./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/pr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/pr5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:45:17,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:45:17,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:45:17,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:45:17,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:45:17,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:45:17,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:45:17,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:45:17,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:45:17,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:45:17,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:45:17,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:45:17,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:45:17,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:45:17,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:45:17,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:45:17,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:45:17,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:45:17,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:45:17,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:45:17,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:45:17,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:45:17,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:45:17,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:45:17,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:45:17,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:45:17,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:45:17,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:45:17,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:45:17,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:45:17,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:45:17,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:45:17,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:45:17,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:45:17,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:45:17,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:45:17,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:45:17,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:45:17,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:45:17,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:45:17,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:45:17,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:45:17,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:45:17,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:45:17,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:45:17,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:45:17,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:45:17,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:45:17,624 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:45:17,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:45:17,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:45:17,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:45:17,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:45:17,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:45:17,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:45:17,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:45:17,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:45:17,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:45:17,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:45:17,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:45:17,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:45:17,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:45:17,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:45:17,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:45:17,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:45:17,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:45:17,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:45:17,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:45:17,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:45:17,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:45:17,631 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:45:17,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:45:17,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:45:17,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:45:17,634 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_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 374c198ea90130277bd1a124bc94571dd240bc0803e6f3936a68065c719ddd5a [2021-11-22 14:45:17,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:45:18,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:45:18,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:45:18,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:45:18,022 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:45:18,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-tiling/pr5.c [2021-11-22 14:45:18,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/data/2227debc0/4b9c371af2d14f81a15875d30d11bc9e/FLAG5581373d4 [2021-11-22 14:45:18,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:45:18,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/sv-benchmarks/c/array-tiling/pr5.c [2021-11-22 14:45:18,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/data/2227debc0/4b9c371af2d14f81a15875d30d11bc9e/FLAG5581373d4 [2021-11-22 14:45:19,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/data/2227debc0/4b9c371af2d14f81a15875d30d11bc9e [2021-11-22 14:45:19,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:45:19,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:45:19,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:45:19,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:45:19,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:45:19,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ccbf616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19, skipping insertion in model container [2021-11-22 14:45:19,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:45:19,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:45:19,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/sv-benchmarks/c/array-tiling/pr5.c[394,407] [2021-11-22 14:45:19,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:45:19,306 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:45:19,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/sv-benchmarks/c/array-tiling/pr5.c[394,407] [2021-11-22 14:45:19,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:45:19,352 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:45:19,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19 WrapperNode [2021-11-22 14:45:19,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:45:19,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:45:19,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:45:19,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:45:19,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,400 INFO L137 Inliner]: procedures = 15, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2021-11-22 14:45:19,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:45:19,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:45:19,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:45:19,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:45:19,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:45:19,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:45:19,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:45:19,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:45:19,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (1/1) ... [2021-11-22 14:45:19,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:45:19,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:19,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:45:19,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:45:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:45:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:45:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:45:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:45:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:45:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:45:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:45:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:45:19,609 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:45:19,610 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:45:19,818 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:45:19,825 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:45:19,826 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 14:45:19,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:45:19 BoogieIcfgContainer [2021-11-22 14:45:19,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:45:19,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:45:19,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:45:19,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:45:19,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:45:19" (1/3) ... [2021-11-22 14:45:19,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8e4dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:45:19, skipping insertion in model container [2021-11-22 14:45:19,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:19" (2/3) ... [2021-11-22 14:45:19,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8e4dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:45:19, skipping insertion in model container [2021-11-22 14:45:19,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:45:19" (3/3) ... [2021-11-22 14:45:19,839 INFO L111 eAbstractionObserver]: Analyzing ICFG pr5.c [2021-11-22 14:45:19,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:45:19,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:45:19,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:45:19,916 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 [2021-11-22 14:45:19,917 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:45:19,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 14:45:19,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:19,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:19,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:19,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:19,951 INFO L85 PathProgramCache]: Analyzing trace with hash -50963655, now seen corresponding path program 1 times [2021-11-22 14:45:19,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:19,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012176002] [2021-11-22 14:45:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:19,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:20,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:20,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012176002] [2021-11-22 14:45:20,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012176002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:20,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:20,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:45:20,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775150691] [2021-11-22 14:45:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:20,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:45:20,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:45:20,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:45:20,270 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:20,304 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2021-11-22 14:45:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:45:20,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 14:45:20,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:20,318 INFO L225 Difference]: With dead ends: 49 [2021-11-22 14:45:20,318 INFO L226 Difference]: Without dead ends: 22 [2021-11-22 14:45:20,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:45:20,333 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:20,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:45:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-22 14:45:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-22 14:45:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-11-22 14:45:20,370 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2021-11-22 14:45:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:20,371 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-11-22 14:45:20,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-11-22 14:45:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 14:45:20,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:20,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:20,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:45:20,373 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash 629094715, now seen corresponding path program 1 times [2021-11-22 14:45:20,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:20,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269973790] [2021-11-22 14:45:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:20,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:20,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269973790] [2021-11-22 14:45:20,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269973790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:20,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:20,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:45:20,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457759339] [2021-11-22 14:45:20,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:20,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:45:20,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:45:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:45:20,546 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:20,622 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-11-22 14:45:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:45:20,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 14:45:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:20,625 INFO L225 Difference]: With dead ends: 31 [2021-11-22 14:45:20,625 INFO L226 Difference]: Without dead ends: 29 [2021-11-22 14:45:20,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:45:20,628 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:20,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 77 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:45:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-22 14:45:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-22 14:45:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-11-22 14:45:20,649 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2021-11-22 14:45:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:20,650 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-11-22 14:45:20,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-11-22 14:45:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 14:45:20,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:20,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:20,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:45:20,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash 629154297, now seen corresponding path program 1 times [2021-11-22 14:45:20,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:20,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412203676] [2021-11-22 14:45:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:20,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:20,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412203676] [2021-11-22 14:45:20,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412203676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:20,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:20,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:45:20,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863033629] [2021-11-22 14:45:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:20,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:45:20,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:45:20,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:45:20,929 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:21,053 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-22 14:45:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:45:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 14:45:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:21,058 INFO L225 Difference]: With dead ends: 42 [2021-11-22 14:45:21,058 INFO L226 Difference]: Without dead ends: 31 [2021-11-22 14:45:21,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:45:21,061 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:21,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:45:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-22 14:45:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2021-11-22 14:45:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-11-22 14:45:21,076 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2021-11-22 14:45:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:21,076 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-11-22 14:45:21,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-11-22 14:45:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 14:45:21,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:21,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:21,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:45:21,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 314139906, now seen corresponding path program 1 times [2021-11-22 14:45:21,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:21,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408854136] [2021-11-22 14:45:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:21,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:21,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:21,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408854136] [2021-11-22 14:45:21,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408854136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:21,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:21,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:45:21,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492387379] [2021-11-22 14:45:21,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:21,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:45:21,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:45:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:45:21,260 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:21,346 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-11-22 14:45:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:45:21,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 14:45:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:21,350 INFO L225 Difference]: With dead ends: 61 [2021-11-22 14:45:21,350 INFO L226 Difference]: Without dead ends: 43 [2021-11-22 14:45:21,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:45:21,352 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:21,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 42 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:45:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-22 14:45:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2021-11-22 14:45:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2021-11-22 14:45:21,372 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 20 [2021-11-22 14:45:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:21,373 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-11-22 14:45:21,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2021-11-22 14:45:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 14:45:21,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:21,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:21,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:45:21,375 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash 994198276, now seen corresponding path program 1 times [2021-11-22 14:45:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:21,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618032170] [2021-11-22 14:45:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:21,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:21,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:21,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618032170] [2021-11-22 14:45:21,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618032170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:21,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:21,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:45:21,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456643446] [2021-11-22 14:45:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:21,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:45:21,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:45:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:45:21,528 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:21,620 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2021-11-22 14:45:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:45:21,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 14:45:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:21,622 INFO L225 Difference]: With dead ends: 78 [2021-11-22 14:45:21,623 INFO L226 Difference]: Without dead ends: 50 [2021-11-22 14:45:21,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:45:21,625 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 59 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:21,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 36 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:45:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-22 14:45:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2021-11-22 14:45:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 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) [2021-11-22 14:45:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-11-22 14:45:21,636 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 20 [2021-11-22 14:45:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:21,637 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-11-22 14:45:21,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2021-11-22 14:45:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 14:45:21,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:21,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:21,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:45:21,640 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash 707166916, now seen corresponding path program 1 times [2021-11-22 14:45:21,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:21,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777746182] [2021-11-22 14:45:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:21,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:22,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:22,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777746182] [2021-11-22 14:45:22,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777746182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:22,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468699794] [2021-11-22 14:45:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:22,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:22,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:22,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:22,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:45:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:22,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 14:45:22,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:22,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:45:22,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:22,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:22,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:22,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:22,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:22,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:22,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-11-22 14:45:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:22,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:23,204 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 23 treesize of output 21 [2021-11-22 14:45:23,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 64 [2021-11-22 14:45:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468699794] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:23,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:23,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2021-11-22 14:45:23,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577374266] [2021-11-22 14:45:23,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:23,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 14:45:23,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 14:45:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-22 14:45:23,323 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:24,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:24,445 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2021-11-22 14:45:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 14:45:24,445 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have 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 [2021-11-22 14:45:24,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:24,447 INFO L225 Difference]: With dead ends: 144 [2021-11-22 14:45:24,448 INFO L226 Difference]: Without dead ends: 126 [2021-11-22 14:45:24,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-11-22 