./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD --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 f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d ......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD --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 f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:51:52,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:51:52,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:51:52,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:51:52,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:51:52,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:51:52,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:51:52,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:51:52,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:51:52,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:51:52,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:51:52,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:51:52,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:51:52,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:51:52,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:51:52,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:51:52,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:51:52,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:51:52,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:51:52,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:51:52,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:51:52,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:51:52,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:51:52,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:51:52,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:51:52,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:51:52,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:51:52,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:51:52,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:51:52,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:51:52,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:51:52,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:51:52,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:51:52,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:51:52,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:51:52,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:51:52,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:51:52,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:51:52,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:51:52,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:51:52,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:51:52,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:51:52,700 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:51:52,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:51:52,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:51:52,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:51:52,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:51:52,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:51:52,704 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:51:52,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:51:52,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:51:52,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:51:52,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:51:52,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:51:52,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:51:52,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:51:52,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:51:52,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:51:52,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:51:52,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:51:52,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:51:52,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:51:52,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:51:52,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:51:52,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:51:52,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:51:52,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:51:52,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:51:52,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:51:52,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:51:52,711 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:51:52,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:51:52,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:51:52,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:51:52,714 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_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-10-28 23:51:53,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:51:53,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:51:53,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:51:53,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:51:53,106 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:51:53,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-28 23:51:53,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/40aa96525/d3e40584179841eb87623ef22b4d475e/FLAGcb2e8d838 [2021-10-28 23:51:53,776 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:51:53,777 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-28 23:51:53,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/40aa96525/d3e40584179841eb87623ef22b4d475e/FLAGcb2e8d838 [2021-10-28 23:51:54,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/40aa96525/d3e40584179841eb87623ef22b4d475e [2021-10-28 23:51:54,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:51:54,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:51:54,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:51:54,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:51:54,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:51:54,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42528d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54, skipping insertion in model container [2021-10-28 23:51:54,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:51:54,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:51:54,494 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_8e9e68ef-2f6d-4c5c-8787-893028d458da/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-28 23:51:54,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:51:54,524 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:51:54,623 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_8e9e68ef-2f6d-4c5c-8787-893028d458da/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-28 23:51:54,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:51:54,657 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:51:54,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54 WrapperNode [2021-10-28 23:51:54,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:51:54,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:51:54,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:51:54,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:51:54,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:51:54,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:51:54,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:51:54,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:51:54,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:51:54,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:51:54,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:51:54,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:51:54,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (1/1) ... [2021-10-28 23:51:54,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:51:54,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:51:54,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:51:54,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:51:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:51:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:51:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 23:51:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:51:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 23:51:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:51:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:51:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:51:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:51:55,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:51:55,599 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-28 23:51:55,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:51:55 BoogieIcfgContainer [2021-10-28 23:51:55,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:51:55,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:51:55,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:51:55,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:51:55,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:51:54" (1/3) ... [2021-10-28 23:51:55,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fc72e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:51:55, skipping insertion in model container [2021-10-28 23:51:55,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:51:54" (2/3) ... [2021-10-28 23:51:55,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fc72e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:51:55, skipping insertion in model container [2021-10-28 23:51:55,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:51:55" (3/3) ... [2021-10-28 23:51:55,620 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-28 23:51:55,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:51:55,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:51:55,714 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:51:55,722 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 [2021-10-28 23:51:55,722 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:51:55,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:51:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:51:55,750 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:51:55,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:51:55,752 