:31,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683043658] [2021-11-02 22:21:31,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:21:31,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:21:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:21:31,716 INFO L87 Difference]: Start difference. First operand 284 states and 305 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:33,009 INFO L93 Difference]: Finished difference Result 348 states and 361 transitions. [2021-11-02 22:21:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:21:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-02 22:21:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:33,012 INFO L225 Difference]: With dead ends: 348 [2021-11-02 22:21:33,012 INFO L226 Difference]: Without dead ends: 344 [2021-11-02 22:21:33,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:21:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-02 22:21:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 287. [2021-11-02 22:21:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 262 states have (on average 1.1717557251908397) internal successors, (307), 286 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 307 transitions. [2021-11-02 22:21:33,030 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 307 transitions. Word has length 35 [2021-11-02 22:21:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:33,030 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 307 transitions. [2021-11-02 22:21:33,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 307 transitions. [2021-11-02 22:21:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 22:21:33,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:33,032 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:33,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:21:33,032 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:33,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1304750292, now seen corresponding path program 1 times [2021-11-02 22:21:33,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:33,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214196005] [2021-11-02 22:21:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:33,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:33,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:33,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214196005] [2021-11-02 22:21:33,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214196005] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:33,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89747592] [2021-11-02 22:21:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:33,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:21:33,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:21:33,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:21:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:34,178 WARN L261 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-02 22:21:34,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:21:34,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:21:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,446 INFO L354 Elim1Store]: treesize reduction 209, result has 9.1 percent of original size [2021-11-02 22:21:34,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 378 treesize of output 189 [2021-11-02 22:21:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:34,490 INFO L354 Elim1Store]: treesize reduction 213, result has 9.7 percent of original size [2021-11-02 22:21:34,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 279 treesize of output 98 [2021-11-02 22:21:34,754 INFO L354 Elim1Store]: treesize reduction 510, result has 9.3 percent of original size [2021-11-02 22:21:34,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 250 treesize of output 191 [2021-11-02 22:21:34,837 INFO L354 Elim1Store]: treesize reduction 354, result has 12.4 percent of original size [2021-11-02 22:21:34,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 10 new quantified variables, introduced 11 case distinctions, treesize of input 250 treesize of output 204 [2021-11-02 22:21:35,271 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-02 22:21:35,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-02 22:21:35,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:35,736 INFO L354 Elim1Store]: treesize reduction 440, result has 9.3 percent of original size [2021-11-02 22:21:35,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 522 treesize of output 274 [2021-11-02 22:21:35,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:35,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:35,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:35,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:35,848 INFO L354 Elim1Store]: treesize reduction 564, result has 12.6 percent of original size [2021-11-02 22:21:35,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 432 treesize of output 257 [2021-11-02 22:21:36,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:36,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:36,355 INFO L354 Elim1Store]: treesize reduction 996, result has 7.6 percent of original size [2021-11-02 22:21:36,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 37 case distinctions, treesize of input 417 treesize of output 242 [2021-11-02 22:21:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:36,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:21:36,591 INFO L354 Elim1Store]: treesize reduction 1312, result has 8.5 percent of original size [2021-11-02 22:21:36,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 37 case distinctions, treesize of input 385 treesize of output 377 [2021-11-02 22:21:38,227 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-02 22:21:38,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 291 treesize of output 121 [2021-11-02 22:21:38,615 INFO L354 Elim1Store]: treesize reduction 145, result has 5.2 percent of original size [2021-11-02 22:21:38,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 95 treesize of output 54 [2021-11-02 22:21:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:38,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89747592] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:38,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:21:38,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-02 22:21:38,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125538052] [2021-11-02 22:21:38,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:21:38,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:21:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:21:38,664 INFO L87 Difference]: Start difference. First operand 287 states and 307 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:42,276 INFO L93 Difference]: Finished difference Result 507 states and 525 transitions. [2021-11-02 22:21:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:21:42,276 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-02 22:21:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:42,280 INFO L225 Difference]: With dead ends: 507 [2021-11-02 22:21:42,280 INFO L226 Difference]: Without dead ends: 503 [2021-11-02 22:21:42,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:21:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-11-02 22:21:42,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 371. [2021-11-02 22:21:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 346 states have (on average 1.1734104046242775) internal successors, (406), 370 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:42,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 406 transitions. [2021-11-02 22:21:42,310 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 406 transitions. Word has length 35 [2021-11-02 22:21:42,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:42,310 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 406 transitions. [2021-11-02 22:21:42,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 406 transitions. [2021-11-02 22:21:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:21:42,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:42,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:42,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 22:21:42,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:21:42,528 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:42,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash 531055145, now seen corresponding path program 1 times [2021-11-02 22:21:42,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:42,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686809093] [2021-11-02 