14:45:24,454 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 283 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:24,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 141 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 14:45:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-22 14:45:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 61. [2021-11-22 14:45:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 60 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 86 transitions. [2021-11-22 14:45:24,479 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 86 transitions. Word has length 20 [2021-11-22 14:45:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:24,480 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 86 transitions. [2021-11-22 14:45:24,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 86 transitions. [2021-11-22 14:45:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 14:45:24,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:24,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:24,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:45:24,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:24,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:24,716 INFO L85 PathProgramCache]: Analyzing trace with hash 407392262, now seen corresponding path program 1 times [2021-11-22 14:45:24,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:24,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106145997] [2021-11-22 14:45:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:24,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:25,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:25,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106145997] [2021-11-22 14:45:25,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106145997] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:25,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114557331] [2021-11-22 14:45:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:25,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:25,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:25,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:25,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:45:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:25,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-22 14:45:25,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:25,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:45:25,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:45:25,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-11-22 14:45:25,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:45:25,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-11-22 14:45:25,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:45:25,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-11-22 14:45:25,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:25,263 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:45:25,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-22 14:45:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:25,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:25,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-11-22 14:45:25,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2021-11-22 14:45:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:25,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114557331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:25,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:25,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 16 [2021-11-22 14:45:25,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882054966] [2021-11-22 14:45:25,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:25,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 14:45:25,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 14:45:25,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-22 14:45:25,623 INFO L87 Difference]: Start difference. First operand 61 states and 86 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:26,714 INFO L93 Difference]: Finished difference Result 162 states and 209 transitions. [2021-11-22 14:45:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-22 14:45:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 14:45:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:26,717 INFO L225 Difference]: With dead ends: 162 [2021-11-22 14:45:26,717 INFO L226 Difference]: Without dead ends: 160 [2021-11-22 14:45:26,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=429, Invalid=1463, Unknown=0, NotChecked=0, Total=1892 [2021-11-22 14:45:26,720 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 181 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:26,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 146 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 14:45:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-22 14:45:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 64. [2021-11-22 14:45:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2021-11-22 14:45:26,741 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 20 [2021-11-22 14:45:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:26,742 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2021-11-22 14:45:26,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2021-11-22 14:45:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 14:45:26,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:26,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:26,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:45:26,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:26,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1616202537, now seen corresponding path program 1 times [2021-11-22 14:45:26,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:26,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461714461] [2021-11-22 14:45:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:26,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:27,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:27,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461714461] [2021-11-22 14:45:27,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461714461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:27,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119004726] [2021-11-22 14:45:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:27,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:27,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:27,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:45:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:27,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 14:45:27,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:27,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:45:27,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:27,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:27,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:27,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:27,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:27,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:27,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:28,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-22 14:45:28,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 153 [2021-11-22 14:45:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:28,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119004726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:28,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:28,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2021-11-22 14:45:28,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681650274] [2021-11-22 14:45:28,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:28,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 14:45:28,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 14:45:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-11-22 14:45:28,352 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:29,913 INFO L93 Difference]: Finished difference Result 361 states and 505 transitions. [2021-11-22 14:45:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 14:45:29,914 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have 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 [2021-11-22 14:45:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:29,918 INFO L225 Difference]: With dead ends: 361 [2021-11-22 14:45:29,918 INFO L226 Difference]: Without dead ends: 314 [2021-11-22 14:45:29,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2021-11-22 14:45:29,921 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 307 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:29,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 149 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 14:45:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-22 14:45:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 135. [2021-11-22 14:45:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4477611940298507) internal successors, (194), 134 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 194 transitions. [2021-11-22 14:45:29,946 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 194 transitions. Word has length 26 [2021-11-22 14:45:29,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:29,947 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 194 transitions. [2021-11-22 14:45:29,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:29,948 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 194 transitions. [2021-11-22 14:45:29,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 14:45:29,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:29,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:29,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 14:45:30,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 14:45:30,175 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:30,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash 684620053, now seen corresponding path program 1 times [2021-11-22 14:45:30,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:30,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700476172] [2021-11-22 14:45:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:30,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 14:45:30,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:30,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700476172] [2021-11-22 14:45:30,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700476172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:30,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:30,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:45:30,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585666034] [2021-11-22 14:45:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:30,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:45:30,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:45:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:45:30,264 INFO L87 Difference]: Start difference. First operand 135 states and 194 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:30,308 INFO L93 Difference]: Finished difference Result 192 states and 271 transitions. [2021-11-22 14:45:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:45:30,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 14:45:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:30,311 INFO L225 Difference]: With dead ends: 192 [2021-11-22 14:45:30,311 INFO L226 Difference]: Without dead ends: 140 [2021-11-22 14:45:30,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:45:30,313 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:30,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:45:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-22 14:45:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2021-11-22 14:45:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 124 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2021-11-22 14:45:30,331 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 26 [2021-11-22 14:45:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:30,332 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2021-11-22 14:45:30,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2021-11-22 14:45:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 14:45:30,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:30,335 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:30,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:45:30,335 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:30,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:30,336 INFO L85 PathProgramCache]: Analyzing trace with hash -595243625, now seen corresponding path program 1 times [2021-11-22 14:45:30,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:30,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898670349] [2021-11-22 14:45:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:30,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 14:45:30,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:30,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898670349] [2021-11-22 14:45:30,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898670349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:30,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:30,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:45:30,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175914506] [2021-11-22 14:45:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:30,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:45:30,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:45:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:45:30,393 INFO L87 Difference]: Start difference. First operand 125 states and 172 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:30,439 INFO L93 Difference]: Finished difference Result 154 states and 203 transitions. [2021-11-22 14:45:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:45:30,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 14:45:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:30,444 INFO L225 Difference]: With dead ends: 154 [2021-11-22 14:45:30,444 INFO L226 Difference]: Without dead ends: 125 [2021-11-22 14:45:30,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:45:30,446 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:30,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:45:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-22 14:45:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2021-11-22 14:45:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 108 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-22 14:45:30,478 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 26 [2021-11-22 14:45:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:30,478 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-22 14:45:30,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-22 14:45:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 14:45:30,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:30,483 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:30,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:45:30,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash 989711575, now seen corresponding path program 1 times [2021-11-22 14:45:30,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:30,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578755253] [2021-11-22 14:45:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:30,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:30,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:30,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578755253] [2021-11-22 14:45:30,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578755253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:30,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918133433] [2021-11-22 14:45:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:30,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:30,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:30,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:45:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:30,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 14:45:30,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:30,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:45:30,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:45:30,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:30,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:30,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-11-22 14:45:30,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:45:30,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:30,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:30,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2021-11-22 14:45:30,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:30,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:45:30,945 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:45:30,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-22 14:45:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:31,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:31,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:45:31,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:45:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:31,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918133433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:31,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:31,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 18 [2021-11-22 14:45:31,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940499087] [2021-11-22 14:45:31,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:31,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 14:45:31,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 14:45:31,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-11-22 14:45:31,362 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:32,791 INFO L93 Difference]: Finished difference Result 337 states and 426 transitions. [2021-11-22 14:45:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-22 14:45:32,792 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 14:45:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:32,794 INFO L225 Difference]: With dead ends: 337 [2021-11-22 14:45:32,794 INFO L226 Difference]: Without dead ends: 335 [2021-11-22 14:45:32,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 37 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=784, Invalid=3122, Unknown=0, NotChecked=0, Total=3906 [2021-11-22 14:45:32,797 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 190 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:32,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 198 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:45:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-22 14:45:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 156. [2021-11-22 14:45:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.3483870967741935) internal successors, (209), 155 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 209 transitions. [2021-11-22 14:45:32,814 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 209 transitions. Word has length 26 [2021-11-22 14:45:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:32,814 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 209 transitions. [2021-11-22 14:45:32,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 209 transitions. [2021-11-22 14:45:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 14:45:32,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:32,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:32,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:45:33,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 14:45:33,023 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1583768663, now seen corresponding path program 1 times [2021-11-22 14:45:33,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640240112] [2021-11-22 14:45:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:33,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:33,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:33,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640240112] [2021-11-22 14:45:33,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640240112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:33,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:33,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:45:33,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530661120] [2021-11-22 14:45:33,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:33,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:45:33,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:33,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:45:33,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:45:33,072 INFO L87 Difference]: Start difference. First operand 156 states and 209 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:33,107 INFO L93 Difference]: Finished difference Result 188 states and 243 transitions. [2021-11-22 14:45:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:45:33,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 14:45:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:33,109 INFO L225 Difference]: With dead ends: 188 [2021-11-22 14:45:33,109 INFO L226 Difference]: Without dead ends: 153 [2021-11-22 14:45:33,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:45:33,115 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:33,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:45:33,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-22 14:45:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 137. [2021-11-22 14:45:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3308823529411764) internal successors, (181), 136 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 181 transitions. [2021-11-22 14:45:33,132 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 181 transitions. Word has length 27 [2021-11-22 14:45:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:33,133 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 181 transitions. [2021-11-22 14:45:33,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 181 transitions. [2021-11-22 14:45:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 14:45:33,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:33,137 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:33,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:45:33,137 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:33,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:33,138 INFO L85 PathProgramCache]: Analyzing trace with hash -958935894, now seen corresponding path program 2 times [2021-11-22 14:45:33,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:33,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446611969] [2021-11-22 14:45:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:33,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:33,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:33,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446611969] [2021-11-22 14:45:33,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446611969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:33,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132181931] [2021-11-22 14:45:33,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:45:33,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:33,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 14:45:33,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:45:33,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:45:33,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-22 14:45:33,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:33,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:45:33,618 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:45:33,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:33,662 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:45:33,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:34,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:34,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2021-11-22 14:45:34,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 344 [2021-11-22 14:45:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:34,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132181931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:34,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:34,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 28 [2021-11-22 14:45:34,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885284050] [2021-11-22 14:45:34,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:34,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 14:45:34,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 14:45:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-11-22 14:45:34,604 INFO L87 Difference]: Start difference. First operand 137 states and 181 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:38,501 INFO L93 Difference]: Finished difference Result 550 states and 689 transitions. [2021-11-22 14:45:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-22 14:45:38,501 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-22 14:45:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:38,504 INFO L225 Difference]: With dead ends: 550 [2021-11-22 14:45:38,504 INFO L226 Difference]: Without dead ends: 514 [2021-11-22 14:45:38,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1952 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1121, Invalid=5685, Unknown=0, NotChecked=0, Total=6806 [2021-11-22 14:45:38,508 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 