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:51:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:51:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-28 23:51:55,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:51:55,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518916538] [2021-10-28 23:51:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:51:55,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:51:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:51:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:51:56,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:51:56,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518916538] [2021-10-28 23:51:56,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518916538] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:51:56,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:51:56,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:51:56,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217571560] [2021-10-28 23:51:56,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:51:56,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:51:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:51:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:51:56,042 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:51:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:51:56,068 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-10-28 23:51:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:51:56,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-28 23:51:56,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:51:56,083 INFO L225 Difference]: With dead ends: 104 [2021-10-28 23:51:56,084 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:51:56,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:51:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:51:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 23:51:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:51:56,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-10-28 23:51:56,136 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-10-28 23:51:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:51:56,137 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-10-28 23:51:56,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:51:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-10-28 23:51:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:51:56,139 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:51:56,139 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:51:56,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:51:56,140 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:51:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:51:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-28 23:51:56,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:51:56,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558093196] [2021-10-28 23:51:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:51:56,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:51:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:51:56,201 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:51:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:51:56,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:51:56,281 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:51:56,284 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:51:56,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:51:56,291 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:51:56,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:51:56,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:51:56 BoogieIcfgContainer [2021-10-28 23:51:56,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:51:56,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:51:56,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:51:56,352 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:51:56,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:51:55" (3/4) ... [2021-10-28 23:51:56,360 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:51:56,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:51:56,364 INFO L168 Benchmark]: Toolchain (without parser) took 2268.75 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 72.6 MB in the beginning and 99.8 MB in the end (delta: -27.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:51:56,366 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 107.0 MB. Free memory was 59.6 MB in the beginning and 59.6 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:51:56,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.81 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 79.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:51:56,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.28 ms. Allocated memory is still 107.0 MB. Free memory was 79.1 MB in the beginning and 76.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:51:56,379 INFO L168 Benchmark]: Boogie Preprocessor took 88.62 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 74.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:51:56,380 INFO L168 Benchmark]: RCFGBuilder took 754.06 ms. Allocated memory is still 107.0 MB. Free memory was 74.9 MB in the beginning and 59.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:51:56,380 INFO L168 Benchmark]: TraceAbstraction took 744.72 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 58.5 MB in the beginning and 99.8 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:51:56,381 INFO L168 Benchmark]: Witness Printer took 8.96 ms. Allocated memory is still 142.6 MB. Free memory is still 99.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:51:56,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 107.0 MB. Free memory was 59.6 MB in the beginning and 59.6 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 561.81 ms. Allocated memory is still 107.0 MB. Free memory was 72.4 MB in the beginning and 79.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.28 ms. Allocated memory is still 107.0 MB. Free memory was 79.1 MB in the beginning and 76.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.62 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 74.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 754.06 ms. Allocated memory is still 107.0 MB. Free memory was 74.9 MB in the beginning and 59.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 744.72 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 58.5 MB in the beginning and 99.8 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 8.96 ms. Allocated memory is still 142.6 MB. Free memory is still 99.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:51:56,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:51:59,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:51:59,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:51:59,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:51:59,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:51:59,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:51:59,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:51:59,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:51:59,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:51:59,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:51:59,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:51:59,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:51:59,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:51:59,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:51:59,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:51:59,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:51:59,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:51:59,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:51:59,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:51:59,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:51:59,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:51:59,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:51:59,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:51:59,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:51:59,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:51:59,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:51:59,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:51:59,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:51:59,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:51:59,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:51:59,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:51:59,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:51:59,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:51:59,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:51:59,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:51:59,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:51:59,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:51:59,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:51:59,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:51:59,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:51:59,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:51:59,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:51:59,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:51:59,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:51:59,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:51:59,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:51:59,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:51:59,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:51:59,897 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:51:59,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:51:59,898 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:51:59,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:51:59,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:51:59,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:51:59,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:51:59,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:51:59,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:51:59,902 