./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test23-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be --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 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:16:14,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:16:14,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:16:14,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:16:14,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:16:14,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:16:14,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:16:14,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:16:14,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:16:14,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:16:14,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:16:14,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:16:14,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:16:14,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:16:14,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:16:14,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:16:14,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:16:14,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:16:14,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:16:14,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:16:14,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:16:14,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:16:14,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:16:14,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:16:14,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:16:14,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:16:14,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:16:14,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:16:14,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:16:14,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:16:14,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:16:14,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:16:14,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:16:14,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:16:14,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:16:14,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:16:14,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:16:14,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:16:14,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:16:14,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:16:14,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:16:14,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:16:14,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:16:14,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:16:14,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:16:14,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:16:14,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:16:14,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:16:14,777 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:16:14,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:16:14,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:16:14,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:16:14,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:16:14,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:16:14,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:16:14,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:16:14,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:16:14,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:16:14,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:16:14,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:16:14,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:16:14,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:16:14,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:16:14,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:16:14,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:16:14,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:16:14,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:16:14,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:16:14,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:16:14,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:16:14,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:16:14,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:16:14,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:16:14,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:16:14,784 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_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2021-10-21 19:16:15,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:16:15,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:16:15,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:16:15,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:16:15,170 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:16:15,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-regression/test23-2.c [2021-10-21 19:16:15,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/data/50c88838f/90c4aec377504c6eb25dc089a31db39c/FLAG44914c111 [2021-10-21 19:16:15,810 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:16:15,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/sv-benchmarks/c/ldv-regression/test23-2.c [2021-10-21 19:16:15,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/data/50c88838f/90c4aec377504c6eb25dc089a31db39c/FLAG44914c111 [2021-10-21 19:16:16,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/data/50c88838f/90c4aec377504c6eb25dc089a31db39c [2021-10-21 19:16:16,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:16:16,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:16:16,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:16:16,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:16:16,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:16:16,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10840b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16, skipping insertion in model container [2021-10-21 19:16:16,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:16:16,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:16:16,454 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2021-10-21 19:16:16,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:16:16,472 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:16:16,508 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2021-10-21 19:16:16,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:16:16,533 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:16:16,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16 WrapperNode [2021-10-21 19:16:16,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:16:16,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:16:16,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:16:16,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:16:16,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:16:16,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:16:16,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:16:16,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:16:16,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:16:16,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:16:16,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:16:16,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:16:16,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (1/1) ... [2021-10-21 19:16:16,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:16:16,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:16,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:16:16,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:16:16,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:16:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:16:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:16:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:16:16,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:16:16,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:16:17,118 