474 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:38,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 175 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 14:45:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-22 14:45:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 179. [2021-11-22 14:45:38,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.2921348314606742) internal successors, (230), 178 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:38,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2021-11-22 14:45:38,528 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 32 [2021-11-22 14:45:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:38,529 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2021-11-22 14:45:38,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2021-11-22 14:45:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 14:45:38,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:38,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:38,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 14:45:38,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-22 14:45:38,743 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1605606378, now seen corresponding path program 1 times [2021-11-22 14:45:38,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:38,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144955348] [2021-11-22 14:45:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:38,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 14:45:38,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:38,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144955348] [2021-11-22 14:45:38,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144955348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:38,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:38,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:45:38,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550606074] [2021-11-22 14:45:38,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:38,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:45:38,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:38,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:45:38,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:45:38,785 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:38,819 INFO L93 Difference]: Finished difference Result 219 states and 276 transitions. [2021-11-22 14:45:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:45:38,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 14:45:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:38,822 INFO L225 Difference]: With dead ends: 219 [2021-11-22 14:45:38,822 INFO L226 Difference]: Without dead ends: 178 [2021-11-22 14:45:38,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:45:38,823 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:38,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 39 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:45:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-22 14:45:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 162. [2021-11-22 14:45:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.2732919254658386) internal successors, (205), 161 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 205 transitions. [2021-11-22 14:45:38,840 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 205 transitions. Word has length 33 [2021-11-22 14:45:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:38,840 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 205 transitions. [2021-11-22 14:45:38,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 205 transitions. [2021-11-22 14:45:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 14:45:38,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:38,842 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:38,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 14:45:38,843 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1633319485, now seen corresponding path program 3 times [2021-11-22 14:45:38,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:38,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757712214] [2021-11-22 14:45:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:38,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:39,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:39,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757712214] [2021-11-22 14:45:39,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757712214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:39,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055005942] [2021-11-22 14:45:39,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:45:39,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:39,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:39,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:39,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 14:45:39,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-22 14:45:39,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:45:39,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 14:45:39,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:39,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:45:39,443 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:45:39,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-11-22 14:45:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:39,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:40,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-22 14:45:40,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 153 [2021-11-22 14:45:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:40,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055005942] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:40,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:40,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2021-11-22 14:45:40,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067525395] [2021-11-22 14:45:40,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:40,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-22 14:45:40,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:40,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-22 14:45:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2021-11-22 14:45:40,376 INFO L87 Difference]: Start difference. First operand 162 states and 205 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:44,353 INFO L93 Difference]: Finished difference Result 550 states and 660 transitions. [2021-11-22 14:45:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-22 14:45:44,354 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-22 14:45:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:44,357 INFO L225 Difference]: With dead ends: 550 [2021-11-22 14:45:44,358 INFO L226 Difference]: Without dead ends: 534 [2021-11-22 14:45:44,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1153, Invalid=5009, Unknown=0, NotChecked=0, Total=6162 [2021-11-22 14:45:44,361 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 553 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:44,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 266 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 14:45:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-22 14:45:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 208. [2021-11-22 14:45:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.2318840579710144) internal successors, (255), 207 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 255 transitions. [2021-11-22 14:45:44,386 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 255 transitions. Word has length 38 [2021-11-22 14:45:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:44,387 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 255 transitions. [2021-11-22 14:45:44,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 255 transitions. [2021-11-22 14:45:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 14:45:44,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:44,388 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:44,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 14:45:44,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 14:45:44,607 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash -546292993, now seen corresponding path program 1 times [2021-11-22 14:45:44,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:44,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924563638] [2021-11-22 14:45:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:44,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:44,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:44,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924563638] [2021-11-22 14:45:44,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924563638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:44,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369663318] [2021-11-22 14:45:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:44,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:44,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:44,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 14:45:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:44,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 14:45:44,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:44,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:45:44,981 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:45:44,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:45:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:45,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:45,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:45:45,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:45:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:45,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369663318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:45,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:45,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 24 [2021-11-22 14:45:45,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525595943] [2021-11-22 14:45:45,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:45,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 14:45:45,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:45,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 14:45:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2021-11-22 14:45:45,501 INFO L87 Difference]: Start difference. First operand 208 states and 255 transitions. Second operand has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:48,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:48,231 INFO L93 Difference]: Finished difference Result 627 states and 744 transitions. [2021-11-22 14:45:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-22 14:45:48,232 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-11-22 14:45:48,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:48,235 INFO L225 Difference]: With dead ends: 627 [2021-11-22 14:45:48,235 INFO L226 Difference]: Without dead ends: 625 [2021-11-22 14:45:48,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2573 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1313, Invalid=6877, Unknown=0, NotChecked=0, Total=8190 [2021-11-22 14:45:48,239 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 287 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:48,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 264 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 14:45:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-22 14:45:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 230. [2021-11-22 14:45:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.2270742358078603) internal successors, (281), 229 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2021-11-22 14:45:48,267 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 38 [2021-11-22 14:45:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:48,268 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2021-11-22 14:45:48,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2021-11-22 14:45:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 14:45:48,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:48,269 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:48,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 14:45:48,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-22 14:45:48,495 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2075466350, now seen corresponding path program 1 times [2021-11-22 14:45:48,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:48,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571708862] [2021-11-22 14:45:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:48,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:48,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:48,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571708862] [2021-11-22 14:45:48,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571708862] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451044077] [2021-11-22 14:45:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:48,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:48,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:48,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:48,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 14:45:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:48,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 14:45:48,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:48,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 14:45:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:48,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:48,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:45:48,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:45:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:49,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451044077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:49,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:49,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 17 [2021-11-22 14:45:49,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384694874] [2021-11-22 14:45:49,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:49,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 14:45:49,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 14:45:49,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-22 14:45:49,018 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:52,172 INFO L93 Difference]: Finished difference Result 939 states and 1125 transitions. [2021-11-22 14:45:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-11-22 14:45:52,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 14:45:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:52,178 INFO L225 Difference]: With dead ends: 939 [2021-11-22 14:45:52,179 INFO L226 Difference]: Without dead ends: 937 [2021-11-22 14:45:52,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5384 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1389, Invalid=12653, Unknown=0, NotChecked=0, Total=14042 [2021-11-22 14:45:52,185 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 206 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:52,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 426 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-22 14:45:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-22 14:45:52,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 340. [2021-11-22 14:45:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.2625368731563422) internal successors, (428), 339 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 428 transitions. [2021-11-22 14:45:52,234 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 428 transitions. Word has length 44 [2021-11-22 14:45:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:52,235 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 428 transitions. [2021-11-22 14:45:52,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 428 transitions. [2021-11-22 14:45:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 14:45:52,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:52,237 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:52,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 14:45:52,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:52,447 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1961854480, now seen corresponding path program 1 times [2021-11-22 14:45:52,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:52,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787699983] [2021-11-22 14:45:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:52,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-22 14:45:52,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787699983] [2021-11-22 14:45:52,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787699983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:45:52,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:45:52,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:45:52,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169831684] [2021-11-22 14:45:52,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:45:52,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:45:52,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:45:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:45:52,482 INFO L87 Difference]: Start difference. First operand 340 states and 428 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:52,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:52,554 INFO L93 Difference]: Finished difference Result 380 states and 473 transitions. [2021-11-22 14:45:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:45:52,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 14:45:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:52,557 INFO L225 Difference]: With dead ends: 380 [2021-11-22 14:45:52,558 INFO L226 Difference]: Without dead ends: 302 [2021-11-22 14:45:52,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:45:52,559 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:52,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:45:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-22 14:45:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 286. [2021-11-22 14:45:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.249122807017544) internal successors, (356), 285 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 356 transitions. [2021-11-22 14:45:52,596 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 356 transitions. Word has length 45 [2021-11-22 14:45:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:52,596 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 356 transitions. [2021-11-22 14:45:52,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 356 transitions. [2021-11-22 14:45:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 14:45:52,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:52,598 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:52,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 14:45:52,599 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash -255895901, now seen corresponding path program 4 times [2021-11-22 14:45:52,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:52,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22043018] [2021-11-22 14:45:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:52,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:52,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:52,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22043018] [2021-11-22 14:45:52,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22043018] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:52,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093982171] [2021-11-22 14:45:52,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:45:52,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:52,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:52,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:52,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 14:45:53,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:45:53,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:45:53,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 14:45:53,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:53,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:54,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093982171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:54,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:54,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 34 [2021-11-22 14:45:54,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719075208] [2021-11-22 14:45:54,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:54,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-22 14:45:54,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-22 14:45:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 14:45:54,192 INFO L87 Difference]: Start difference. First operand 286 states and 356 transitions. Second operand has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:45:54,628 INFO L93 Difference]: Finished difference Result 477 states and 573 transitions. [2021-11-22 14:45:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 14:45:54,629 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-22 14:45:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:45:54,631 INFO L225 Difference]: With dead ends: 477 [2021-11-22 14:45:54,632 INFO L226 Difference]: Without dead ends: 345 [2021-11-22 14:45:54,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1099, Unknown=0, NotChecked=0, Total=1482 [2021-11-22 14:45:54,634 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 265 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:45:54,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 180 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:45:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-22 14:45:54,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 303. [2021-11-22 14:45:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.228476821192053) internal successors, (371), 302 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:54,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 371 transitions. [2021-11-22 14:45:54,678 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 371 transitions. Word has length 50 [2021-11-22 14:45:54,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:45:54,678 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 371 transitions. [2021-11-22 14:45:54,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.0588235294117645) internal successors, (138), 34 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:45:54,679 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 371 transitions. [2021-11-22 14:45:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 14:45:54,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:45:54,681 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:45:54,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-22 14:45:54,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:54,895 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:45:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:45:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 588720312, now seen corresponding path program 5 times [2021-11-22 14:45:54,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:45:54,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576318557] [2021-11-22 14:45:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:45:54,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:45:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:45:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:55,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:45:55,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576318557] [2021-11-22 14:45:55,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576318557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:45:55,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051656439] [2021-11-22 14:45:55,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 14:45:55,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:45:55,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:45:55,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:45:55,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 14:45:55,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-22 14:45:55,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:45:55,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-22 14:45:55,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:45:55,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:45:55,848 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:45:55,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:55,866 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:45:55,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:55,896 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:45:55,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:55,916 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:45:55,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:45:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:56,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:45:56,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:45:56,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-22 14:45:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:45:57,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051656439] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:45:57,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:45:57,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 