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:51:59,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:51:59,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:51:59,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:51:59,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:51:59,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:51:59,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:51:59,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:51:59,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:51:59,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:51:59,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:51:59,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:51:59,906 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:51:59,906 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:51:59,906 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:51:59,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:51:59,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:51:59,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:51:59,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:51:59,908 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-10-28 23:52:00,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:52:00,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:52:00,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:52:00,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:52:00,502 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:52:00,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-28 23:52:00,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/30c33ce0c/23d35f8d79d84d8887b3e44fa0d538f5/FLAGe6ebc73b3 [2021-10-28 23:52:01,324 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:52:01,331 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-28 23:52:01,343 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/30c33ce0c/23d35f8d79d84d8887b3e44fa0d538f5/FLAGe6ebc73b3 [2021-10-28 23:52:01,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/data/30c33ce0c/23d35f8d79d84d8887b3e44fa0d538f5 [2021-10-28 23:52:01,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:52:01,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:52:01,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:52:01,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:52:01,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:52:01,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:52:01" (1/1) ... [2021-10-28 23:52:01,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb5e890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:01, skipping insertion in model container [2021-10-28 23:52:01,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:52:01" (1/1) ... [2021-10-28 23:52:01,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:52:01,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:52:01,945 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_8e9e68ef-2f6d-4c5c-8787-893028d458da/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-28 23:52:01,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:52:01,965 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:52:02,084 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_8e9e68ef-2f6d-4c5c-8787-893028d458da/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-28 23:52:02,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:52:02,109 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:52:02,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02 WrapperNode [2021-10-28 23:52:02,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:52:02,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:52:02,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:52:02,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:52:02,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:52:02,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:52:02,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:52:02,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:52:02,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:52:02,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:52:02,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:52:02,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:52:02,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (1/1) ... [2021-10-28 23:52:02,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:52:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:52:02,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:52:02,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:52:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-28 23:52:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-28 23:52:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:52:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:52:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:52:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:52:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:52:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:52:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:52:07,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:52:07,027 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-28 23:52:07,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:52:07 BoogieIcfgContainer [2021-10-28 23:52:07,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:52:07,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:52:07,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:52:07,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:52:07,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:52:01" (1/3) ... [2021-10-28 23:52:07,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161e5dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:52:07, skipping insertion in model container [2021-10-28 23:52:07,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:52:02" (2/3) ... [2021-10-28 23:52:07,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161e5dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:52:07, skipping insertion in model container [2021-10-28 23:52:07,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:52:07" (3/3) ... [2021-10-28 23:52:07,042 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-28 23:52:07,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:52:07,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:52:07,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:52:07,126 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 [2021-10-28 23:52:07,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:52:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:52:07,160 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:07,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:07,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-28 23:52:07,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:07,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692417029] [2021-10-28 23:52:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:07,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:07,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:07,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:07,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:52:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:07,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:52:07,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:07,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:07,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:07,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692417029] [2021-10-28 23:52:07,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692417029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:07,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:07,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:52:07,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316454813] [2021-10-28 23:52:07,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:52:07,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:52:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:52:07,985 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:08,025 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-10-28 23:52:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:52:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-10-28 23:52:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:08,041 INFO L225 Difference]: With dead ends: 104 [2021-10-28 23:52:08,042 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:52:08,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:52:08,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:52:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 23:52:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-10-28 23:52:08,100 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-10-28 23:52:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:08,100 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-10-28 23:52:08,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-10-28 23:52:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:52:08,102 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:08,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:08,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:52:08,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:08,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:08,325 INFO L85 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-28 23:52:08,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:08,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967311877] [2021-10-28 23:52:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:08,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:08,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:08,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:52:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:08,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:52:08,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:09,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:09,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:09,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967311877] [2021-10-28 