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:16:17,118 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-21 19:16:17,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:16:17 BoogieIcfgContainer [2021-10-21 19:16:17,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:16:17,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:16:17,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:16:17,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:16:17,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:16:16" (1/3) ... [2021-10-21 19:16:17,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602d858f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:16:17, skipping insertion in model container [2021-10-21 19:16:17,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:16" (2/3) ... [2021-10-21 19:16:17,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602d858f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:16:17, skipping insertion in model container [2021-10-21 19:16:17,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:16:17" (3/3) ... [2021-10-21 19:16:17,138 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-2.c [2021-10-21 19:16:17,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:16:17,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:16:17,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:16:17,220 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 [2021-10-21 19:16:17,220 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:16:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:16:17,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:17,251 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:17,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:17,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2100293056, now seen corresponding path program 1 times [2021-10-21 19:16:17,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:17,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417106918] [2021-10-21 19:16:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:17,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:17,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:17,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417106918] [2021-10-21 19:16:17,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417106918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:16:17,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:16:17,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:16:17,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553138705] [2021-10-21 19:16:17,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:16:17,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:16:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:16:17,565 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:17,579 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-10-21 19:16:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:16:17,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-10-21 19:16:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:17,589 INFO L225 Difference]: With dead ends: 30 [2021-10-21 19:16:17,590 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:16:17,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:16:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:16:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 19:16:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-21 19:16:17,629 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2021-10-21 19:16:17,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:17,630 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-21 19:16:17,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-21 19:16:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:16:17,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:17,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:17,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:16:17,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash 478567452, now seen corresponding path program 1 times [2021-10-21 19:16:17,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:17,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98097052] [2021-10-21 19:16:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:17,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:18,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:18,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98097052] [2021-10-21 19:16:18,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98097052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:16:18,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:16:18,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:16:18,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34711854] [2021-10-21 19:16:18,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:16:18,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:18,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:16:18,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:16:18,014 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:18,489 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2021-10-21 19:16:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:16:18,490 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:16:18,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:18,492 INFO L225 Difference]: With dead ends: 59 [2021-10-21 19:16:18,493 INFO L226 Difference]: Without dead ends: 54 [2021-10-21 19:16:18,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 359.6ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:16:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-21 19:16:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 25. [2021-10-21 19:16:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-21 19:16:18,511 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2021-10-21 19:16:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:18,512 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-21 19:16:18,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-21 19:16:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:16:18,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:18,514 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:18,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:16:18,515 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:18,526 INFO L82 PathProgramCache]: Analyzing trace with hash -108238562, now seen corresponding path program 1 times [2021-10-21 19:16:18,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:18,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352498664] [2021-10-21 19:16:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:18,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:18,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:18,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352498664] [2021-10-21 19:16:18,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352498664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:16:18,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:16:18,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:16:18,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437625758] [2021-10-21 19:16:18,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:16:18,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:18,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:16:18,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:16:18,637 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:18,849 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-10-21 19:16:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:16:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:16:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:18,850 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:16:18,851 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:16:18,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:16:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:16:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 25. [2021-10-21 19:16:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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) [2021-10-21 