40 [2021-11-22 14:45:57,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749654256] [2021-11-22 14:45:57,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:45:57,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-22 14:45:57,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:45:57,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-22 14:45:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2021-11-22 14:45:57,132 INFO L87 Difference]: Start difference. First operand 303 states and 371 transitions. Second operand has 40 states, 40 states have (on average 4.0) internal successors, (160), 40 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:46:04,563 INFO L93 Difference]: Finished difference Result 990 states and 1167 transitions. [2021-11-22 14:46:04,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-22 14:46:04,563 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.0) internal successors, (160), 40 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 14:46:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:46:04,567 INFO L225 Difference]: With dead ends: 990 [2021-11-22 14:46:04,568 INFO L226 Difference]: Without dead ends: 918 [2021-11-22 14:46:04,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 86 SyntacticMatches, 7 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7754 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2661, Invalid=20901, Unknown=0, NotChecked=0, Total=23562 [2021-11-22 14:46:04,577 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 728 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:46:04,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 700 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-22 14:46:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-22 14:46:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 341. [2021-11-22 14:46:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.2) internal successors, (408), 340 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) [2021-11-22 14:46:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 408 transitions. [2021-11-22 14:46:04,650 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 408 transitions. Word has length 57 [2021-11-22 14:46:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:46:04,650 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 408 transitions. [2021-11-22 14:46:04,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.0) internal successors, (160), 40 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 408 transitions. [2021-11-22 14:46:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 14:46:04,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:04,652 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:04,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 14:46:04,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:04,856 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:04,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1863223928, now seen corresponding path program 2 times [2021-11-22 14:46:04,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645566499] [2021-11-22 14:46:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:04,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:46:05,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645566499] [2021-11-22 14:46:05,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645566499] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:46:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98070139] [2021-11-22 14:46:05,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:46:05,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:05,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:05,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:46:05,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 14:46:05,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:46:05,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:46:05,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 14:46:05,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:46:05,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:46:05,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:46:05,212 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:46:05,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-22 14:46:05,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:46:05,255 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:46:05,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-22 14:46:05,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:46:05,291 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:46:05,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-22 14:46:05,350 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-22 14:46:05,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-22 14:46:06,427 INFO L354 Elim1Store]: treesize reduction 97, result has 3.0 percent of original size [2021-11-22 14:46:06,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 32 [2021-11-22 14:46:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:46:06,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:46:06,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:46:06,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:46:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:46:06,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98070139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:46:06,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:46:06,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 24 [2021-11-22 14:46:06,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716960970] [2021-11-22 14:46:06,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:46:06,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 14:46:06,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:46:06,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 14:46:06,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-11-22 14:46:06,724 INFO L87 Difference]: Start difference. First operand 341 states and 408 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:46:10,411 INFO L93 Difference]: Finished difference Result 709 states and 832 transitions. [2021-11-22 14:46:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-22 14:46:10,412 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 14:46:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:46:10,416 INFO L225 Difference]: With dead ends: 709 [2021-11-22 14:46:10,416 INFO L226 Difference]: Without dead ends: 707 [2021-11-22 14:46:10,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 103 SyntacticMatches, 15 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5504 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1506, Invalid=13500, Unknown=0, NotChecked=0, Total=15006 [2021-11-22 14:46:10,420 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 85 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 570 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:46:10,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 369 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1620 Invalid, 0 Unknown, 570 Unchecked, 1.3s Time] [2021-11-22 14:46:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-22 14:46:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 452. [2021-11-22 14:46:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.1951219512195121) internal successors, (539), 451 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 539 transitions. [2021-11-22 14:46:10,484 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 539 transitions. Word has length 57 [2021-11-22 14:46:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:46:10,484 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 539 transitions. [2021-11-22 14:46:10,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:46:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 539 transitions. [2021-11-22 14:46:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 14:46:10,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:46:10,486 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:46:10,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 14:46:10,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:10,711 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:46:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:46:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1470196918, now seen corresponding path program 3 times [2021-11-22 14:46:10,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:46:10,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944386515] [2021-11-22 14:46:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:46:10,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:46:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:46:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:46:10,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:46:10,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944386515] [2021-11-22 14:46:10,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944386515] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:46:10,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937087923] [2021-11-22 14:46:10,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:46:10,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:46:10,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:46:10,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:46:10,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 14:46:11,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-22 14:46:11,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:46:11,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 14:46:11,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:46:11,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:46:11,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:46:11,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,301 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:11,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-11-22 14:46:11,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,396 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:11,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2021-11-22 14:46:11,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,498 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:11,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2021-11-22 14:46:11,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,753 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:11,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 71 [2021-11-22 14:46:11,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:11,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:11,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 83 [2021-11-22 14:46:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,042 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:12,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 78 treesize of output 95 [2021-11-22 14:46:12,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,180 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:12,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 110 [2021-11-22 14:46:12,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:46:12,355 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:46:12,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 102 treesize of output 125 [2021-11-22 14:46:12,968 INFO L354 Elim1Store]: treesize reduction 460, result has 0.2 percent of original size [2021-11-22 14:46:12,968 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 10 new quantified variables, introduced 45 case distinctions, treesize of input 110 treesize of output 46 [2021-11-22 14:46:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-22 14:46:13,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:46:28,569 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_136| Int)) (or (<= (select (let ((.cse0 (* |v_ULTIMATE.start_main_~i~0#1_136| 20))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_136| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse2 (div c_~CELLCOUNT~0 5))) (let ((.cse1 (<= (+ |v_ULTIMATE.start_main_~i~0#1_136| 1) .cse2))) (and (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse1) (<= |v_ULTIMATE.start_main_~i~0#1_136| .cse2) (or .cse1 (< c_~CELLCOUNT~0 0))))))) is different from false [2021-11-22 14:47:13,486 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 68 treesize of output 66 [2021-11-22 14:47:13,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 200 [2021-11-22 14:47:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 1 not checked. [2021-11-22 14:47:15,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937087923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:47:15,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:47:15,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 15] total 44 [2021-11-22 14:47:15,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153051411] [2021-11-22 14:47:15,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:47:15,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-22 14:47:15,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:47:15,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-22 14:47:15,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1515, Unknown=52, NotChecked=82, Total=1892 [2021-11-22 14:47:15,924 INFO L87 Difference]: Start difference. First operand 452 states and 539 transitions. Second operand has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:47:51,066 WARN L227 SmtUtils]: Spent 27.76s on a formula simplification. DAG size of input: 72 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 14:48:49,640 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 20)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 16))) (.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse5 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6)) (.cse4 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)))) (and (<= 3 |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (= (select .cse0 .cse1) .cse2) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse3)) 0) (= |c_ULTIMATE.start_main_~CCCELVOL4~0#1| .cse2) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= .cse4 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= (select (store .cse0 .cse1 |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) .cse5) 0) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 8))) 0) (< 3 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 4)) 0) (= 0 (select .cse0 .cse5)) (= .cse4 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 12)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_136| Int)) (or (<= (select (let ((.cse7 (* |v_ULTIMATE.start_main_~i~0#1_136| 20))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse7) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse7 (- 8)) 0)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_136| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse9 (div c_~CELLCOUNT~0 5))) (let ((.cse8 (<= (+ |v_ULTIMATE.start_main_~i~0#1_136| 1) .cse9))) (and (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse8) (<= |v_ULTIMATE.start_main_~i~0#1_136| .cse9) (or .cse8 (< c_~CELLCOUNT~0 0)))))))))) is different from false [2021-11-22 14:48:50,584 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse12 (* |c_ULTIMATE.start_main_~i~0#1| 20)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse12 (- 16))) (.cse7 (mod c_~CELLCOUNT~0 5)) (.cse4 (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|)) (.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse8 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse12))) (and (<= 3 |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (= (select .cse0 .cse1) .cse2) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse3)) 0) (or (< .cse4 |c_ULTIMATE.start_main_~MINVAL~0#1|) (let ((.cse5 (div c_~CELLCOUNT~0 5))) (let ((.cse6 (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) .cse5))) (and (<= |c_ULTIMATE.start_main_~i~0#1| .cse5) (or .cse6 (< c_~CELLCOUNT~0 0)) (or (not (= .cse7 0)) .cse6))))) (= |c_ULTIMATE.start_main_~CCCELVOL4~0#1| .cse2) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= (select (store .cse0 .cse1 |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) .cse8) 0) (< (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= .cse7 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= .cse4 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 4)) 0) (= 0 (select .cse0 .cse8)) (forall ((|v_ULTIMATE.start_main_~i~0#1_136| Int)) (or (<= (select (let ((.cse9 (* |v_ULTIMATE.start_main_~i~0#1_136| 20))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse9) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse9 (- 8)) 0)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_136| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse11 (div c_~CELLCOUNT~0 5))) (let ((.cse10 (<= (+ |v_ULTIMATE.start_main_~i~0#1_136| 1) .cse11))) (and (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse10) (<= |v_ULTIMATE.start_main_~i~0#1_136| .cse11) (or .cse10 (< c_~CELLCOUNT~0 0)))))))))) is different from false [2021-11-22 14:48:51,863 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 16))) (.cse2 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (= (select .cse0 .cse1) (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= (select (store .cse0 .cse1 |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) .cse2) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 4))) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_136| Int)) (or (<= (select (let ((.cse4 (* |v_ULTIMATE.start_main_~i~0#1_136| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 8)) 0)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_136| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse6 (div c_~CELLCOUNT~0 5))) (let ((.cse5 (<= (+ |v_ULTIMATE.start_main_~i~0#1_136| 1) .cse6))) (and (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse5) (<= |v_ULTIMATE.start_main_~i~0#1_136| .cse6) (or .cse5 (< c_~CELLCOUNT~0 0))))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8))) 0) (< 3 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= 0 (select .cse0 .cse2)) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 12))))))) is different from false [2021-11-22 14:48:52,808 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (or (< (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~MINVAL~0#1|) (let ((.cse1 (div c_~CELLCOUNT~0 5))) (let ((.cse2 (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) .cse1))) (and (<= |c_ULTIMATE.start_main_~i~0#1| .cse1) (or .cse2 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse2))))) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (select (store .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 16)) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3))) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_136| Int)) (or (<= (select (let ((.cse4 (* |v_ULTIMATE.start_main_~i~0#1_136| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 8)) 0)) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_136| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse6 (div c_~CELLCOUNT~0 5))) (let ((.cse5 (<= (+ |v_ULTIMATE.start_main_~i~0#1_136| 1) .cse6))) (and (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse5) (<= |v_ULTIMATE.start_main_~i~0#1_136| .cse6) (or .cse5 (< c_~CELLCOUNT~0 0))))))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-11-22 14:51:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:51:11,960 INFO L93 Difference]: Finished difference Result 1018 states and 1189 transitions. [2021-11-22 14:51:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2021-11-22 14:51:11,961 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 14:51:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:51:11,965 INFO L225 Difference]: With dead ends: 1018 [2021-11-22 14:51:11,965 INFO L226 Difference]: Without dead ends: 936 [2021-11-22 14:51:11,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 194 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 13620 ImplicationChecksByTransitivity, 294.7s TimeCoverageRelationStatistics Valid=3157, Invalid=32941, Unknown=212, NotChecked=1910, Total=38220 [2021-11-22 14:51:11,971 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 364 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 4007 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 5063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 4007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 471 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:51:11,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 640 Invalid, 5063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 4007 Invalid, 0 Unknown, 471 Unchecked, 4.1s Time] [2021-11-22 14:51:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-11-22 14:51:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 489. [2021-11-22 14:51:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.194672131147541) internal successors, (583), 488 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 583 transitions. [2021-11-22 14:51:12,036 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 583 transitions. Word has length 57 [2021-11-22 14:51:12,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:51:12,036 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 583 transitions. [2021-11-22 14:51:12,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 583 transitions. [2021-11-22 14:51:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 14:51:12,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:51:12,039 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:51:12,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 14:51:12,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-22 14:51:12,243 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:51:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:51:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash -197389365, now seen corresponding path program 6 times [2021-11-22 14:51:12,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:51:12,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119265579] [2021-11-22 14:51:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:51:12,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:51:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:51:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:12,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:51:12,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119265579] [2021-11-22 14:51:12,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119265579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:51:12,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669187006] [2021-11-22 14:51:12,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 14:51:12,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:51:12,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:51:12,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:51:12,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 14:51:12,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-22 14:51:12,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:51:12,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-22 14:51:12,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:51:12,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:51:12,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:12,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:51:13,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:51:13,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-11-22 14:51:13,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,127 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:51:13,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2021-11-22 14:51:13,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,330 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:51:13,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2021-11-22 14:51:13,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,452 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:51:13,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 73 [2021-11-22 14:51:13,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,594 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:51:13,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 80 treesize of output 88 [2021-11-22 14:51:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,758 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:51:13,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 100 [2021-11-22 14:51:13,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:51:13,918 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:51:13,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 103 [2021-11-22 14:51:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:16,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:51:17,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 91 [2021-11-22 14:51:17,659 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 14:51:17,659 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 3033 treesize of output 2901 [2021-11-22 14:51:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:21,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669187006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:51:21,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:51:21,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 17] total 53 [2021-11-22 14:51:21,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784111006] [2021-11-22 14:51:21,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:51:21,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-22 14:51:21,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:51:21,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-22 14:51:21,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2469, Unknown=0, NotChecked=0, Total=2756 [2021-11-22 14:51:21,537 INFO L87 Difference]: Start difference. First operand 489 states and 583 transitions. Second operand has 53 states, 53 states have (on average 3.358490566037736) internal successors, (178), 53 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:51:41,461 INFO L93 Difference]: Finished difference Result 1565 states and 1787 transitions. [2021-11-22 14:51:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-22 14:51:41,462 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.358490566037736) internal successors, (178), 53 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 14:51:41,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:51:41,467 INFO L225 Difference]: With dead ends: 1565 [2021-11-22 14:51:41,467 INFO L226 Difference]: Without dead ends: 1210 [2021-11-22 14:51:41,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10265 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=3901, Invalid=27605, Unknown=0, NotChecked=0, Total=31506 [2021-11-22 14:51:41,473 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 860 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 4801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:51:41,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 832 Invalid, 4801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 4078 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-22 14:51:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-22 14:51:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 659. [2021-11-22 14:51:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.162613981762918) internal successors, (765), 658 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 765 transitions. [2021-11-22 14:51:41,582 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 765 transitions. Word has length 63 [2021-11-22 14:51:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:51:41,583 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 765 transitions. [2021-11-22 14:51:41,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.358490566037736) internal successors, (178), 53 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 765 transitions. [2021-11-22 14:51:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 14:51:41,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:51:41,586 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:51:41,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 14:51:41,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-22 14:51:41,811 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:51:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:51:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2060530293, now seen corresponding path program 2 times [2021-11-22 14:51:41,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:51:41,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564736060] [2021-11-22 14:51:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:51:41,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:51:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:51:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:42,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:51:42,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564736060] [2021-11-22 14:51:42,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564736060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:51:42,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536282830] [2021-11-22 14:51:42,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:51:42,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:51:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:51:42,219 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:51:42,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 14:51:42,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:51:42,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:51:42,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 14:51:42,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:51:42,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:51:42,539 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:51:42,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:51:42,556 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:51:42,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:51:42,578 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:51:42,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:51:43,300 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 14:51:43,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 25 [2021-11-22 14:51:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:43,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:51:43,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:51:43,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2021-11-22 14:51:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:43,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536282830] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:51:43,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:51:43,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 42 [2021-11-22 14:51:43,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592411071] [2021-11-22 14:51:43,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:51:43,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-22 14:51:43,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:51:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-22 14:51:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 14:51:43,956 INFO L87 Difference]: Start difference. First operand 659 states and 765 transitions. Second operand has 42 states, 42 states have (on average 4.214285714285714) internal successors, (177), 42 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:51:53,816 INFO L93 Difference]: Finished difference Result 1778 states and 2093 transitions. [2021-11-22 14:51:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2021-11-22 14:51:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.214285714285714) internal successors, (177), 42 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 14:51:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:51:53,825 INFO L225 Difference]: With dead ends: 1778 [2021-11-22 14:51:53,825 INFO L226 Difference]: Without dead ends: 1746 [2021-11-22 14:51:53,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13891 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3800, Invalid=34420, Unknown=0, NotChecked=0, Total=38220 [2021-11-22 14:51:53,830 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 722 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 1203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 4176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1203 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:51:53,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 1105 Invalid, 4176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1203 Valid, 2973 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-22 14:51:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2021-11-22 14:51:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 579. [2021-11-22 14:51:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.1643598615916955) internal successors, (673), 578 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 673 transitions. [2021-11-22 14:51:53,937 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 673 transitions. Word has length 63 [2021-11-22 14:51:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:51:53,938 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 673 transitions. [2021-11-22 14:51:53,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.214285714285714) internal successors, (177), 42 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:51:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 673 transitions. [2021-11-22 14:51:53,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 14:51:53,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:51:53,941 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:51:53,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 14:51:54,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:51:54,167 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:51:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:51:54,168 INFO L85 PathProgramCache]: Analyzing trace with hash -632220725, now seen corresponding path program 2 times [2021-11-22 14:51:54,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:51:54,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940825038] [2021-11-22 14:51:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:51:54,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:51:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:51:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:54,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:51:54,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940825038] [2021-11-22 14:51:54,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940825038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:51:54,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697746632] [2021-11-22 14:51:54,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:51:54,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:51:54,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:51:54,487 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:51:54,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 14:51:54,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:51:54,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:51:54,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 14:51:54,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:51:54,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:51:54,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:51:54,663 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:51:54,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-22 14:51:54,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:51:54,713 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:51:54,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-22 14:51:54,792 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-22 14:51:54,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 49 [2021-11-22 14:51:56,105 INFO L354 Elim1Store]: treesize reduction 97, result has 3.0 percent of original size [2021-11-22 14:51:56,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 32 [2021-11-22 14:51:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:56,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:51:56,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:51:56,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:51:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:51:56,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697746632] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:51:56,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:51:56,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 14] total 26 [2021-11-22 14:51:56,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250190975] [2021-11-22 14:51:56,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:51:56,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-22 14:51:56,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:51:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-22 14:51:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2021-11-22 14:51:56,416 INFO L87 Difference]: Start difference. First operand 579 states and 673 transitions. Second operand has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:00,310 INFO L93 Difference]: Finished difference Result 994 states and 1145 transitions. [2021-11-22 14:52:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-11-22 14:52:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 14:52:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:00,315 INFO L225 Difference]: With dead ends: 994 [2021-11-22 14:52:00,315 INFO L226 Difference]: Without dead ends: 992 [2021-11-22 14:52:00,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 122 SyntacticMatches, 12 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6673 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1580, Invalid=15712, Unknown=0, NotChecked=0, Total=17292 [2021-11-22 14:52:00,318 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 109 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 705 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:00,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 437 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2117 Invalid, 0 Unknown, 705 Unchecked, 1.6s Time] [2021-11-22 14:52:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-22 14:52:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 597. [2021-11-22 14:52:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.162751677852349) internal successors, (693), 596 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 693 transitions. [2021-11-22 14:52:00,437 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 693 transitions. Word has length 63 [2021-11-22 14:52:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:00,437 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 693 transitions. [2021-11-22 14:52:00,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 693 transitions. [2021-11-22 14:52:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 14:52:00,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:00,440 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:00,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 14:52:00,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:00,655 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1025247735, now seen corresponding path program 3 times [2021-11-22 14:52:00,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:00,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118069147] [2021-11-22 14:52:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:00,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:00,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:00,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118069147] [2021-11-22 14:52:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118069147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:52:00,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566008356] [2021-11-22 14:52:00,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:52:00,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:00,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:00,939 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:00,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 14:52:01,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-22 14:52:01,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:52:01,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 14:52:01,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:01,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:52:01,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:52:01,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,378 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:01,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-11-22 14:52:01,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:01,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 58 [2021-11-22 14:52:01,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,633 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:01,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2021-11-22 14:52:01,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:01,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 71 [2021-11-22 14:52:01,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:01,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:01,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 86 [2021-11-22 14:52:02,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,153 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:02,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 98 [2021-11-22 14:52:02,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,293 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:02,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 93 treesize of output 113 [2021-11-22 14:52:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:02,472 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:02,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 128 [2021-11-22 14:52:03,092 INFO L354 Elim1Store]: treesize reduction 460, result has 0.2 percent of original size [2021-11-22 14:52:03,093 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 10 new quantified variables, introduced 45 case distinctions, treesize of input 113 treesize of output 49 [2021-11-22 14:52:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-22 14:52:03,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:52:22,528 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse0 (div c_~CELLCOUNT~0 5))) (let ((.cse1 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse0))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse0) (or .cse1 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse1)))) (<= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|))) is different from false [2021-11-22 14:52:23,492 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse1 (div c_~CELLCOUNT~0 5))) (let ((.cse2 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse1))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse1) (or .cse2 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse2)))))) is different from false [2021-11-22 14:52:24,975 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse0 (div c_~CELLCOUNT~0 5))) (let ((.cse1 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse0))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse0) (or .cse1 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse1)))) (<= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 16)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|))) is different from false [2021-11-22 14:52:24,995 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 68 treesize of output 66 [2021-11-22 14:52:24,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 200 [2021-11-22 14:52:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 102 trivial. 3 not checked. [2021-11-22 14:52:25,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566008356] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:52:25,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:52:25,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 15] total 45 [2021-11-22 14:52:25,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094365016] [2021-11-22 14:52:25,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:52:25,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-22 14:52:25,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:25,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-22 14:52:25,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1489, Unknown=23, NotChecked=246, Total=1980 [2021-11-22 14:52:25,217 INFO L87 Difference]: Start difference. First operand 597 states and 693 transitions. Second operand has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:52:42,361 WARN L227 SmtUtils]: Spent 17.03s on a formula simplification. DAG size of input: 56 DAG size of output: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 14:53:23,175 WARN L227 SmtUtils]: Spent 10.79s on a formula simplification. DAG size of input: 93 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 14:53:24,181 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse4 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 16))) (.cse5 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (.cse7 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 12)))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12 .cse1)) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse2 (div c_~CELLCOUNT~0 5))) (let ((.cse3 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse2))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse2) (or .cse3 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse3)))) (<= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse0 .cse4) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse1)) 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= .cse5 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6 (- 8))) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select (store .cse0 .cse7 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) .cse4) 0) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse6))) (= .cse5 (select .cse0 .cse7))))) is different from false [2021-11-22 14:53:25,098 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 16))) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 12)))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse0 .cse1) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 4))) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse3 (div c_~CELLCOUNT~0 5))) (let ((.cse4 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse3))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse3) (or .cse4 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse4)))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8))) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select (store .cse0 .cse5 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) .cse1) 0) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) (select .cse0 .cse5))))) is different from false [2021-11-22 14:53:30,086 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse4 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (.cse3 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12 .cse1)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 16))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse1)) 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= .cse3 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16 .cse1)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (< .cse4 |c_ULTIMATE.start_main_~MINVAL~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (let ((.cse5 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse5 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse5 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse6 (div c_~CELLCOUNT~0 5))) (let ((.cse7 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse6))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse6) (or .cse7 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse7)))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 24)) 0) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= .cse4 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 4)) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2))) (= .cse3 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 12))))))) is different from false [2021-11-22 14:53:31,134 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (let ((.cse0 (div c_~CELLCOUNT~0 5))) (let ((.cse1 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse0))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse0) (or .cse1 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse1)))) (<= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|))) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 16))) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8))) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= 0 (select .cse2 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3))) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 12)))))) is different from false [2021-11-22 14:53:32,244 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (.cse5 (mod c_~CELLCOUNT~0 5))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12 .cse1)) 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (< (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16 .cse1)) 0) (< .cse2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse3 (div c_~CELLCOUNT~0 5))) (let ((.cse4 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse3))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse3) (or .cse4 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse4)))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (< 1 c_~CELLCOUNT~0) (<= .cse5 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 24)) 0) |c_ULTIMATE.start_main_#t~short9#1| (= .cse2 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 4)) 0) (or (<= (select (store .