23:52:09,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967311877] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:09,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:09,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:52:09,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782568932] [2021-10-28 23:52:09,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:52:09,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:52:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:52:09,445 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:10,967 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2021-10-28 23:52:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:52:10,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 23:52:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:10,971 INFO L225 Difference]: With dead ends: 105 [2021-10-28 23:52:10,971 INFO L226 Difference]: Without dead ends: 63 [2021-10-28 23:52:10,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:52:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-28 23:52:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2021-10-28 23:52:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2021-10-28 23:52:10,984 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2021-10-28 23:52:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:10,985 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-10-28 23:52:10,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2021-10-28 23:52:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:52:10,986 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:10,986 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:11,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:52:11,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:11,190 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2021-10-28 23:52:11,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:11,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171586047] [2021-10-28 23:52:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:11,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:11,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:11,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:11,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:52:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:11,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:52:11,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:11,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:11,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:11,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171586047] [2021-10-28 23:52:11,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171586047] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:11,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:11,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-28 23:52:11,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738562621] [2021-10-28 23:52:11,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:52:11,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:52:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:52:11,857 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:12,223 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2021-10-28 23:52:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:52:12,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 11 [2021-10-28 23:52:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:12,227 INFO L225 Difference]: With dead ends: 63 [2021-10-28 23:52:12,227 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 23:52:12,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:52:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 23:52:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-10-28 23:52:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2021-10-28 23:52:12,237 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2021-10-28 23:52:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2021-10-28 23:52:12,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2021-10-28 23:52:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:52:12,239 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:12,240 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:12,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:52:12,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:12,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:12,450 INFO L85 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2021-10-28 23:52:12,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:12,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973901910] [2021-10-28 23:52:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:12,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:12,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:12,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:12,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:52:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:12,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:52:12,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:13,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:14,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:14,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973901910] [2021-10-28 23:52:14,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973901910] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:14,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:14,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-10-28 23:52:14,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416990265] [2021-10-28 23:52:14,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:52:14,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:52:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:52:14,587 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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) [2021-10-28 23:52:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:15,588 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2021-10-28 23:52:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:52:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 23:52:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:15,590 INFO L225 Difference]: With dead ends: 60 [2021-10-28 23:52:15,591 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 23:52:15,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:52:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 23:52:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-28 23:52:15,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2021-10-28 23:52:15,600 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2021-10-28 23:52:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:15,600 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2021-10-28 23:52:15,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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) [2021-10-28 23:52:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2021-10-28 23:52:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:52:15,603 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:15,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:15,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:52:15,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:15,817 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:15,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2021-10-28 23:52:15,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:15,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76488993] [2021-10-28 23:52:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:15,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:15,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:15,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:15,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:52:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:15,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:52:15,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:16,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:52:17,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:17,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76488993] [2021-10-28 23:52:17,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76488993] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:17,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:17,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 23:52:17,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269085179] [2021-10-28 23:52:17,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:52:17,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:52:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:52:17,059 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:17,864 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2021-10-28 23:52:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:52:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 23:52:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:17,875 INFO L225 Difference]: With dead ends: 87 [2021-10-28 23:52:17,876 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 23:52:17,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:52:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 23:52:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-10-28 23:52:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-10-28 23:52:17,884 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2021-10-28 23:52:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:17,885 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-10-28 23:52:17,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-10-28 23:52:17,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:52:17,887 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:17,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:17,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:52:18,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:18,098 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:18,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2021-10-28 23:52:18,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:18,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810988294] [2021-10-28 