19:16:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-21 19:16:18,857 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2021-10-21 19:16:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:18,857 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-21 19:16:18,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-21 19:16:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:16:18,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:18,859 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:18,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:16:18,859 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:18,860 INFO L82 PathProgramCache]: Analyzing trace with hash -501265572, now seen corresponding path program 1 times [2021-10-21 19:16:18,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:18,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118699670] [2021-10-21 19:16:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:18,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:19,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:19,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118699670] [2021-10-21 19:16:19,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118699670] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:16:19,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:16:19,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:16:19,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413546218] [2021-10-21 19:16:19,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:16:19,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:16:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:16:19,145 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:19,454 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2021-10-21 19:16:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:16:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:16:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:19,455 INFO L225 Difference]: With dead ends: 51 [2021-10-21 19:16:19,456 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 19:16:19,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 251.2ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:16:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 19:16:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 22. [2021-10-21 19:16:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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) [2021-10-21 19:16:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-21 19:16:19,463 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2021-10-21 19:16:19,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:19,463 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-21 19:16:19,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:19,464 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-21 19:16:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:16:19,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:19,465 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:19,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:16:19,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:19,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1851619425, now seen corresponding path program 1 times [2021-10-21 19:16:19,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:19,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771375552] [2021-10-21 19:16:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:19,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:19,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:19,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771375552] [2021-10-21 19:16:19,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771375552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:19,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290885322] [2021-10-21 19:16:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:19,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:19,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:19,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:16:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:19,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:16:19,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:20,137 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 80 treesize of output 76 [2021-10-21 19:16:20,562 INFO L354 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2021-10-21 19:16:20,562 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 78 treesize of output 41 [2021-10-21 19:16:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:20,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290885322] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:20,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:20,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-10-21 19:16:20,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220389670] [2021-10-21 19:16:20,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:16:20,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:16:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:16:20,592 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:21,616 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-10-21 19:16:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:16:21,617 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:16:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:21,618 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:16:21,618 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:16:21,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 987.3ms TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2021-10-21 19:16:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:16:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 24. [2021-10-21 19:16:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-21 19:16:21,628 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2021-10-21 19:16:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:21,628 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-21 19:16:21,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:21,629 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-10-21 19:16:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:16:21,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:21,630 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:21,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:21,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:21,845 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1495361690, now seen corresponding path program 2 times [2021-10-21 19:16:21,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:21,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423582349] [2021-10-21 19:16:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:21,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:22,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:22,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423582349] [2021-10-21 19:16:22,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423582349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:22,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336082654] [2021-10-21 19:16:22,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:22,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:22,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:22,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:22,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:16:22,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:22,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:22,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-21 19:16:22,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:22,497 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 66 treesize of output 62 [2021-10-21 19:16:23,145 INFO L354 Elim1Store]: treesize reduction 54, result has 11.5 percent of original size [2021-10-21 19:16:23,146 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 73 treesize of output 49 [2021-10-21 