22:21:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:42,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:42,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:42,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686809093] [2021-11-02 22:21:42,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686809093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:42,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:42,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:21:42,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894170183] [2021-11-02 22:21:42,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:21:42,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:21:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:21:42,831 INFO L87 Difference]: Start difference. First operand 371 states and 406 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:44,693 INFO L93 Difference]: Finished difference Result 425 states and 453 transitions. [2021-11-02 22:21:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:21:44,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-02 22:21:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:44,697 INFO L225 Difference]: With dead ends: 425 [2021-11-02 22:21:44,697 INFO L226 Difference]: Without dead ends: 421 [2021-11-02 22:21:44,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:21:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-02 22:21:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 374. [2021-11-02 22:21:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 349 states have (on average 1.169054441260745) internal successors, (408), 373 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 408 transitions. [2021-11-02 22:21:44,724 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 408 transitions. Word has length 38 [2021-11-02 22:21:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:44,724 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 408 transitions. [2021-11-02 22:21:44,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 408 transitions. [2021-11-02 22:21:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:21:44,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:44,726 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:44,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:21:44,726 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash 367842716, now seen corresponding path program 1 times [2021-11-02 22:21:44,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:44,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520416665] [2021-11-02 22:21:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:44,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:45,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:45,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520416665] [2021-11-02 22:21:45,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520416665] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:45,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032319952] [2021-11-02 22:21:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:45,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:45,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:21:45,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:21:45,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:21:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:46,215 WARN L261 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 136 conjunts are in the unsatisfiable core [2021-11-02 22:21:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:21:46,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:21:46,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,582 INFO L354 Elim1Store]: treesize reduction 209, result has 9.1 percent of original size [2021-11-02 22:21:46,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 378 treesize of output 189 [2021-11-02 22:21:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:46,640 INFO L354 Elim1Store]: treesize reduction 213, result has 9.7 percent of original size [2021-11-02 22:21:46,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 279 treesize of output 98 [2021-11-02 22:21:46,957 INFO L354 Elim1Store]: treesize reduction 510, result has 9.3 percent of original size [2021-11-02 22:21:46,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 250 treesize of output 191 [2021-11-02 22:21:47,042 INFO L354 Elim1Store]: treesize reduction 350, result has 12.5 percent of original size [2021-11-02 22:21:47,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 226 treesize of output 185 [2021-11-02 22:21:47,438 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-02 22:21:47,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-02 22:21:47,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:47,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:47,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:47,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:47,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:47,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,062 INFO L354 Elim1Store]: treesize reduction 1916, result has 3.4 percent of original size [2021-11-02 22:21:48,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 566 treesize of output 331 [2021-11-02 22:21:48,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,278 INFO L354 Elim1Store]: treesize reduction 1441, result has 4.7 percent of original size [2021-11-02 22:21:48,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 472 treesize of output 260 [2021-11-02 22:21:48,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:48,822 INFO L354 Elim1Store]: treesize reduction 1140, result has 6.7 percent of original size [2021-11-02 22:21:48,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 37 case distinctions, treesize of input 533 treesize of output 355 [2021-11-02 22:21:48,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:49,073 INFO L354 Elim1Store]: treesize reduction 952, result has 7.8 percent of original size [2021-11-02 22:21:49,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 17 new quantified variables, introduced 37 case distinctions, treesize of input 533 treesize of output 340 [2021-11-02 22:21:50,689 INFO L354 Elim1Store]: treesize reduction 440, result has 0.2 percent of original size [2021-11-02 22:21:50,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 474 treesize of output 257 [2021-11-02 22:21:51,082 INFO L354 Elim1Store]: treesize reduction 57, result has 12.3 percent of original size [2021-11-02 22:21:51,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 55 case distinctions, treesize of input 173 treesize of output 54 [2021-11-02 22:21:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:51,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032319952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:51,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:21:51,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-02 22:21:51,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837536505] [2021-11-02 22:21:51,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:21:51,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:21:51,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:21:51,111 INFO L87 Difference]: Start difference. First operand 374 states and 408 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:56,135 INFO L93 Difference]: Finished difference Result 499 states and 517 transitions. [2021-11-02 22:21:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:21:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-02 22:21:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:56,141 INFO L225 Difference]: With dead ends: 499 [2021-11-02 22:21:56,142 INFO L226 Difference]: Without dead ends: 495 [2021-11-02 22:21:56,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:21:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-02 22:21:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 377. [2021-11-02 22:21:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 352 states have (on average 1.1647727272727273) internal successors, (410), 376 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 410 transitions. [2021-11-02 22:21:56,178 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 410 transitions. Word has length 38 [2021-11-02 22:21:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:56,179 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 410 transitions. [2021-11-02 22:21:56,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 410 transitions. [2021-11-02 22:21:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 22:21:56,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:56,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:56,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:21:56,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 