23:52:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:18,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:18,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:18,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:18,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:52:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:18,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:52:18,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:52:18,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:52:18,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:18,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810988294] [2021-10-28 23:52:18,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810988294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:18,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:18,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:52:18,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571044713] [2021-10-28 23:52:18,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:52:18,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:18,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:52:18,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:52:18,718 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2021-10-28 23:52:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:18,904 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2021-10-28 23:52:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:52:18,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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 32 [2021-10-28 23:52:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:18,907 INFO L225 Difference]: With dead ends: 84 [2021-10-28 23:52:18,907 INFO L226 Difference]: Without dead ends: 55 [2021-10-28 23:52:18,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:52:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-28 23:52:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-28 23:52:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2021-10-28 23:52:18,916 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2021-10-28 23:52:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:18,916 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2021-10-28 23:52:18,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2021-10-28 23:52:18,917 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2021-10-28 23:52:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:52:18,918 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:18,919 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:18,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:52:19,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:19,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2021-10-28 23:52:19,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:19,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262968251] [2021-10-28 23:52:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:19,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:19,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:19,140 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:19,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:52:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:19,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:52:19,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:52:19,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:52:20,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:20,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262968251] [2021-10-28 23:52:20,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262968251] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:52:20,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:52:20,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 23:52:20,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062617466] [2021-10-28 23:52:20,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:52:20,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:52:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:52:20,047 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:20,462 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2021-10-28 23:52:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:52:20,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-28 23:52:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:20,465 INFO L225 Difference]: With dead ends: 96 [2021-10-28 23:52:20,465 INFO L226 Difference]: Without dead ends: 67 [2021-10-28 23:52:20,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:52:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-28 23:52:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-10-28 23:52:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2021-10-28 23:52:20,476 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 38 [2021-10-28 23:52:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:20,477 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2021-10-28 23:52:20,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2021-10-28 23:52:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 23:52:20,479 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:20,480 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:20,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 23:52:20,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:20,682 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:20,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1788073277, now seen corresponding path program 2 times [2021-10-28 23:52:20,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:20,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928306370] [2021-10-28 23:52:20,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:52:20,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:20,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:20,686 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:20,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:52:20,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:52:20,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:52:20,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:52:20,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-28 23:52:21,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-28 23:52:22,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:22,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928306370] [2021-10-28 23:52:22,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928306370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:22,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:22,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:52:22,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655086783] [2021-10-28 23:52:22,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:52:22,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:52:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:52:22,265 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:22,598 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-28 23:52:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:52:22,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-28 23:52:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:22,600 INFO L225 Difference]: With dead ends: 96 [2021-10-28 23:52:22,601 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 23:52:22,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:52:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 23:52:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-28 23:52:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-10-28 23:52:22,612 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 50 [2021-10-28 23:52:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:22,613 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-10-28 23:52:22,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-10-28 23:52:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-28 23:52:22,616 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:22,616 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:22,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-28 23:52:22,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:22,833 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 1 times [2021-10-28 23:52:22,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:22,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763264222] [2021-10-28 23:52:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:52:22,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:22,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:22,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:22,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:52:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:52:23,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:52:23,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:52:24,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:52:25,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:25,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763264222] [2021-10-28 23:52:25,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763264222] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:52:25,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:52:25,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-28 23:52:25,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743108] [2021-10-28 23:52:25,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:52:25,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:52:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:52:25,006 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:26,093 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2021-10-28 23:52:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:52:26,094 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 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 56 [2021-10-28 23:52:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:26,096 INFO L225 Difference]: With dead ends: 136 [2021-10-28 23:52:26,096 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 23:52:26,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:52:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 23:52:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-28 