19:16:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:23,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336082654] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:23,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:23,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-10-21 19:16:23,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157466506] [2021-10-21 19:16:23,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-21 19:16:23,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:23,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-21 19:16:23,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:16:23,187 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:24,584 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2021-10-21 19:16:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-21 19:16:24,585 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 19:16:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:24,589 INFO L225 Difference]: With dead ends: 63 [2021-10-21 19:16:24,589 INFO L226 Difference]: Without dead ends: 58 [2021-10-21 19:16:24,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1516.6ms TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:16:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-21 19:16:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 26. [2021-10-21 19:16:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-21 19:16:24,606 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2021-10-21 19:16:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:24,606 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-21 19:16:24,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-10-21 19:16:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:16:24,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:24,610 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:24,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:24,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:24,837 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:24,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1013708501, now seen corresponding path program 3 times [2021-10-21 19:16:24,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:24,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505561429] [2021-10-21 19:16:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:24,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:25,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:25,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505561429] [2021-10-21 19:16:25,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505561429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:25,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464530927] [2021-10-21 19:16:25,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:16:25,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:25,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:25,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:25,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:16:25,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:16:25,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:25,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-21 19:16:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:25,500 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 54 treesize of output 50 [2021-10-21 19:16:26,104 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-21 19:16:26,104 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 98 treesize of output 60 [2021-10-21 19:16:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:16:26,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464530927] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:26,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:26,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2021-10-21 19:16:26,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834734831] [2021-10-21 19:16:26,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-21 19:16:26,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:26,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-21 19:16:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:16:26,179 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:29,509 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-10-21 19:16:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-21 19:16:29,509 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:16:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:29,510 INFO L225 Difference]: With dead ends: 65 [2021-10-21 19:16:29,510 INFO L226 Difference]: Without dead ends: 25 [2021-10-21 19:16:29,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 3442.9ms TimeCoverageRelationStatistics Valid=768, Invalid=3392, Unknown=0, NotChecked=0, Total=4160 [2021-10-21 19:16:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-21 19:16:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-21 19:16:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-21 19:16:29,518 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2021-10-21 19:16:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:29,519 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-21 19:16:29,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-21 19:16:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:16:29,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:29,520 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:29,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:29,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:29,745 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:29,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:29,746 INFO L82 PathProgramCache]: Analyzing trace with hash 722062576, now seen corresponding path program 1 times [2021-10-21 19:16:29,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:29,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571520295] [2021-10-21 19:16:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:29,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:30,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:30,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571520295] [2021-10-21 19:16:30,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571520295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:30,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613001116] [2021-10-21 19:16:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:30,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:30,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:30,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:16:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:30,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-21 19:16:30,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:30,288 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 27 treesize of output 23 [2021-10-21 19:16:30,586 INFO L354 Elim1Store]: treesize reduction 64, result has 9.9 percent of original size [2021-10-21 19:16:30,586 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 59 treesize of output 30 [2021-10-21 19:16:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:30,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613001116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:30,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:30,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 20 [2021-10-21 19:16:30,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747162532] [2021-10-21 19:16:30,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:16:30,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:30,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:16:30,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:16:30,603 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:31,207 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-21 19:16:31,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:16:31,208 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 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 24 [2021-10-21 19:16:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:31,208 INFO L225 Difference]: With dead ends: 32 [2021-10-21 19:16:31,209 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 