22:21:56,408 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1989690792, now seen corresponding path program 1 times [2021-11-02 22:21:56,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:56,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363848074] [2021-11-02 22:21:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:56,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:56,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:56,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363848074] [2021-11-02 22:21:56,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363848074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:56,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:56,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:21:56,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957584562] [2021-11-02 22:21:56,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:21:56,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:21:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:21:56,474 INFO L87 Difference]: Start difference. First operand 377 states and 410 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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) [2021-11-02 22:21:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:56,690 INFO L93 Difference]: Finished difference Result 377 states and 410 transitions. [2021-11-02 22:21:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:21:56,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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 41 [2021-11-02 22:21:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:56,692 INFO L225 Difference]: With dead ends: 377 [2021-11-02 22:21:56,693 INFO L226 Difference]: Without dead ends: 373 [2021-11-02 22:21:56,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:21:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-02 22:21:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-02 22:21:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 350 states have (on average 1.1542857142857144) internal successors, (404), 372 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 404 transitions. [2021-11-02 22:21:56,724 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 404 transitions. Word has length 41 [2021-11-02 22:21:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:56,724 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 404 transitions. [2021-11-02 22:21:56,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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) [2021-11-02 22:21:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 404 transitions. [2021-11-02 22:21:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 22:21:56,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:56,725 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:56,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:21:56,726 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:21:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1946720774, now seen corresponding path program 1 times [2021-11-02 22:21:56,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:56,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229148153] [2021-11-02 22:21:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:56,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:21:57,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:57,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229148153] [2021-11-02 22:21:57,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229148153] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:57,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383507412] [2021-11-02 22:21:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:57,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:21:57,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:21:57,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:21:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:58,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-02 22:21:58,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:21:58,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:58,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:58,400 INFO L354 Elim1Store]: treesize reduction 318, result has 9.4 percent of original size [2021-11-02 22:21:58,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 236 treesize of output 80 [2021-11-02 22:21:58,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:58,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 59 [2021-11-02 22:21:58,425 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 56 treesize of output 52 [2021-11-02 22:21:58,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:21:58,622 INFO L354 Elim1Store]: treesize reduction 314, result has 16.9 percent of original size [2021-11-02 22:21:58,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 92 [2021-11-02 22:21:58,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_gl_insert_~node~1.offset] [2021-11-02 22:21:58,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:21:58,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-02 22:21:58,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457263339] [2021-11-02 22:21:58,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:21:58,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:21:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:21:58,779 INFO L87 Difference]: Start difference. First operand 373 states and 404 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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) [2021-11-02 22:22:00,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:00,596 INFO L93 Difference]: Finished difference Result 431 states and 462 transitions. [2021-11-02 22:22:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:22:00,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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 41 [2021-11-02 22:22:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:00,599 INFO L225 Difference]: With dead ends: 431 [2021-11-02 22:22:00,599 INFO L226 Difference]: Without dead ends: 427 [2021-11-02 22:22:00,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:22:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-02 22:22:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 380. [2021-11-02 22:22:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 358 states have (on average 1.1508379888268156) internal successors, (412), 379 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 412 transitions. [2021-11-02 22:22:00,644 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 412 transitions. Word has length 41 [2021-11-02 22:22:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:00,645 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 412 transitions. [2021-11-02 22:22:00,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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) [2021-11-02 22:22:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 412 transitions. [2021-11-02 22:22:00,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:22:00,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:00,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:00,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:00,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:22:00,872 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:22:00,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:00,872 INFO L85 PathProgramCache]: Analyzing trace with hash -28709539, now seen corresponding path program 1 times [2021-11-02 22:22:00,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:00,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591380244] [2021-11-02 22:22:00,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:00,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:00,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:00,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591380244] [2021-11-02 22:22:00,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591380244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:00,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:00,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:22:00,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147040111] [2021-11-02 22:22:00,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:22:00,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:22:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:22:00,994 INFO L87 Difference]: Start difference. First operand 380 states and 412 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:01,487 INFO L93 Difference]: Finished difference Result 380 states and 412 transitions. [2021-11-02 