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse6 (div c_~CELLCOUNT~0 5))) (let ((.cse7 (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) .cse6))) (and (<= |c_ULTIMATE.start_main_~i~0#1| .cse6) (or .cse7 (< c_~CELLCOUNT~0 0)) (or (not (= .cse5 0)) .cse7)))))))) is different from false [2021-11-22 14:53:33,128 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 16))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 4))) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse2 (div c_~CELLCOUNT~0 5))) (let ((.cse3 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse2))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse2) (or .cse3 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse3)))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8))) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12)))))) is different from false [2021-11-22 14:53:38,987 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse3 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 16))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse2)) 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= .cse3 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse5 (div c_~CELLCOUNT~0 5))) (let ((.cse6 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse5))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse5) (or .cse6 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse6)))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 24)) 0) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 4)) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (= .cse3 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12))))))) is different from false [2021-11-22 14:53:41,406 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 16))) 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= .cse2 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse4 (div c_~CELLCOUNT~0 5))) (let ((.cse5 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse4))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse4) (or .cse5 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse5)))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 24)) 0) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (= .cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12))))))) is different from false [2021-11-22 14:53:43,050 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8))) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 4)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 16))) 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) 0) (= .cse2 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_202| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_202| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (select (store (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_202| 20)) 0) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (let ((.cse4 (div c_~CELLCOUNT~0 5))) (let ((.cse5 (<= (+ |v_ULTIMATE.start_main_~i~0#1_202| 1) .cse4))) (and (<= |v_ULTIMATE.start_main_~i~0#1_202| .cse4) (or .cse5 (< c_~CELLCOUNT~0 0)) (or (not (= (mod c_~CELLCOUNT~0 5) 0)) .cse5)))))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 1 c_~CELLCOUNT~0) (<= (mod c_~CELLCOUNT~0 5) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 24)) 0) (= (select .cse0 |c_ULTIMATE.start_main_~#volArray~0#1.offset|) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (= .cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12))))))) is different from false [2021-11-22 14:53:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:45,250 INFO L93 Difference]: Finished difference Result 1507 states and 1733 transitions. [2021-11-22 14:53:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2021-11-22 14:53:45,250 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 14:53:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:45,255 INFO L225 Difference]: With dead ends: 1507 [2021-11-22 14:53:45,255 INFO L226 Difference]: Without dead ends: 1347 [2021-11-22 14:53:45,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 100 SyntacticMatches, 14 SemanticMatches, 231 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 18810 ImplicationChecksByTransitivity, 99.6s TimeCoverageRelationStatistics Valid=4285, Invalid=44313, Unknown=70, NotChecked=5388, Total=54056 [2021-11-22 14:53:45,261 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 550 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1528 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:53:45,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 916 Invalid, 5503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 3441 Invalid, 0 Unknown, 1528 Unchecked, 2.7s Time] [2021-11-22 14:53:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-11-22 14:53:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 645. [2021-11-22 14:53:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.1677018633540373) internal successors, (752), 644 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 752 transitions. [2021-11-22 14:53:45,359 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 752 transitions. Word has length 63 [2021-11-22 14:53:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:45,360 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 752 transitions. [2021-11-22 14:53:45,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 752 transitions. [2021-11-22 14:53:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:53:45,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:45,362 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:45,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 14:53:45,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:53:45,573 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1926028989, now seen corresponding path program 4 times [2021-11-22 14:53:45,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:45,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743188177] [2021-11-22 14:53:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:45,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 1 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:45,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:45,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743188177] [2021-11-22 14:53:45,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743188177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:53:45,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066715789] [2021-11-22 14:53:45,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:53:45,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:53:45,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:53:45,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:53:45,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 14:53:45,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:53:45,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:53:45,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-22 14:53:45,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:53:45,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:53:46,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-11-22 14:53:46,021 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:53:46,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-11-22 14:53:46,094 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-22 14:53:46,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-22 14:53:46,164 INFO L354 Elim1Store]: treesize reduction 177, result has 17.3 percent of original size [2021-11-22 14:53:46,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 58 [2021-11-22 14:53:46,258 INFO L354 Elim1Store]: treesize reduction 272, result has 15.3 percent of original size [2021-11-22 14:53:46,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 73 [2021-11-22 14:53:46,448 INFO L354 Elim1Store]: treesize reduction 385, result has 13.7 percent of original size [2021-11-22 14:53:46,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 99 [2021-11-22 14:53:46,588 INFO L354 Elim1Store]: treesize reduction 516, result has 12.4 percent of original size [2021-11-22 14:53:46,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 111 [2021-11-22 14:53:46,751 INFO L354 Elim1Store]: treesize reduction 665, result has 11.3 percent of original size [2021-11-22 14:53:46,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 123 [2021-11-22 14:53:46,951 INFO L354 Elim1Store]: treesize reduction 832, result has 10.4 percent of original size [2021-11-22 14:53:46,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 118 treesize of output 138 [2021-11-22 14:53:47,185 INFO L354 Elim1Store]: treesize reduction 1017, result has 9.7 percent of original size [2021-11-22 14:53:47,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 130 treesize of output 153 [2021-11-22 14:53:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-22 14:53:47,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:53:48,189 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) is different from false [2021-11-22 14:53:48,737 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) is different from false [2021-11-22 14:53:49,360 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) is different from false [2021-11-22 14:53:49,847 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-22 14:53:50,392 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-22 14:53:50,989 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) is different from false [2021-11-22 14:53:51,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-22 14:53:51,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2021-11-22 14:53:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 12 not checked. [2021-11-22 14:53:51,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066715789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:53:51,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:53:51,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 20] total 33 [2021-11-22 14:53:51,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568361755] [2021-11-22 14:53:51,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:53:51,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-22 14:53:51,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-22 14:53:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=607, Unknown=6, NotChecked=330, Total=1056 [2021-11-22 14:53:51,060 INFO L87 Difference]: Start difference. First operand 645 states and 752 transitions. Second operand has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 33 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:53:52,643 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse2)) 0) (= |c_ULTIMATE.start_main_~CCCELVOL3~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 12)))) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 4)) 0)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 16))) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 4)) 0) (= 0 (select .cse1 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3))))) is different from false [2021-11-22 14:53:53,744 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 0) (= |c_ULTIMATE.start_main_~CCCELVOL3~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 12)))) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 4)) 0)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 16))) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= 0 (select .cse1 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2))))) is different from false [2021-11-22 14:53:54,745 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (= |c_ULTIMATE.start_main_~CCCELVOL3~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12)))) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 16))) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8))) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))))) is different from false [2021-11-22 14:53:55,732 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (= |c_ULTIMATE.start_main_~CCCELVOL3~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 16))) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 4))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8))) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)))) is different from false [2021-11-22 14:53:56,310 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_206| 20))) (and (<= |v_ULTIMATE.start_main_~i~0#1_206| 2) (= (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1)) 0) (= |c_ULTIMATE.start_main_~CCCELVOL4~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 16) .cse1))) (= |c_ULTIMATE.start_main_~CCCELVOL3~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12)))) (<= 2 |v_ULTIMATE.start_main_~i~0#1_206|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 4))) 0) (<= (+ |v_ULTIMATE.start_main_~i~0#1_206| 1) |c_ULTIMATE.start_main_~i~0#1|)))) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) is different from false [2021-11-22 14:53:57,583 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 4)) 0)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) (= 0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20)))) (exists ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 20)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (* |v_ULTIMATE.start_main_~i~0#1_206| 20))) (and (<= |v_ULTIMATE.start_main_~i~0#1_206| 2) (= (select .cse2 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3)) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 12))) (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 12)))) (<= 2 |v_ULTIMATE.start_main_~i~0#1_206|) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8))) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 16))) (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 16) .cse3))) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 4))) 0) (<= (+ |v_ULTIMATE.start_main_~i~0#1_206| 1) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-11-22 14:53:58,630 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8))) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1))) (exists ((|v_ULTIMATE.start_main_~i~0#1_206| Int)) (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 20)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (* |v_ULTIMATE.start_main_~i~0#1_206| 20))) (and (<= |v_ULTIMATE.start_main_~i~0#1_206| 2) (= (select .cse2 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3)) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 12))) (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 12)))) (<= 2 |v_ULTIMATE.start_main_~i~0#1_206|) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8))) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 16))) (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 16) .cse3))) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 4))) 0) (<= (+ |v_ULTIMATE.start_main_~i~0#1_206| 1) |c_ULTIMATE.start_main_~i~0#1|)))))) is different from false [2021-11-22 14:53:59,662 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_206| Int)) (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_206| 20)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (* |ULTIMATE.start_main_~i~0#1| 20))) (and (<= |v_ULTIMATE.start_main_~i~0#1_206| 2) (= (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 4))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12))) (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 12)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8))) 0) (<= 2 |v_ULTIMATE.start_main_~i~0#1_206|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 16))) (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 16) .cse1))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 4))) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_206| 1) |ULTIMATE.start_main_~i~0#1|)))) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) is different from false [2021-11-22 14:54:00,228 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_206| Int)) (let ((.cse1 (* |v_ULTIMATE.start_main_~i~0#1_206| 20)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (* |ULTIMATE.start_main_~i~0#1| 20))) (and (<= |v_ULTIMATE.start_main_~i~0#1_206| 2) (= (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1)) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 4))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 12))) (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 12)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 8))) 0) (<= 2 |v_ULTIMATE.start_main_~i~0#1_206|) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8))) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2 (- 16))) (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 16) .cse1))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 4))) 0) (= 0 (select .cse0 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse2))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_206| 1) |ULTIMATE.start_main_~i~0#1|)))) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) is different from false [2021-11-22 14:54:01,425 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse1 (- 4)) 0)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 16)) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0)) is different from false [2021-11-22 14:54:02,422 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 16)) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_214| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_214| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) is different from false [2021-11-22 14:54:03,331 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_215| Int)) (or (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_215| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (< |v_ULTIMATE.start_main_~i~0#1_215| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 16)) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) is different from false [2021-11-22 14:54:03,869 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 16)) |c_ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~CCCELVOL4~0#1| Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 20) (- 16)) |ULTIMATE.start_main_~CCCELVOL4~0#1|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) 0))) is different from false [2021-11-22 14:54:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:04,288 INFO L93 Difference]: Finished difference Result 1270 states and 1470 transitions. [2021-11-22 14:54:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-22 14:54:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 33 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 14:54:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:04,293 INFO L225 Difference]: With dead ends: 1270 [2021-11-22 14:54:04,293 INFO L226 Difference]: Without dead ends: 1219 [2021-11-22 14:54:04,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 105 SyntacticMatches, 19 SemanticMatches, 109 ConstructedPredicates, 19 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=720, Invalid=7709, Unknown=19, NotChecked=3762, Total=12210 [2021-11-22 14:54:04,295 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 84 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1243 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:04,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 418 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1298 Invalid, 0 Unknown, 1243 Unchecked, 0.8s Time] [2021-11-22 14:54:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-11-22 14:54:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 666. [2021-11-22 14:54:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.1699248120300751) internal successors, (778), 665 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 778 transitions. [2021-11-22 14:54:04,385 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 778 transitions. Word has length 64 [2021-11-22 14:54:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:04,385 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 778 transitions. [2021-11-22 14:54:04,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 33 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 778 transitions. [2021-11-22 14:54:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:54:04,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:04,388 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:04,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 14:54:04,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-22 14:54:04,603 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1502382267, now seen corresponding path program 1 times [2021-11-22 14:54:04,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:04,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761745971] [2021-11-22 14:54:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:04,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-22 14:54:04,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:04,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761745971] [2021-11-22 14:54:04,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761745971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:04,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:04,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:04,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179949908] [2021-11-22 14:54:04,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:04,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:04,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:04,635 INFO L87 Difference]: Start difference. First operand 666 states and 778 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:04,772 INFO L93 Difference]: Finished difference Result 1200 states and 1409 transitions. [2021-11-22 14:54:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:04,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 14:54:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:04,776 INFO L225 Difference]: With dead ends: 1200 [2021-11-22 14:54:04,777 INFO L226 Difference]: Without dead ends: 752 [2021-11-22 14:54:04,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:04,781 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:04,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 41 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:54:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-22 14:54:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 628. [2021-11-22 14:54:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.1403508771929824) internal successors, (715), 627 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 715 transitions. [2021-11-22 14:54:04,875 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 715 transitions. Word has length 64 [2021-11-22 14:54:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:04,875 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 715 transitions. [2021-11-22 14:54:04,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 715 transitions. [2021-11-22 14:54:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 14:54:04,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:04,878 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:04,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 14:54:04,878 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:04,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:04,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1179299108, now seen corresponding path program 1 times [2021-11-22 14:54:04,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:04,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066948230] [2021-11-22 14:54:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:04,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-22 14:54:04,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:04,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066948230] [2021-11-22 14:54:04,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066948230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:54:04,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:54:04,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:54:04,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520340845] [2021-11-22 14:54:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:54:04,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:54:04,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:54:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:04,905 INFO L87 Difference]: Start difference. First operand 628 states and 715 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:05,019 INFO L93 Difference]: Finished difference Result 777 states and 884 transitions. [2021-11-22 14:54:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:54:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 14:54:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:05,022 INFO L225 Difference]: With dead ends: 777 [2021-11-22 14:54:05,023 INFO L226 Difference]: Without dead ends: 578 [2021-11-22 14:54:05,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:54:05,028 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:05,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:54:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-22 14:54:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 525. [2021-11-22 14:54:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.1259541984732824) internal successors, (590), 524 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 590 transitions. [2021-11-22 14:54:05,108 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 590 transitions. Word has length 69 [2021-11-22 14:54:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:05,109 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 590 transitions. [2021-11-22 14:54:05,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 590 transitions. [2021-11-22 14:54:05,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 14:54:05,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:05,111 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:05,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 14:54:05,111 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:05,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1087082078, now seen corresponding path program 3 times [2021-11-22 14:54:05,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:05,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023474956] [2021-11-22 14:54:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:05,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:05,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:05,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023474956] [2021-11-22 14:54:05,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023474956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:54:05,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089107289] [2021-11-22 14:54:05,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:54:05,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:05,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:05,422 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:54:05,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 14:54:05,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-22 14:54:05,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:54:05,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-22 14:54:05,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:54:05,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:54:05,830 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:54:05,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:54:05,847 