19:16:31,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 740.7ms TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:16:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 19:16:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-21 19:16:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 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) [2021-10-21 19:16:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-21 19:16:31,216 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2021-10-21 19:16:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:31,216 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-21 19:16:31,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-21 19:16:31,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:16:31,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:31,218 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:31,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:31,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 19:16:31,421 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:31,422 INFO L82 PathProgramCache]: Analyzing trace with hash -372767691, now seen corresponding path program 2 times [2021-10-21 19:16:31,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:31,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054982178] [2021-10-21 19:16:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:31,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:31,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:31,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054982178] [2021-10-21 19:16:31,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054982178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:31,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737068913] [2021-10-21 19:16:31,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:31,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:31,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:31,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:16:31,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:31,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:31,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-21 19:16:31,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:31,950 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 28 treesize of output 24 [2021-10-21 19:16:32,385 INFO L354 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2021-10-21 19:16:32,385 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 61 treesize of output 30 [2021-10-21 19:16:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:32,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737068913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:32,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:32,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2021-10-21 19:16:32,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782107053] [2021-10-21 19:16:32,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-21 19:16:32,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-21 19:16:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:16:32,420 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:33,251 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-21 19:16:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:16:33,252 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-10-21 19:16:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:33,252 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:16:33,252 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 19:16:33,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1014.5ms TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:16:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 19:16:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-21 19:16:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 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) [2021-10-21 19:16:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-21 19:16:33,259 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2021-10-21 19:16:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:33,259 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-21 19:16:33,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-21 19:16:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:16:33,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:33,261 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:33,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:33,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:33,462 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:33,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash -237666758, now seen corresponding path program 3 times [2021-10-21 19:16:33,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:33,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550714138] [2021-10-21 19:16:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:33,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:33,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:33,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550714138] [2021-10-21 19:16:33,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550714138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:33,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619894867] [2021-10-21 19:16:33,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:16:33,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:33,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:33,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:33,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:16:33,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:16:33,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:33,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-21 19:16:33,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:34,037 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 28 treesize of output 24 [2021-10-21 19:16:34,624 INFO L354 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2021-10-21 19:16:34,625 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 86 treesize of output 46 [2021-10-21 19:16:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-21 19:16:34,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619894867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:34,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:34,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 24 [2021-10-21 19:16:34,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210523928] [2021-10-21 19:16:34,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-21 19:16:34,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-21 19:16:34,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:16:34,706 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:36,535 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-21 19:16:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-21 19:16:36,535 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-21 19:16:36,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:36,536 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:16:36,536 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:16:36,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2000.7ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:16:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:16:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:16:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:16:36,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-21 19:16:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:36,539 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:16:36,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:16:36,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:16:36,542 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:16:36,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:36,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:16:36,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:16:36,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:36,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:36,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:36,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:36,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:37,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:37,927 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:16:37,927 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:16:37,927 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:16:37,927 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2021-10-21 19:16:37,927 INFO L860 garLoopResultBuilder]: At program point L53(lines 33 54) the Hoare annotation is: true [2021-10-21 19:16:37,927 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-10-21 19:16:37,928 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:16:37,928 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-21 19:16:37,928 INFO L857 garLoopResultBuilder]: For program point L25-2(line 25) no Hoare annotation was computed. [2021-10-21 19:16:37,928 INFO L853 garLoopResultBuilder]: At program point L25-3(lines 23 26) the Hoare annotation is: (let ((.