22:22:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:22:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-02 22:22:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:01,490 INFO L225 Difference]: With dead ends: 380 [2021-11-02 22:22:01,490 INFO L226 Difference]: Without dead ends: 376 [2021-11-02 22:22:01,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:22:01,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-02 22:22:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-02 22:22:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 356 states have (on average 1.1404494382022472) internal successors, (406), 375 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 406 transitions. [2021-11-02 22:22:01,523 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 406 transitions. Word has length 44 [2021-11-02 22:22:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:01,523 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 406 transitions. [2021-11-02 22:22:01,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 406 transitions. [2021-11-02 22:22:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:22:01,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:01,524 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:01,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:22:01,525 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:22:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash -178856397, now seen corresponding path program 1 times [2021-11-02 22:22:01,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:01,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581956961] [2021-11-02 22:22:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:01,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:02,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:02,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581956961] [2021-11-02 22:22:02,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581956961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:02,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397126149] [2021-11-02 22:22:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:02,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:02,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:02,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:22:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:03,052 WARN L261 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 143 conjunts are in the unsatisfiable core [2021-11-02 22:22:03,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:03,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:22:03,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,364 INFO L354 Elim1Store]: treesize reduction 260, result has 7.5 percent of original size [2021-11-02 22:22:03,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 396 treesize of output 201 [2021-11-02 22:22:03,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,387 INFO L354 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2021-11-02 22:22:03,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 234 treesize of output 91 [2021-11-02 22:22:03,620 INFO L354 Elim1Store]: treesize reduction 506, result has 9.3 percent of original size [2021-11-02 22:22:03,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 214 treesize of output 180 [2021-11-02 22:22:03,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:03,683 INFO L354 Elim1Store]: treesize reduction 360, result has 12.6 percent of original size [2021-11-02 22:22:03,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 214 treesize of output 182 [2021-11-02 22:22:04,062 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-02 22:22:04,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-02 22:22:04,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,644 INFO L354 Elim1Store]: treesize reduction 1773, result has 5.0 percent of original size [2021-11-02 22:22:04,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 533 treesize of output 341 [2021-11-02 22:22:04,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:04,894 INFO L354 Elim1Store]: treesize reduction 1813, result has 5.1 percent of original size [2021-11-02 22:22:04,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 488 treesize of output 315 [2021-11-02 22:22:05,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:05,661 INFO L354 Elim1Store]: treesize reduction 1766, result has 6.3 percent of original size [2021-11-02 22:22:05,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 46 case distinctions, treesize of input 625 treesize of output 437 [2021-11-02 22:22:05,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:06,005 INFO L354 Elim1Store]: treesize reduction 1120, result has 7.2 percent of original size [2021-11-02 22:22:06,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 19 new quantified variables, introduced 46 case distinctions, treesize of input 625 treesize of output 392 [2021-11-02 22:22:18,306 INFO L354 Elim1Store]: treesize reduction 703, result has 3.8 percent of original size [2021-11-02 22:22:18,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 18 new quantified variables, introduced 66 case distinctions, treesize of input 545 treesize of output 320 [2021-11-02 22:22:18,404 INFO L354 Elim1Store]: treesize reduction 287, result has 6.5 percent of original size [2021-11-02 22:22:18,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 66 case distinctions, treesize of input 263 treesize of output 130 [2021-11-02 22:22:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:18,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397126149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:18,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:18,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-11-02 22:22:18,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964220779] [2021-11-02 22:22:18,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 22:22:18,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 22:22:18,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-11-02 22:22:18,516 INFO L87 Difference]: Start difference. First operand 376 states and 406 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:28,137 INFO L93 Difference]: Finished difference Result 474 states and 494 transitions. [2021-11-02 22:22:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:22:28,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-02 22:22:28,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:28,140 INFO L225 Difference]: With dead ends: 474 [2021-11-02 22:22:28,141 INFO L226 Difference]: Without dead ends: 466 [2021-11-02 22:22:28,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=227, Invalid=1413, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 22:22:28,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-02 22:22:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 393. [2021-11-02 22:22:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 373 states have (on average 1.1313672922252012) internal successors, (422), 392 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 422 transitions. [2021-11-02 22:22:28,185 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 422 transitions. Word has length 44 [2021-11-02 22:22:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:28,185 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 422 transitions. [2021-11-02 22:22:28,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 422 transitions. [2021-11-02 22:22:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 22:22:28,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:28,186 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:28,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-02 22:22:28,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:22:28,400 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:22:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:28,400 INFO L85 PathProgramCache]: Analyzing trace with hash -649144285, now seen corresponding path program 2 times [2021-11-02 22:22:28,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:28,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331213577] [2021-11-02 22:22:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:28,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:29,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:29,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331213577] [2021-11-02 22:22:29,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331213577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:29,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632619855] [2021-11-02 