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:54:05,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:54:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:06,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:54:07,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-22 14:54:07,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-11-22 14:54:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:07,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089107289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:54:07,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:54:07,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 19] total 50 [2021-11-22 14:54:07,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122020400] [2021-11-22 14:54:07,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:54:07,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-22 14:54:07,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-22 14:54:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2247, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 14:54:07,537 INFO L87 Difference]: Start difference. First operand 525 states and 590 transitions. Second operand has 50 states, 50 states have (on average 3.98) internal successors, (199), 50 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:25,236 INFO L93 Difference]: Finished difference Result 1556 states and 1731 transitions. [2021-11-22 14:54:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2021-11-22 14:54:25,236 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.98) internal successors, (199), 50 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 14:54:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:25,241 INFO L225 Difference]: With dead ends: 1556 [2021-11-22 14:54:25,242 INFO L226 Difference]: Without dead ends: 1546 [2021-11-22 14:54:25,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 103 SyntacticMatches, 5 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27512 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=7189, Invalid=65441, Unknown=0, NotChecked=0, Total=72630 [2021-11-22 14:54:25,245 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 1253 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 1313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 5126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1313 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:25,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 684 Invalid, 5126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1313 Valid, 3813 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-22 14:54:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-11-22 14:54:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 593. [2021-11-22 14:54:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.125) internal successors, (666), 592 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 666 transitions. [2021-11-22 14:54:25,320 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 666 transitions. Word has length 69 [2021-11-22 14:54:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:25,320 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 666 transitions. [2021-11-22 14:54:25,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.98) internal successors, (199), 50 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 666 transitions. [2021-11-22 14:54:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 14:54:25,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:25,322 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:25,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 14:54:25,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:25,546 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash -818215532, now seen corresponding path program 4 times [2021-11-22 14:54:25,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:25,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775334795] [2021-11-22 14:54:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:25,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:25,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:25,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775334795] [2021-11-22 14:54:25,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775334795] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:54:25,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595122781] [2021-11-22 14:54:25,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:54:25,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:25,844 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:54:25,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 14:54:25,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:54:25,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:54:25,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 14:54:25,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:54:26,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:54:26,040 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:54:26,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:54:26,087 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-11-22 14:54:26,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-22 14:54:26,149 INFO L354 Elim1Store]: treesize reduction 177, result has 17.3 percent of original size [2021-11-22 14:54:26,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 58 [2021-11-22 14:54:26,230 INFO L354 Elim1Store]: treesize reduction 272, result has 15.3 percent of original size [2021-11-22 14:54:26,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 73 [2021-11-22 14:54:26,391 INFO L354 Elim1Store]: treesize reduction 280, result has 14.1 percent of original size [2021-11-22 14:54:26,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-22 14:54:26,512 INFO L354 Elim1Store]: treesize reduction 396, result has 12.8 percent of original size [2021-11-22 14:54:26,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 88 [2021-11-22 14:54:26,685 INFO L354 Elim1Store]: treesize reduction 530, result has 11.7 percent of original size [2021-11-22 14:54:26,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 83 treesize of output 100 [2021-11-22 14:54:26,875 INFO L354 Elim1Store]: treesize reduction 682, result has 10.7 percent of original size [2021-11-22 14:54:26,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 95 treesize of output 115 [2021-11-22 14:54:27,097 INFO L354 Elim1Store]: treesize reduction 852, result has 9.9 percent of original size [2021-11-22 14:54:27,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 110 treesize of output 133 [2021-11-22 14:54:28,799 INFO L354 Elim1Store]: treesize reduction 675, result has 0.1 percent of original size [2021-11-22 14:54:28,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 130 treesize of output 49 [2021-11-22 14:54:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 94 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:54:28,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:54:29,821 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_255| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_255| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_255| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-22 14:54:30,400 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_255| Int)) (or (< (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_255| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_255| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-22 14:54:31,084 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_255| Int)) (or (< (select (store (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 20))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse0 (- 4)) 0)) (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_255| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_255| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-22 14:54:31,276 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 55 treesize of output 53 [2021-11-22 14:54:31,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6925 treesize of output 6893 [2021-11-22 14:54:32,181 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 14:54:32,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 14:54:32,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-22 14:54:32,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879971804] [2021-11-22 14:54:32,181 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 14:54:32,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 14:54:32,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:32,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 14:54:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1962, Unknown=3, NotChecked=282, Total=2550 [2021-11-22 14:54:32,183 INFO L87 Difference]: Start difference. First operand 593 states and 666 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:35,162 INFO L93 Difference]: Finished difference Result 862 states and 959 transitions. [2021-11-22 14:54:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-22 14:54:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-22 14:54:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:35,165 INFO L225 Difference]: With dead ends: 862 [2021-11-22 14:54:35,166 INFO L226 Difference]: Without dead ends: 860 [2021-11-22 14:54:35,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 87 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 4716 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1163, Invalid=12652, Unknown=3, NotChecked=702, Total=14520 [2021-11-22 14:54:35,167 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 164 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:35,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 327 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 14:54:35,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-22 14:54:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 553. [2021-11-22 14:54:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.1213768115942029) internal successors, (619), 552 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 619 transitions. [2021-11-22 14:54:35,257 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 619 transitions. Word has length 70 [2021-11-22 14:54:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:35,258 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 619 transitions. [2021-11-22 14:54:35,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 619 transitions. [2021-11-22 14:54:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:54:35,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:35,260 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:35,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-22 14:54:35,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:35,487 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 496706801, now seen corresponding path program 4 times [2021-11-22 14:54:35,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:35,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599570670] [2021-11-22 14:54:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:35,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:35,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:35,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599570670] [2021-11-22 14:54:35,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599570670] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:54:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479648779] [2021-11-22 14:54:35,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:54:35,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:35,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:35,811 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:54:35,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-22 14:54:35,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:54:35,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:54:35,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 14:54:35,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:54:35,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-22 14:54:35,985 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:54:35,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:54:36,628 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 14:54:36,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-11-22 14:54:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:36,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:54:37,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:54:37,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:54:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:37,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479648779] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:54:37,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:54:37,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 42 [2021-11-22 14:54:37,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100934283] [2021-11-22 14:54:37,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:54:37,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-22 14:54:37,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:37,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-22 14:54:37,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1580, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 14:54:37,052 INFO L87 Difference]: Start difference. First operand 553 states and 619 transitions. Second operand has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:54:49,763 INFO L93 Difference]: Finished difference Result 1604 states and 1754 transitions. [2021-11-22 14:54:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2021-11-22 14:54:49,763 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:54:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:54:49,768 INFO L225 Difference]: With dead ends: 1604 [2021-11-22 14:54:49,769 INFO L226 Difference]: Without dead ends: 1582 [2021-11-22 14:54:49,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34163 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=5890, Invalid=80840, Unknown=0, NotChecked=0, Total=86730 [2021-11-22 14:54:49,774 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 1463 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 1419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 5696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:54:49,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 1313 Invalid, 5696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1419 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-22 14:54:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2021-11-22 14:54:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 704. [2021-11-22 14:54:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.1223328591749644) internal successors, (789), 703 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 789 transitions. [2021-11-22 14:54:49,877 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 789 transitions. Word has length 75 [2021-11-22 14:54:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:54:49,877 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 789 transitions. [2021-11-22 14:54:49,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 789 transitions. [2021-11-22 14:54:49,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:54:49,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:54:49,879 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:54:49,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-22 14:54:50,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:50,103 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:54:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:54:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash -596856401, now seen corresponding path program 5 times [2021-11-22 14:54:50,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:54:50,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108468826] [2021-11-22 14:54:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:54:50,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:54:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:54:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:54:50,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:54:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108468826] [2021-11-22 14:54:50,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108468826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:54:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567717109] [2021-11-22 14:54:50,339 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 14:54:50,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:54:50,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:54:50,340 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:54:50,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-22 14:54:50,623 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-22 14:54:50,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:54:50,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 14:54:50,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:54:50,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:54:50,764 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-22 14:54:50,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-11-22 14:54:50,809 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-22 14:54:50,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-22 14:54:50,836 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-22 14:54:50,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-22 14:54:50,860 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-11-22 14:54:50,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-22 14:54:50,919 INFO L354 Elim1Store]: treesize reduction 162, result has 17.3 percent of original size [2021-11-22 14:54:50,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 58 [2021-11-22 14:54:54,918 INFO L354 Elim1Store]: treesize reduction 99, result has 1.0 percent of original size [2021-11-22 14:54:54,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 34 [2021-11-22 14:54:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 112 proven. 53 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-22 14:54:54,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:54:55,990 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_293| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_293| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-22 14:54:56,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-11-22 14:54:56,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2021-11-22 14:54:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 112 proven. 52 refuted. 0 times theorem prover too weak. 44 trivial. 1 not checked. [2021-11-22 14:54:56,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567717109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:54:56,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:54:56,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 14] total 42 [2021-11-22 14:54:56,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28014197] [2021-11-22 14:54:56,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:54:56,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-22 14:54:56,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:54:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-22 14:54:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1494, Unknown=2, NotChecked=78, Total=1722 [2021-11-22 14:54:56,168 INFO L87 Difference]: Start difference. First operand 704 states and 789 transitions. Second operand has 42 states, 42 states have (on average 4.142857142857143) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:54:57,054 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_293| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_293| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (< .cse0 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= .cse0 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4))) 0)))) is different from false [2021-11-22 14:54:57,544 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_293| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_293| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4))) 0)) is different from false [2021-11-22 14:54:58,053 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse3))) (.cse2 (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3)))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_293| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_293| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (< .cse0 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= .cse0 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4))) 0) (< .cse2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= .cse2 0)))) is different from false [2021-11-22 14:54:58,559 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (let ((.cse1 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_293| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_293| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4))) 0) (< .cse1 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= .cse1 0)))) is different from false [2021-11-22 14:54:59,089 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8 .cse4))) (.cse2 (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4))) (.cse3 (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 4)))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_293| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_293| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (< .cse0 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= .cse0 0) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= (select .cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4))) 0) (< .cse2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (< .cse3 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= .cse2 0) (= .cse3 0)))) is different from false [2021-11-22 14:54:59,599 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3))) (.cse2 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 4)))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 4) (* |v_ULTIMATE.start_main_~i~0#1_293| 20)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_293| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= 2 |c_ULTIMATE.start_main_~CCCELVOL5~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4))) 0) (< .cse1 |c_ULTIMATE.start_main_~MINVAL~0#1|) (< .cse2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= .cse1 0) (= .cse2 0)))) is different from false [2021-11-22 14:56:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:03,691 INFO L93 Difference]: Finished difference Result 1275 states and 1413 transitions. [2021-11-22 14:56:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-22 14:56:03,691 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.142857142857143) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:56:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:03,696 INFO L225 Difference]: With dead ends: 1275 [2021-11-22 14:56:03,696 INFO L226 Difference]: Without dead ends: 1145 [2021-11-22 14:56:03,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 131 SyntacticMatches, 9 SemanticMatches, 117 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 3852 ImplicationChecksByTransitivity, 70.9s TimeCoverageRelationStatistics Valid=1123, Invalid=11314, Unknown=23, NotChecked=1582, Total=14042 [2021-11-22 14:56:03,698 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 281 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 961 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:56:03,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 946 Invalid, 3401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2255 Invalid, 0 Unknown, 961 Unchecked, 1.2s Time] [2021-11-22 14:56:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-22 14:56:03,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 886. [2021-11-22 14:56:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.11864406779661) internal successors, (990), 885 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 990 transitions. [2021-11-22 14:56:03,840 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 990 transitions. Word has length 75 [2021-11-22 14:56:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:03,840 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 990 transitions. [2021-11-22 14:56:03,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.142857142857143) internal successors, (174), 42 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 990 transitions. [2021-11-22 14:56:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:56:03,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:03,843 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:03,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-22 14:56:04,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-22 14:56:04,067 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:56:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:04,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1106329491, now seen corresponding path program 6 times [2021-11-22 14:56:04,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:56:04,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765797520] [2021-11-22 14:56:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:04,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:56:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:04,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:56:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765797520] [2021-11-22 14:56:04,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765797520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:56:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989244768] [2021-11-22 14:56:04,316 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 14:56:04,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:56:04,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:56:04,319 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:56:04,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-22 14:56:04,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-22 14:56:04,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:56:04,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 14:56:04,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:56:04,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:56:04,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:04,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:56:04,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:04,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:04,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:04,936 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:56:04,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2021-11-22 14:56:04,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:04,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:04,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:56:05,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-22 14:56:05,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,034 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:56:05,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-22 14:56:05,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,061 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:56:05,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-22 14:56:05,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:56:05,150 INFO L354 Elim1Store]: treesize reduction 224, result has 16.1 percent of original size [2021-11-22 14:56:05,151 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 4 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 70 [2021-11-22 14:56:17,337 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-22 14:56:17,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 37 [2021-11-22 14:56:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 33 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-22 14:56:17,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:56:31,924 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_311| Int)) (or (<= (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 4)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_311| 20) (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_311| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-22 14:56:31,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-11-22 14:56:31,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 197 [2021-11-22 14:56:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 32 refuted. 