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse1 (= |~#d2~0.offset| 0)) (.cse2 (= |~#d1~0.offset| 0)) (.cse3 (= |ULTIMATE.start_get_dummy_#res.offset| 0))) (or (and .cse0 .cse1 (= |ULTIMATE.start_get_dummy_#res.base| |~#d2~0.base|) .cse2 .cse3) (and .cse0 .cse1 .cse2 (= |~#d1~0.base| |ULTIMATE.start_get_dummy_#res.base|) .cse3))) [2021-10-21 19:16:37,928 INFO L857 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2021-10-21 19:16:37,928 INFO L857 garLoopResultBuilder]: For program point L25-6(line 25) no Hoare annotation was computed. [2021-10-21 19:16:37,929 INFO L853 garLoopResultBuilder]: At program point L25-7(lines 23 26) the Hoare annotation is: (let ((.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse1 (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|)) (.cse2 (= |~#d1~0.offset| 0))) (or (and .cse0 (not .cse1) (not (= ULTIMATE.start_main_~pd1~0.base |ULTIMATE.start_get_dummy_#res.base|)) .cse2) (and (let ((.cse3 (= |~#d2~0.offset| 0))) (or (and .cse3 (= |ULTIMATE.start_get_dummy_#res.base| |~#d2~0.base|) (not (= |~#d1~0.base| |ULTIMATE.start_get_dummy_#res.base|)) (= |ULTIMATE.start_get_dummy_#res.offset| 0)) (and .cse0 .cse3 .cse1))) .cse2 (= ULTIMATE.start_main_~pd1~0.offset 0)))) [2021-10-21 19:16:37,929 INFO L853 garLoopResultBuilder]: At program point L46(lines 34 54) the Hoare annotation is: false [2021-10-21 19:16:37,929 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 42 44) no Hoare annotation was computed. [2021-10-21 19:16:37,929 INFO L853 garLoopResultBuilder]: At program point L42-3(lines 42 44) the Hoare annotation is: (let ((.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse1 (= |~#d2~0.offset| 0)) (.cse2 (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base)) (.cse4 (= ULTIMATE.start_main_~pd2~0.offset 0)) (.cse5 (= |~#d1~0.offset| 0)) (.cse6 (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base)) (.cse7 (= ULTIMATE.start_main_~pd1~0.offset 0)) (.cse8 (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_get_dummy_#res.base| |~#d2~0.base|) (= ULTIMATE.start_main_~pd1~0.base |ULTIMATE.start_get_dummy_#res.base|) (= (mod (* ULTIMATE.start_main_~pa~0.offset 3) (- 4)) 0) (let ((.cse3 (div (+ (* ULTIMATE.start_main_~pa~0.offset (- 1)) 8) (- 4)))) (= .cse3 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) (+ (* .cse3 4) ULTIMATE.start_main_~pd2~0.offset 8)))) .cse4 .cse5 .cse6 (= |ULTIMATE.start_get_dummy_#res.offset| 0) .cse7 .cse8) (and .cse0 .cse1 .cse2 (exists ((aux_div_ULTIMATE.start_main_~pd1~0.offset_88 Int)) (let ((.cse9 (* 3 ULTIMATE.start_main_~pa~0.offset)) (.cse10 (* 4 aux_div_ULTIMATE.start_main_~pd1~0.offset_88))) (and (= (+ aux_div_ULTIMATE.start_main_~pd1~0.offset_88 ULTIMATE.start_main_~pa~0.offset) (+ (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) (+ (* (div (+ (* aux_div_ULTIMATE.start_main_~pd1~0.offset_88 (- 4)) 8 (* ULTIMATE.start_main_~pa~0.offset (- 4))) (- 4)) 4) ULTIMATE.start_main_~pd2~0.offset 8)) 2)) (<= (+ .cse9 .cse10 ULTIMATE.start_main_~pd2~0.offset) 0) (<= 0 (+ .cse9 .cse10))))) .cse4 .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|)))) [2021-10-21 19:16:37,930 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 48) no Hoare annotation was computed. [2021-10-21 19:16:37,930 INFO L857 garLoopResultBuilder]: For program point L42-4(lines 42 44) no Hoare annotation was computed. [2021-10-21 19:16:37,930 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 48) no Hoare annotation was computed. [2021-10-21 19:16:37,930 INFO L853 garLoopResultBuilder]: At program point L30(lines 28 31) the Hoare annotation is: (let ((.cse0 (not (= |~#d1~0.base| |~#d2~0.base|))) (.cse5 (= |~#d2~0.offset| 0)) (.cse6 (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base)) (.cse7 (<= 1 |ULTIMATE.start_check_#res|)) (.cse9 (= ULTIMATE.start_main_~pd2~0.offset 0)) (.cse10 (= |~#d1~0.offset| 0)) (.cse11 (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base)) (.cse12 (= ULTIMATE.start_main_~pd1~0.offset 0)) (.cse13 (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)))) (or (and .cse0 (exists ((aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 Int) (aux_div_ULTIMATE.start_main_~pa~0.offset_60 Int)) (let ((.cse2 (select |#memory_int| ULTIMATE.start_main_~pd2~0.base)) (.cse3 (* aux_div_ULTIMATE.start_main_~pa~0.offset_60 4))) (let ((.cse1 (select .cse2 (+ (* aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 4) 8 .cse3))) (.cse4 (* 4 aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55))) (and (<= .cse1 ULTIMATE.start_main_~i~0) (< ULTIMATE.start_main_~i~0 (+ .cse1 1)) (= (select .cse2 (+ ULTIMATE.start_main_~pd2~0.offset 8 .cse3)) aux_div_ULTIMATE.start_main_~pa~0.offset_60) (< 0 (+ .cse4 4)) (<= .cse4 0))))) .cse5 .cse6 (= |ULTIMATE.start_get_dummy_#res.base| |~#d2~0.base|) (= ULTIMATE.start_main_~pd1~0.base |ULTIMATE.start_get_dummy_#res.base|) (= (mod (* ULTIMATE.start_main_~pa~0.offset 3) (- 4)) 0) .cse7 (let ((.cse8 (div (+ (* ULTIMATE.start_main_~pa~0.offset (- 1)) 8) (- 4)))) (= .cse8 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) (+ (* .cse8 4) ULTIMATE.start_main_~pd2~0.offset 8)))) .cse9 .cse10 .cse11 (= |ULTIMATE.start_get_dummy_#res.offset| 0) .cse12 .cse13) (and .cse0 .cse5 .cse6 (exists ((aux_div_ULTIMATE.start_main_~pd1~0.offset_88 Int)) (let ((.cse14 (* 3 ULTIMATE.start_main_~pa~0.offset)) (.cse15 (* 4 aux_div_ULTIMATE.start_main_~pd1~0.offset_88))) (and (= (+ aux_div_ULTIMATE.start_main_~pd1~0.offset_88 ULTIMATE.start_main_~pa~0.offset) (+ (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) (+ (* (div (+ (* aux_div_ULTIMATE.start_main_~pd1~0.offset_88 (- 4)) 8 (* ULTIMATE.start_main_~pa~0.offset (- 4))) (- 4)) 4) ULTIMATE.start_main_~pd2~0.offset 8)) 2)) (<= (+ .cse14 .cse15 ULTIMATE.start_main_~pd2~0.offset) 0) (<= 0 (+ .cse14 .cse15))))) .cse7 (exists ((ULTIMATE.start_main_~pa~0.offset Int) (aux_div_ULTIMATE.start_main_~pd1~0.offset_88 Int)) (let ((.cse16 (select |#memory_int| ULTIMATE.start_main_~pd2~0.base))) (let ((.cse19 (select .cse16 ULTIMATE.start_main_~pa~0.offset)) (.cse17 (* 3 ULTIMATE.start_main_~pa~0.offset)) (.cse18 (* 4 aux_div_ULTIMATE.start_main_~pd1~0.offset_88))) (and (= (+ aux_div_ULTIMATE.start_main_~pd1~0.offset_88 ULTIMATE.start_main_~pa~0.offset) (+ (select .cse16 (+ (* (div (+ (* aux_div_ULTIMATE.start_main_~pd1~0.offset_88 (- 4)) 8 (* ULTIMATE.start_main_~pa~0.offset (- 4))) (- 4)) 4) ULTIMATE.start_main_~pd2~0.offset 8)) 2)) (<= (+ .cse17 .cse18 ULTIMATE.start_main_~pd2~0.offset) 0) (< ULTIMATE.start_main_~i~0 (+ .cse19 1)) (<= .cse19 ULTIMATE.start_main_~i~0) (<= 0 (+ .cse17 .cse18)))))) .cse9 .cse10 .cse11 .cse12 .cse13 (= ULTIMATE.start_main_~pd1~0.base |~#d1~0.base|)))) [2021-10-21 19:16:37,931 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 21) no Hoare annotation was computed. [2021-10-21 19:16:37,935 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:16:37,952 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,953 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,953 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,953 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,953 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,954 