22:22:29,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:22:29,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:29,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:29,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:29,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:22:31,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:22:31,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:31,038 WARN L261 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 186 conjunts are in the unsatisfiable core [2021-11-02 22:22:31,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:31,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:22:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,349 INFO L354 Elim1Store]: treesize reduction 183, result has 14.1 percent of original size [2021-11-02 22:22:31,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 349 treesize of output 179 [2021-11-02 22:22:31,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,416 INFO L354 Elim1Store]: treesize reduction 285, result has 11.8 percent of original size [2021-11-02 22:22:31,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 266 treesize of output 121 [2021-11-02 22:22:31,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,769 INFO L354 Elim1Store]: treesize reduction 660, result has 8.5 percent of original size [2021-11-02 22:22:31,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 285 treesize of output 225 [2021-11-02 22:22:31,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:31,867 INFO L354 Elim1Store]: treesize reduction 488, result has 10.8 percent of original size [2021-11-02 22:22:31,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 261 treesize of output 211 [2021-11-02 22:22:32,353 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-11-02 22:22:32,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-11-02 22:22:32,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:32,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:32,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:32,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:32,982 INFO L354 Elim1Store]: treesize reduction 536, result has 9.5 percent of original size [2021-11-02 22:22:32,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 560 treesize of output 319 [2021-11-02 22:22:32,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:33,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:33,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:33,107 INFO L354 Elim1Store]: treesize reduction 612, result has 11.3 percent of original size [2021-11-02 22:22:33,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 490 treesize of output 281 [2021-11-02 22:22:33,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:33,737 INFO L354 Elim1Store]: treesize reduction 1180, result has 7.0 percent of original size [2021-11-02 22:22:33,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 514 treesize of output 306 [2021-11-02 22:22:33,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:33,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:34,038 INFO L354 Elim1Store]: treesize reduction 1206, result has 7.9 percent of original size [2021-11-02 22:22:34,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 45 case distinctions, treesize of input 377 treesize of output 334 [2021-11-02 22:22:36,360 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-11-02 22:22:36,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 235 [2021-11-02 22:22:37,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:37,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:37,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:37,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:38,433 INFO L354 Elim1Store]: treesize reduction 2562, result has 4.3 percent of original size [2021-11-02 22:22:38,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 66 case distinctions, treesize of input 742 treesize of output 481 [2021-11-02 22:22:38,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:38,736 INFO L354 Elim1Store]: treesize reduction 656, result has 5.2 percent of original size [2021-11-02 22:22:38,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 7 disjoint index pairs (out of 55 index pairs), introduced 19 new quantified variables, introduced 59 case distinctions, treesize of input 822 treesize of output 576 [2021-11-02 22:22:38,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:38,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:38,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:38,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:39,116 INFO L354 Elim1Store]: treesize reduction 1222, result has 5.8 percent of original size [2021-11-02 22:22:39,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 13 disjoint index pairs (out of 55 index pairs), introduced 18 new quantified variables, introduced 65 case distinctions, treesize of input 785 treesize of output 410 [2021-11-02 22:22:40,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:40,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:40,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:40,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:41,267 INFO L354 Elim1Store]: treesize reduction 1130, result has 8.2 percent of original size [2021-11-02 22:22:41,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 10 disjoint index pairs (out of 78 index pairs), introduced 20 new quantified variables, introduced 92 case distinctions, treesize of input 571 treesize of output 375 [2021-11-02 22:22:41,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:41,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:22:41,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:22:41,876 INFO L354 Elim1Store]: treesize reduction 2412, result has 7.5 percent of original size [2021-11-02 22:22:41,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 10 disjoint index pairs (out of 78 index pairs), introduced 18 new quantified variables, introduced 92 case distinctions, treesize of input 715 treesize of output 573 [2021-11-02 22:22:56,072 INFO L354 Elim1Store]: treesize reduction 905, result has 0.9 percent of original size [2021-11-02 22:22:56,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 10 disjoint index pairs (out of 105 index pairs), introduced 21 new quantified variables, introduced 105 case distinctions, treesize of input 941 treesize of output 447 [2021-11-02 22:22:56,747 INFO L354 Elim1Store]: treesize reduction 260, result has 10.0 percent of original size [2021-11-02 22:22:56,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 10 disjoint index pairs (out of 105 index pairs), introduced 18 new quantified variables, introduced 105 case distinctions, treesize of input 303 treesize of output 104 [2021-11-02 22:22:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:56,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632619855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:56,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:56,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 22:22:56,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555288456] [2021-11-02 22:22:56,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:22:56,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:22:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=674, Unknown=4, NotChecked=0, Total=756 [2021-11-02 22:22:56,840 INFO L87 Difference]: Start difference. First operand 393 states and 422 transitions. Second operand has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 27 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:15,230 INFO L93 Difference]: Finished difference Result 764 states and 796 transitions. [2021-11-02 22:23:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:23:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 27 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-02 22:23:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:15,233 INFO L225 Difference]: With dead ends: 764 [2021-11-02 22:23:15,234 INFO L226 Difference]: Without dead ends: 760 [2021-11-02 22:23:15,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=357, Invalid=2291, Unknown=4, NotChecked=0, Total=2652 [2021-11-02 22:23:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-11-02 22:23:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 486. [2021-11-02 22:23:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 466 states have (on average 1.1330472103004292) internal successors, (528), 485 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 528 transitions. [2021-11-02 22:23:15,295 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 528 transitions. Word has length 44 [2021-11-02 22:23:15,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:15,295 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 528 transitions. [2021-11-02 22:23:15,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 27 