0 times theorem prover too weak. 70 trivial. 1 not checked. [2021-11-22 14:56:32,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989244768] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:56:32,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:56:32,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 13] total 40 [2021-11-22 14:56:32,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658716831] [2021-11-22 14:56:32,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:56:32,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-22 14:56:32,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:56:32,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-22 14:56:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1320, Unknown=22, NotChecked=74, Total=1560 [2021-11-22 14:56:32,094 INFO L87 Difference]: Start difference. First operand 886 states and 990 transitions. Second operand has 40 states, 40 states have (on average 4.05) internal successors, (162), 40 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:56:38,883 WARN L227 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 43 DAG size of output: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 14:56:46,764 WARN L227 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 47 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 14:56:55,847 WARN L227 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 51 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 14:57:26,002 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (and (<= 3 |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse0 .cse1) 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) 0) (exists ((|ULTIMATE.start_main_~i~0#1| Int)) (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse3 (* |ULTIMATE.start_main_~i~0#1| 20))) (and (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 4))) 0) (= (select .cse2 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3 (- 8))) 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= 0 (select .cse2 (+ (- 20) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse3)))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_311| Int)) (or (<= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_311| 20) (- 8)) 0) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|) (< |v_ULTIMATE.start_main_~i~0#1_311| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (< 3 |c_ULTIMATE.start_main_~MINVAL~0#1|) |c_ULTIMATE.start_main_#t~short9#1| (<= (select (store .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 20) (- 8)) 0) .cse1) |c_ULTIMATE.start_main_~CCCELVOL2~0#1|))) is different from false [2021-11-22 14:57:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:56,910 INFO L93 Difference]: Finished difference Result 1632 states and 1794 transitions. [2021-11-22 14:57:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-22 14:57:56,911 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.05) internal successors, (162), 40 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:57:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:56,917 INFO L225 Difference]: With dead ends: 1632 [2021-11-22 14:57:56,917 INFO L226 Difference]: Without dead ends: 1520 [2021-11-22 14:57:56,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 136 SyntacticMatches, 10 SemanticMatches, 143 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7070 ImplicationChecksByTransitivity, 109.4s TimeCoverageRelationStatistics Valid=1788, Invalid=18487, Unknown=39, NotChecked=566, Total=20880 [2021-11-22 14:57:56,920 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 191 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 787 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:56,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 896 Invalid, 3534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2567 Invalid, 0 Unknown, 787 Unchecked, 1.5s Time] [2021-11-22 14:57:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-11-22 14:57:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 910. [2021-11-22 14:57:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.1144114411441144) internal successors, (1013), 909 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1013 transitions. [2021-11-22 14:57:57,078 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1013 transitions. Word has length 75 [2021-11-22 14:57:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:57,078 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 1013 transitions. [2021-11-22 14:57:57,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.05) internal successors, (162), 40 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1013 transitions. [2021-11-22 14:57:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:57:57,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:57,081 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:57,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:57,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-22 14:57:57,295 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash -192386581, now seen corresponding path program 5 times [2021-11-22 14:57:57,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:57,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791308354] [2021-11-22 14:57:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:57,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 88 proven. 111 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 14:57:57,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:57,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791308354] [2021-11-22 14:57:57,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791308354] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:57:57,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643966701] [2021-11-22 14:57:57,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 14:57:57,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:57,612 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:57,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-22 14:57:57,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-22 14:57:57,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:57,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 14:57:57,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:58,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:57:58,112 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:57:58,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 14:57:58,256 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:57:58,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-22 14:57:58,350 INFO L354 Elim1Store]: treesize reduction 147, result has 17.4 percent of original size [2021-11-22 14:57:58,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-11-22 14:57:58,469 INFO L354 Elim1Store]: treesize reduction 236, result has 15.4 percent of original size [2021-11-22 14:57:58,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-11-22 14:57:58,550 INFO L354 Elim1Store]: treesize reduction 236, result has 15.4 percent of original size [2021-11-22 14:57:58,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-11-22 14:57:58,694 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-22 14:57:58,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 70 [2021-11-22 14:57:59,460 INFO L354 Elim1Store]: treesize reduction 262, result has 1.1 percent of original size [2021-11-22 14:57:59,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 40 [2021-11-22 14:57:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 33 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-22 14:57:59,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:58:00,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-11-22 14:58:00,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2021-11-22 14:58:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 33 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-22 14:58:00,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643966701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:58:00,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:58:00,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 13] total 41 [2021-11-22 14:58:00,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333303467] [2021-11-22 14:58:00,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:58:00,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-22 14:58:00,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-22 14:58:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1401, Unknown=0, NotChecked=0, Total=1640 [2021-11-22 14:58:00,177 INFO L87 Difference]: Start difference. First operand 910 states and 1013 transitions. Second operand has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:05,598 INFO L93 Difference]: Finished difference Result 1210 states and 1351 transitions. [2021-11-22 14:58:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-22 14:58:05,599 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:58:05,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:05,603 INFO L225 Difference]: With dead ends: 1210 [2021-11-22 14:58:05,603 INFO L226 Difference]: Without dead ends: 1134 [2021-11-22 14:58:05,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 120 SyntacticMatches, 8 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4515 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2204, Invalid=11368, Unknown=0, NotChecked=0, Total=13572 [2021-11-22 14:58:05,605 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 675 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:05,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 544 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-22 14:58:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-22 14:58:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 860. [2021-11-22 14:58:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 859 states have (on average 1.1001164144353899) internal successors, (945), 859 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 945 transitions. [2021-11-22 14:58:05,728 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 945 transitions. Word has length 75 [2021-11-22 14:58:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:05,728 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 945 transitions. [2021-11-22 14:58:05,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 945 transitions. [2021-11-22 14:58:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:58:05,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:05,732 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:05,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-22 14:58:05,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-22 14:58:05,937 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:58:05,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1056383781, now seen corresponding path program 6 times [2021-11-22 14:58:05,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:05,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668335175] [2021-11-22 14:58:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:05,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:06,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:06,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668335175] [2021-11-22 14:58:06,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668335175] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:58:06,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026978927] [2021-11-22 14:58:06,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 14:58:06,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:58:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:58:06,189 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:58:06,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-22 14:58:06,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-22 14:58:06,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:58:06,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 14:58:06,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:58:06,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:58:06,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2021-11-22 14:58:06,504 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-11-22 14:58:06,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 63 [2021-11-22 14:58:07,689 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-22 14:58:07,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 29 [2021-11-22 14:58:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:07,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:58:07,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:58:07,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:58:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:07,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026978927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:58:07,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:58:07,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 29 [2021-11-22 14:58:07,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717240353] [2021-11-22 14:58:07,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:58:07,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-22 14:58:07,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-22 14:58:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2021-11-22 14:58:07,961 INFO L87 Difference]: Start difference. First operand 860 states and 945 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:10,353 INFO L93 Difference]: Finished difference Result 1392 states and 1516 transitions. [2021-11-22 14:58:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-22 14:58:10,354 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:58:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:10,359 INFO L225 Difference]: With dead ends: 1392 [2021-11-22 14:58:10,359 INFO L226 Difference]: Without dead ends: 1390 [2021-11-22 14:58:10,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 146 SyntacticMatches, 7 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2965 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=802, Invalid=8128, Unknown=0, NotChecked=0, Total=8930 [2021-11-22 14:58:10,361 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 142 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 613 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:10,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 419 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1397 Invalid, 0 Unknown, 613 Unchecked, 0.9s Time] [2021-11-22 14:58:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-22 14:58:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 896. [2021-11-22 14:58:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.0983240223463686) internal successors, (983), 895 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 983 transitions. [2021-11-22 14:58:10,503 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 983 transitions. Word has length 75 [2021-11-22 14:58:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:10,504 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 983 transitions. [2021-11-22 14:58:10,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 983 transitions. [2021-11-22 14:58:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:58:10,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:10,506 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:10,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-22 14:58:10,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:58:10,715 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:58:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash 663356771, now seen corresponding path program 7 times [2021-11-22 14:58:10,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:10,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446884002] [2021-11-22 14:58:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:10,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 46 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:10,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:10,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446884002] [2021-11-22 14:58:10,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446884002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:58:10,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889464766] [2021-11-22 14:58:10,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-22 14:58:10,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:58:10,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:58:10,956 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:58:10,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-22 14:58:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:11,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 14:58:11,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:58:11,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-22 14:58:11,151 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 14:58:11,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 14:58:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:11,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:58:12,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:58:12,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:58:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:12,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889464766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:58:12,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:58:12,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 42 [2021-11-22 14:58:12,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995671820] [2021-11-22 14:58:12,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:58:12,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-22 14:58:12,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-22 14:58:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1591, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 14:58:12,369 INFO L87 Difference]: Start difference. First operand 896 states and 983 transitions. Second operand has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:37,135 INFO L93 Difference]: Finished difference Result 2367 states and 2586 transitions. [2021-11-22 14:58:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 416 states. [2021-11-22 14:58:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:58:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:37,145 INFO L225 Difference]: With dead ends: 2367 [2021-11-22 14:58:37,145 INFO L226 Difference]: Without dead ends: 2313 [2021-11-22 14:58:37,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87495 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=10538, Invalid=195124, Unknown=0, NotChecked=0, Total=205662 [2021-11-22 14:58:37,157 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 1674 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 10938 mSolverCounterSat, 1249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 12187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1249 IncrementalHoareTripleChecker+Valid, 10938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:37,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 1999 Invalid, 12187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1249 Valid, 10938 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-22 14:58:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2021-11-22 14:58:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 708. [2021-11-22 14:58:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.0975954738330975) internal successors, (776), 707 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 776 transitions. [2021-11-22 14:58:37,285 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 776 transitions. Word has length 75 [2021-11-22 14:58:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:37,286 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 776 transitions. [2021-11-22 14:58:37,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.809523809523809) internal successors, (202), 42 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:37,286 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 776 transitions. [2021-11-22 14:58:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-22 14:58:37,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:37,287 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:37,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-22 14:58:37,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-22 14:58:37,488 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:58:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1433083520, now seen corresponding path program 1 times [2021-11-22 14:58:37,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143237611] [2021-11-22 14:58:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:37,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:37,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:37,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143237611] [2021-11-22 14:58:37,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143237611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:58:37,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556400746] [2021-11-22 14:58:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:37,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:58:37,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:58:37,735 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:58:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa2b081-21bf-4a92-bfed-d8b0c0df3c98/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-22 14:58:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:37,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-22 14:58:37,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:58:37,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-22 14:58:38,509 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-22 14:58:38,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 26 [2021-11-22 14:58:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:38,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:58:38,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-11-22 14:58:38,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-22 14:58:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:38,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556400746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:58:38,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:58:38,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 28 [2021-11-22 14:58:38,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520562347] [2021-11-22 14:58:38,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:58:38,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 14:58:38,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:38,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 14:58:38,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-11-22 14:58:38,798 INFO L87 Difference]: Start difference. First operand 708 states and 776 transitions. Second operand has 28 states, 28 states have (on average 5.107142857142857) internal successors, (143), 28 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)