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,954 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,954 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,955 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,955 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,955 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,956 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,956 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,956 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,956 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,957 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,957 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,957 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,958 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,958 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,958 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,958 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,961 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,962 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,962 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,962 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,963 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,963 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:37,963 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,963 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:37,964 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,964 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,964 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,965 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,965 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,965 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,965 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,966 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,967 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,967 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:37,967 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,971 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,972 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,972 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,972 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,974 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,974 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,975 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,975 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:37,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:16:37 BoogieIcfgContainer [2021-10-21 19:16:37,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:16:37,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:16:37,978 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:16:37,978 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:16:37,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:16:17" (3/4) ... [2021-10-21 19:16:37,981 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:16:37,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 19:16:37,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 19:16:37,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:16:37,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:16:38,016 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(d1 == d2) && d2 == 0) && \result == d2) && d1 == 0) && \result == 0) || ((((!(d1 == d2) && d2 == 0) && d1 == 0) && d1 == \result) && \result == 0) [2021-10-21 19:16:38,016 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(d1 == d2) && !(pd1 == d1)) && !(pd1 == \result)) && d1 == 0) || ((((((d2 == 0 && \result == d2) && !(d1 == \result)) && \result == 0) || ((!(d1 == d2) && d2 == 0) && pd1 == d1)) && d1 == 0) && pd1 == 0) [2021-10-21 19:16:38,017 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((!(d1 == d2) && d2 == 0) && pd2 == pa) && \result == d2) && pd1 == \result) && pa * 3 % -4 == 0) && (pa * -1 + 8) / -4 == unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8]) && pd2 == 0) && d1 == 0) && pd1 == pd2) && \result == 0) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) || (((((((((!(d1 == d2) && d2 == 0) && pd2 == pa) && (\exists aux_div_ULTIMATE.start_main_~pd1~0.offset_88 : int :: (aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pa == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pd1~0.offset_88 * -4 + 8 + pa * -4) / -4 * 4 + pd2 + 8] + 2 && 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pd2 <= 0) && 0 <= 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88)) && pd2 == 0) && d1 == 0) && pd1 == pd2) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pd1 == d1) [2021-10-21 19:16:38,017 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((!(d1 == d2) && (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_60 : int :: (((unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + 8 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4] <= i && i < unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + 8 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4] + 1) && unknown-#memory_int-unknown[pd2][pd2 + 8 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4] == aux_div_ULTIMATE.start_main_~pa~0.offset_60) && 0 < 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 + 4) && 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 <= 0)) && d2 == 0) && pd2 == pa) && \result == d2) && pd1 == \result) && pa * 3 % -4 == 0) && 1 <= \result) && (pa * -1 + 8) / -4 == unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8]) && pd2 == 0) && d1 == 0) && pd1 == pd2) && \result == 0) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) || (((((((((((!(d1 == d2) && d2 == 0) && pd2 == pa) && (\exists aux_div_ULTIMATE.start_main_~pd1~0.offset_88 : int :: (aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pa == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pd1~0.offset_88 * -4 + 8 + pa * -4) / -4 * 4 + pd2 + 8] + 2 && 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pd2 <= 0) && 0 <= 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88)) && 1 <= \result) && (\exists ULTIMATE.start_main_~pa~0.offset : int, aux_div_ULTIMATE.start_main_~pd1~0.offset_88 : int :: (((aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + ULTIMATE.start_main_~pa~0.offset == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pd1~0.offset_88 * -4 + 8 + ULTIMATE.start_main_~pa~0.offset * -4) / -4 * 4 + pd2 + 8] + 2 && 3 * ULTIMATE.start_main_~pa~0.offset + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pd2 <= 0) && i < unknown-#memory_int-unknown[pd2][ULTIMATE.start_main_~pa~0.offset] + 1) && unknown-#memory_int-unknown[pd2][ULTIMATE.start_main_~pa~0.offset] <= i) && 0 <= 3 * ULTIMATE.start_main_~pa~0.offset + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88)) && pd2 == 0) && d1 == 0) && pd1 == pd2) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pd1 == d1) [2021-10-21 19:16:38,034 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:16:38,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:16:38,036 INFO L168 Benchmark]: Toolchain (without parser) took 21881.89 ms. Allocated memory was 83.9 MB in the beginning and 174.1 MB in the end (delta: 90.2 MB). Free memory was 48.4 MB in the beginning and 74.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:38,036 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:16:38,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.46 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 96.1 MB in the end (delta: -47.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:38,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.00 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:16:38,038 INFO L168 Benchmark]: Boogie Preprocessor took 53.57 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:38,038 INFO L168 Benchmark]: RCFGBuilder took 466.00 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 80.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:38,039 INFO L168 Benchmark]: TraceAbstraction took 20854.50 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 80.4 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:38,039 INFO L168 Benchmark]: Witness Printer took 57.12 ms. Allocated memory is still 174.1 MB. Free memory was 77.3 MB in the beginning and 74.