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 528 transitions. [2021-11-02 22:23:15,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:23:15,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:15,297 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:15,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:23:15,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:15,512 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:23:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1819868223, now seen corresponding path program 1 times [2021-11-02 22:23:15,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:15,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763066731] [2021-11-02 22:23:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:15,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:23:15,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:15,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763066731] [2021-11-02 22:23:15,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763066731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:23:15,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:23:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:23:15,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933126442] [2021-11-02 22:23:15,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:23:15,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:23:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:23:15,564 INFO L87 Difference]: Start difference. First operand 486 states and 528 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:15,737 INFO L93 Difference]: Finished difference Result 486 states and 528 transitions. [2021-11-02 22:23:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:23:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-02 22:23:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:15,740 INFO L225 Difference]: With dead ends: 486 [2021-11-02 22:23:15,740 INFO L226 Difference]: Without dead ends: 482 [2021-11-02 22:23:15,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:23:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-02 22:23:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 471. [2021-11-02 22:23:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 453 states have (on average 1.1258278145695364) internal successors, (510), 470 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 510 transitions. [2021-11-02 22:23:15,799 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 510 transitions. Word has length 46 [2021-11-02 22:23:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:15,800 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 510 transitions. [2021-11-02 22:23:15,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 510 transitions. [2021-11-02 22:23:15,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:23:15,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:15,801 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:15,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 22:23:15,801 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:23:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1749474426, now seen corresponding path program 1 times [2021-11-02 22:23:15,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:15,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398613253] [2021-11-02 22:23:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:15,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:23:16,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:16,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398613253] [2021-11-02 22:23:16,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398613253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:16,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620154572] [2021-11-02 22:23:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:16,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:16,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:16,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:16,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:23:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:18,208 WARN L261 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 141 conjunts are in the unsatisfiable core [2021-11-02 22:23:18,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:18,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:23:18,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,503 INFO L354 Elim1Store]: treesize reduction 264, result has 6.0 percent of original size [2021-11-02 22:23:18,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 387 treesize of output 188 [2021-11-02 22:23:18,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,527 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-02 22:23:18,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 86 [2021-11-02 22:23:18,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:18,812 INFO L354 Elim1Store]: treesize reduction 516, result has 9.5 percent of original size [2021-11-02 22:23:18,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 214 treesize of output 177 [2021-11-02 22:23:18,898 INFO L354 Elim1Store]: treesize reduction 350, result has 12.5 percent of original size [2021-11-02 22:23:18,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 214 treesize of output 185 [2021-11-02 22:23:19,353 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-02 22:23:19,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-02 22:23:19,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,927 INFO L354 Elim1Store]: treesize reduction 1916, result has 3.4 percent of original size [2021-11-02 22:23:19,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 578 treesize of output 339 [2021-11-02 22:23:19,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:19,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:20,102 INFO L354 Elim1Store]: treesize reduction 1455, result has 4.5 percent of original size [2021-11-02 22:23:20,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 22 case distinctions, treesize of input 486 treesize of output 263 [2021-11-02 22:23:20,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:20,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:20,535 INFO L354 Elim1Store]: treesize reduction 586, result has 10.1 percent of original size [2021-11-02 22:23:20,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 37 case distinctions, treesize of input 461 treesize of output 255 [2021-11-02 22:23:20,775 INFO L354 Elim1Store]: treesize reduction 1360, result has 8.1 percent of original size [2021-11-02 22:23:20,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 37 case distinctions, treesize of input 461 treesize of output 380 [2021-11-02 22:23:23,877 INFO L354 Elim1Store]: treesize reduction 186, result has 1.6 percent of original size [2021-11-02 22:23:23,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 55 case distinctions, treesize of input 321 treesize of output 144 [2021-11-02 22:23:23,944 INFO L354 Elim1Store]: treesize reduction 288, result has 3.7 percent of original size [2021-11-02 22:23:23,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 13 new quantified variables, introduced 66 case distinctions, treesize of input 108 treesize of output 67 [2021-11-02 22:23:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:23:23,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620154572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:23,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:23,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-02 22:23:23,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010352200] [2021-11-02 22:23:23,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:23:23,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:23,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:23:23,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:23:23,989 INFO L87 Difference]: Start difference. First operand 471 states and 510 transitions. Second operand has 24 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:32,025 INFO L93 Difference]: Finished difference Result 675 states and 718 transitions. [2021-11-02 22:23:32,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:23:32,026 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-02 22:23:32,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:32,028 INFO L225 Difference]: With dead ends: 675 [2021-11-02 22:23:32,028 INFO L226 Difference]: Without dead ends: 552 [2021-11-02 22:23:32,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=242, Invalid=1398, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 22:23:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-02 22:23:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 496. [2021-11-02 