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:38,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.46 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 96.1 MB in the end (delta: -47.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.00 ms. Allocated memory is still 119.5 MB. Free memory was 95.6 MB in the beginning and 94.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.57 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 466.00 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 80.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20854.50 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 80.4 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. * Witness Printer took 57.12 ms. Allocated memory is still 174.1 MB. Free memory was 77.3 MB in the beginning and 74.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20730.6ms, OverallIterations: 10, TraceHistogramMax: 7, EmptinessCheckTime: 27.7ms, AutomataDifference: 10096.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1169.2ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 120 SDtfs, 768 SDslu, 659 SDs, 0 SdLazy, 1420 SolverSat, 272 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1479.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2418 ImplicationChecksByTransitivity, 10431.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=9, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 89.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 132 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 32 NumberOfFragments, 519 HoareAnnotationTreeSize, 6 FomulaSimplifications, 116882 FormulaSimplificationTreeSizeReduction, 336.1ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 7632 FormulaSimplificationTreeSizeReductionInter, 825.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 103.1ms SsaConstructionTime, 531.6ms SatisfiabilityAnalysisTime, 6569.1ms InterpolantComputationTime, 339 NumberOfCodeBlocks, 329 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 323 ConstructedInterpolants, 19 QuantifiedInterpolants, 4465 SizeOfPredicates, 79 NumberOfNonLiveVariables, 818 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 45/224 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((!(d1 == d2) && !(pd1 == d1)) && !(pd1 == \result)) && d1 == 0) || ((((((d2 == 0 && \result == d2) && !(d1 == \result)) && \result == 0) || ((!(d1 == d2) && d2 == 0) && pd1 == d1)) && d1 == 0) && pd1 == 0) - InvariantResult [Line: 28]: Loop Invariant [2021-10-21 19:16:38,065 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,065 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,066 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,066 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,066 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,066 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,067 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,067 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,067 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,068 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,069 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,074 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,074 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,074 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,074 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,074 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,075 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,075 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,075 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0.offset_60,QUANTIFIED] [2021-10-21 19:16:38,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55,QUANTIFIED] [2021-10-21 19:16:38,090 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,090 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,090 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2021-10-21 19:16:38,093 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] Derived loop invariant: ((((((((((((((!(d1 == d2) && (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 : int, aux_div_ULTIMATE.start_main_~pa~0.offset_60 : int :: (((unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + 8 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4] <= i && i < unknown-#memory_int-unknown[pd2][aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 * 4 + 8 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4] + 1) && unknown-#memory_int-unknown[pd2][pd2 + 8 + aux_div_ULTIMATE.start_main_~pa~0.offset_60 * 4] == aux_div_ULTIMATE.start_main_~pa~0.offset_60) && 0 < 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 + 4) && 4 * aux_div_aux_mod_ULTIMATE.start_main_~pa~0.offset_60_55 <= 0)) && d2 == 0) && pd2 == pa) && \result == d2) && pd1 == \result) && pa * 3 % -4 == 0) && 1 <= \result) && (pa * -1 + 8) / -4 == unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8]) && pd2 == 0) && d1 == 0) && pd1 == pd2) && \result == 0) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) || (((((((((((!(d1 == d2) && d2 == 0) && pd2 == pa) && (\exists aux_div_ULTIMATE.start_main_~pd1~0.offset_88 : int :: (aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pa == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pd1~0.offset_88 * -4 + 8 + pa * -4) / -4 * 4 + pd2 + 8] + 2 && 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pd2 <= 0) && 0 <= 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88)) && 1 <= \result) && (\exists ULTIMATE.start_main_~pa~0.offset : int, aux_div_ULTIMATE.start_main_~pd1~0.offset_88 : int :: (((aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + ULTIMATE.start_main_~pa~0.offset == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pd1~0.offset_88 * -4 + 8 + ULTIMATE.start_main_~pa~0.offset * -4) / -4 * 4 + pd2 + 8] + 2 && 3 * ULTIMATE.start_main_~pa~0.offset + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pd2 <= 0) && i < unknown-#memory_int-unknown[pd2][ULTIMATE.start_main_~pa~0.offset] + 1) && unknown-#memory_int-unknown[pd2][ULTIMATE.start_main_~pa~0.offset] <= i) && 0 <= 3 * ULTIMATE.start_main_~pa~0.offset + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88)) && pd2 == 0) && d1 == 0) && pd1 == pd2) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pd1 == d1) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((!(d1 == d2) && d2 == 0) && \result == d2) && d1 == 0) && \result == 0) || ((((!(d1 == d2) && d2 == 0) && d1 == 0) && d1 == \result) && \result == 0) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant [2021-10-21 19:16:38,098 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,099 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,099 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,099 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,100 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,105 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,106 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] [2021-10-21 19:16:38,106 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pd1~0.offset_88,QUANTIFIED] Derived loop invariant: ((((((((((((!(d1 == d2) && d2 == 0) && pd2 == pa) && \result == d2) && pd1 == \result) && pa * 3 % -4 == 0) && (pa * -1 + 8) / -4 == unknown-#memory_int-unknown[pd2][(pa * -1 + 8) / -4 * 4 + pd2 + 8]) && pd2 == 0) && d1 == 0) && pd1 == pd2) && \result == 0) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) || (((((((((!(d1 == d2) && d2 == 0) && pd2 == pa) && (\exists aux_div_ULTIMATE.start_main_~pd1~0.offset_88 : int :: (aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pa == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pd1~0.offset_88 * -4 + 8 + pa * -4) / -4 * 4 + pd2 + 8] + 2 && 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88 + pd2 <= 0) && 0 <= 3 * pa + 4 * aux_div_ULTIMATE.start_main_~pd1~0.offset_88)) && pd2 == 0) && d1 == 0) && pd1 == pd2) && pd1 == 0) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pd1 == d1) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:16:38,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555f8c7-bb07-47e5-b444-0a51e7cb9feb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...