22:23:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 478 states have (on average 1.1213389121338913) internal successors, (536), 495 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 536 transitions. [2021-11-02 22:23:32,102 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 536 transitions. Word has length 47 [2021-11-02 22:23:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:32,103 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 536 transitions. [2021-11-02 22:23:32,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 23 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 536 transitions. [2021-11-02 22:23:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:23:32,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:32,104 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:32,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-02 22:23:32,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:32,322 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:23:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1586261997, now seen corresponding path program 2 times [2021-11-02 22:23:32,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:32,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336459038] [2021-11-02 22:23:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:32,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:23:33,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:33,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336459038] [2021-11-02 22:23:33,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336459038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:33,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675832901] [2021-11-02 22:23:33,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:23:33,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:33,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:33,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:23:34,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:23:34,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:23:34,856 WARN L261 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 189 conjunts are in the unsatisfiable core [2021-11-02 22:23:34,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:34,906 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-11-02 22:23:34,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-11-02 22:23:35,209 INFO L354 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2021-11-02 22:23:35,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 67 [2021-11-02 22:23:35,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,973 INFO L354 Elim1Store]: treesize reduction 209, result has 9.1 percent of original size [2021-11-02 22:23:35,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 378 treesize of output 189 [2021-11-02 22:23:35,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:35,991 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-02 22:23:35,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 86 [2021-11-02 22:23:36,739 INFO L354 Elim1Store]: treesize reduction 506, result has 9.3 percent of original size [2021-11-02 22:23:36,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 267 treesize of output 221 [2021-11-02 22:23:36,811 INFO L354 Elim1Store]: treesize reduction 350, result has 12.5 percent of original size [2021-11-02 22:23:36,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 270 treesize of output 229 [2021-11-02 22:23:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:38,548 INFO L354 Elim1Store]: treesize reduction 198, result has 22.7 percent of original size [2021-11-02 22:23:38,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 82 treesize of output 120 [2021-11-02 22:23:39,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:39,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:39,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:39,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:40,081 INFO L354 Elim1Store]: treesize reduction 446, result has 10.3 percent of original size [2021-11-02 22:23:40,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 595 treesize of output 327 [2021-11-02 22:23:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:40,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:40,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:40,172 INFO L354 Elim1Store]: treesize reduction 592, result has 10.7 percent of original size [2021-11-02 22:23:40,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 483 treesize of output 304 [2021-11-02 22:23:41,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:41,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:41,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:41,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:41,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:41,625 INFO L354 Elim1Store]: treesize reduction 586, result has 10.1 percent of original size [2021-11-02 22:23:41,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 482 treesize of output 305 [2021-11-02 22:23:41,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:41,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:41,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:41,812 INFO L354 Elim1Store]: treesize reduction 842, result has 9.9 percent of original size [2021-11-02 22:23:41,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 605 treesize of output 396 [2021-11-02 22:23:51,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:51,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:51,910 INFO L354 Elim1Store]: treesize reduction 130, result has 37.2 percent of original size [2021-11-02 22:23:51,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 226 treesize of output 278 [2021-11-02 22:23:52,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:53,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:53,270 INFO L354 Elim1Store]: treesize reduction 666, result has 10.6 percent of original size [2021-11-02 22:23:53,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 619 treesize of output 351 [2021-11-02 22:23:53,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:53,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:53,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:53,424 INFO L354 Elim1Store]: treesize reduction 866, result has 12.4 percent of original size [2021-11-02 22:23:53,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 14 disjoint index pairs (out of 45 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 540 treesize of output 373 [2021-11-02 22:23:53,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:53,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:54,114 INFO L354 Elim1Store]: treesize reduction 1508, result has 6.8 percent of original size [2021-11-02 22:23:54,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 15 new quantified variables, introduced 79 case distinctions, treesize of input 497 treesize of output 306 [2021-11-02 22:23:54,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:23:54,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:23:54,507 INFO L354 Elim1Store]: treesize reduction 2694, result has 7.0 percent of original size [2021-11-02 22:23:54,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 16 new quantified variables, introduced 79 case distinctions, treesize of input 585 treesize of output 589 [2021-11-02 22:23:56,629 INFO L354 Elim1Store]: treesize reduction 329, result has 2.4 percent of original size [2021-11-02 22:23:56,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 10 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 471 treesize of output 323 [2021-11-02 22:23:57,115 INFO L354 Elim1Store]: treesize reduction 129, result has 11.0 percent of original size [2021-11-02 22:23:57,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 10 disjoint index pairs (out of 105 index pairs), introduced 18 new quantified variables, introduced 105 case distinctions, treesize of input 285 treesize of output 77 [2021-11-02 22:23:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:23:57,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675832901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:57,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:57,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 22:23:57,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318423920] [2021-11-02 22:23:57,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:23:57,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:57,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:23:57,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:23:57,155 INFO L87 Difference]: Start difference. First operand 496 states and 536 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 27 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:09,952 INFO L93 Difference]: Finished difference Result 719 states and 755 transitions. [2021-11-02 22:24:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:24:09,953 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 27 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-02 22:24:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:09,957 INFO L225 Difference]: With dead ends: 719 [2021-11-02 22:24:09,957 INFO L226 Difference]: Without dead ends: 715 [2021-11-02 22:24:09,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=322, Invalid=1840, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 22:24:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-02 22:24:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 494. [2021-11-02 22:24:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 477 states have (on average 1.1153039832285114) internal successors, (532), 493 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 532 transitions. [2021-11-02 22:24:10,024 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 532 transitions. Word has length 47 [2021-11-02 22:24:10,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:10,025 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 532 transitions. [2021-11-02 22:24:10,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 27 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 532 transitions. [2021-11-02 22:24:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:24:10,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:10,026 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:10,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:10,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:10,252 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:24:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash -990961639, now seen corresponding path program 1 times [2021-11-02 22:24:10,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:10,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812259129] [2021-11-02 22:24:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:10,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:10,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:10,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812259129] [2021-11-02 22:24:10,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812259129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:10,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:10,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:24:10,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640723435] [2021-11-02 22:24:10,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:24:10,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:24:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:24:10,566 INFO L87 Difference]: Start difference. First operand 494 states and 532 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:11,893 INFO L93 Difference]: Finished difference Result 552 states and 591 transitions. [2021-11-02 22:24:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:24:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 22:24:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:11,895 INFO L225 Difference]: With dead ends: 552 [2021-11-02 22:24:11,895 INFO L226 Difference]: Without dead ends: 548 [2021-11-02 22:24:11,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:24:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-02 22:24:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 509. [2021-11-02 22:24:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 492 states have (on average 1.1097560975609757) internal successors, (546), 508 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 546 transitions. [2021-11-02 22:24:11,967 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 546 transitions. Word has length 53 [2021-11-02 22:24:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:11,968 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 546 transitions. [2021-11-02 22:24:11,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 546 transitions. [2021-11-02 22:24:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:24:11,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:11,969 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:11,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 22:24:11,969 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 31 more)] === [2021-11-02 22:24:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1194571716, now seen corresponding path program 2 times [2021-11-02 22:24:11,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:11,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705895826] [2021-11-02 22:24:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:11,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:13,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:13,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705895826] [2021-11-02 22:24:13,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705895826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:13,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293290920] [2021-11-02 22:24:13,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:24:13,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:13,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:13,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:13,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d08805-3045-450c-993f-982f48c401a6/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:24:15,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:24:15,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:15,540 WARN L261 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 175 conjunts are in the unsatisfiable core [2021-11-02 22:24:15,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:15,603 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-11-02 22:24:15,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-11-02 22:24:15,906 INFO L354 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2021-11-02 22:24:15,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 42 treesize of output 67 [2021-11-02 22:24:16,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:16,681 INFO L354 Elim1Store]: treesize reduction 288, result has 9.4 percent of original size [2021-11-02 22:24:16,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 378 treesize of output 189 [2021-11-02 22:24:16,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:16,727 INFO L354 Elim1Store]: treesize reduction 292, result has 9.9 percent of original size [2021-11-02 22:24:16,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 279 treesize of output 98 [2021-11-02 22:24:17,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:17,547 INFO L354 Elim1Store]: treesize reduction 516, result has 9.5 percent of original size [2021-11-02 22:24:17,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 268 treesize of output 202 [2021-11-02 22:24:17,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:17,626 INFO L354 Elim1Store]: treesize reduction 360, result has 12.6 percent of original size [2021-11-02 22:24:17,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 244 treesize of output 228 [2021-11-02 22:24:19,589 INFO L354 Elim1Store]: treesize reduction 186, result has 22.5 percent of original size [2021-11-02 22:24:19,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 74 treesize of output 110 [2021-11-02 22:24:21,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:21,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:22,099 INFO L354 Elim1Store]: treesize reduction 2031, result has 5.7 percent of original size [2021-11-02 22:24:22,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 595 treesize of output 402 [2021-11-02 22:24:22,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:22,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:22,390 INFO L354 Elim1Store]: treesize reduction 1589, result has 6.0 percent of original size [2021-11-02 22:24:22,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 530 treesize of output 368 [2021-11-02 22:24:24,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:24,802 INFO L354 Elim1Store]: treesize reduction 1078, result has 10.2 percent of original size [2021-11-02 22:24:24,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 45 case distinctions, treesize of input 871 treesize of output 485 [2021-11-02 22:24:24,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:24:25,230 INFO L354 Elim1Store]: treesize reduction 1636, result has 8.2 percent of original size [2021-11-02 22:24:25,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 45 case distinctions, treesize of input 746 treesize of output 557