23:52:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2021-10-28 23:52:26,110 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 56 [2021-10-28 23:52:26,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:26,110 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2021-10-28 23:52:26,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2021-10-28 23:52:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-28 23:52:26,114 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:52:26,114 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:26,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:52:26,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:26,334 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:52:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:52:26,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1054865405, now seen corresponding path program 2 times [2021-10-28 23:52:26,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:52:26,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307373829] [2021-10-28 23:52:26,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:52:26,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:52:26,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:52:26,337 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:52:26,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:52:26,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:52:26,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:52:26,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:52:26,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:52:26,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-10-28 23:52:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-10-28 23:52:27,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:52:28,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-10-28 23:52:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-10-28 23:52:28,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:52:28,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307373829] [2021-10-28 23:52:28,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307373829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:52:28,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:52:28,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:52:28,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033716555] [2021-10-28 23:52:28,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:52:28,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:52:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:52:28,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:52:28,359 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:28,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:52:28,445 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2021-10-28 23:52:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:52:28,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-28 23:52:28,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:52:28,447 INFO L225 Difference]: With dead ends: 99 [2021-10-28 23:52:28,447 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:52:28,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:52:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:52:28,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:52:28,450 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) [2021-10-28 23:52:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:52:28,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2021-10-28 23:52:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:52:28,451 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:52:28,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:52:28,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:52:28,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:52:28,455 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:52:28,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-28 23:52:28,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:52:28,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:52:28,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:28,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:52:29,125 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-10-28 23:52:29,125 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2021-10-28 23:52:29,125 INFO L857 garLoopResultBuilder]: For program point L60-2(lines 60 63) no Hoare annotation was computed. [2021-10-28 23:52:29,125 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (= ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x)) [2021-10-28 23:52:29,126 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 21 129) no Hoare annotation was computed. [2021-10-28 23:52:29,126 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2021-10-28 23:52:29,126 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 52 53) the Hoare annotation is: false [2021-10-28 23:52:29,126 INFO L857 garLoopResultBuilder]: For program point L52-4(lines 52 53) no Hoare annotation was computed. [2021-10-28 23:52:29,126 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-10-28 23:52:29,126 INFO L857 garLoopResultBuilder]: For program point L110-2(lines 110 111) no Hoare annotation was computed. [2021-10-28 23:52:29,126 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 116) no Hoare annotation was computed. [2021-10-28 23:52:29,126 INFO L860 garLoopResultBuilder]: At program point L160(lines 143 161) the Hoare annotation is: true [2021-10-28 23:52:29,127 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:52:29,127 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:52:29,127 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 120) no Hoare annotation was computed. [2021-10-28 23:52:29,127 INFO L857 garLoopResultBuilder]: For program point L119-2(lines 119 120) no Hoare annotation was computed. [2021-10-28 23:52:29,127 INFO L853 garLoopResultBuilder]: At program point L128(lines 21 129) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|)) [2021-10-28 23:52:29,127 INFO L857 garLoopResultBuilder]: For program point L87(lines 87 96) no Hoare annotation was computed. [2021-10-28 23:52:29,127 INFO L857 garLoopResultBuilder]: For program point L87-2(lines 87 96) no Hoare annotation was computed. [2021-10-28 23:52:29,128 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 57) no Hoare annotation was computed. [2021-10-28 23:52:29,128 INFO L857 garLoopResultBuilder]: For program point L46-2(lines 46 57) no Hoare annotation was computed. [2021-10-28 23:52:29,128 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-10-28 23:52:29,128 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-10-28 23:52:29,128 INFO L853 garLoopResultBuilder]: At program point L71-2(lines 71 81) the Hoare annotation is: false [2021-10-28 23:52:29,128 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2021-10-28 23:52:29,128 INFO L857 garLoopResultBuilder]: For program point L71-3(lines 71 81) no Hoare annotation was computed. [2021-10-28 23:52:29,128 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2021-10-28 23:52:29,129 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2021-10-28 23:52:29,129 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-28 23:52:29,129 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-28 23:52:29,129 INFO L857 garLoopResultBuilder]: For program point L89(lines 89 90) no Hoare annotation was computed. [2021-10-28 23:52:29,129 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 122 127) no Hoare annotation was computed. [2021-10-28 23:52:29,129 INFO L857 garLoopResultBuilder]: For program point L155-2(lines 155 158) no Hoare annotation was computed. [2021-10-28 23:52:29,129 INFO L853 garLoopResultBuilder]: At program point L122-2(lines 122 127) the Hoare annotation is: false [2021-10-28 23:52:29,129 INFO L857 garLoopResultBuilder]: For program point L89-2(lines 89 90) no Hoare annotation was computed. [2021-10-28 23:52:29,130 INFO L857 garLoopResultBuilder]: For program point L122-3(lines 122 127) no Hoare annotation was computed. [2021-10-28 23:52:29,130 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2021-10-28 23:52:29,130 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 77) no Hoare annotation was computed. [2021-10-28 23:52:29,130 INFO L857 garLoopResultBuilder]: For program point L73-2(lines 73 77) no Hoare annotation was computed. [2021-10-28 23:52:29,130 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:52:29,130 INFO L857 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2021-10-28 23:52:29,130 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2021-10-28 23:52:29,131 INFO L853 garLoopResultBuilder]: At program point L140(lines 131 141) the Hoare annotation is: (and (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|) ULTIMATE.start___signbit_double_~msw~0) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short14| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0)) [2021-10-28 23:52:29,131 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-10-28 23:52:29,131 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:52:29,131 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 93) no Hoare annotation was computed. [2021-10-28 23:52:29,131 INFO L857 garLoopResultBuilder]: For program point L92-2(lines 92 93) no Hoare annotation was computed. [2021-10-28 23:52:29,131 INFO L853 garLoopResultBuilder]: At program point L84-2(lines 84 100) the Hoare annotation is: false [2021-10-28 23:52:29,131 INFO L857 garLoopResultBuilder]: For program point L84-3(lines 21 129) no Hoare annotation was computed. [2021-10-28 23:52:29,131 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 114) no Hoare annotation was computed. [2021-10-28 23:52:29,132 INFO L857 garLoopResultBuilder]: For program point L134-1(lines 134 138) no Hoare annotation was computed. [2021-10-28 23:52:29,132 INFO L853 garLoopResultBuilder]: At program point L134-2(lines 134 138) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short14| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0)) [2021-10-28 23:52:29,132 INFO L857 garLoopResultBuilder]: For program point L134-3(lines 134 138) no Hoare annotation was computed. [2021-10-28 23:52:29,143 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:52:29,144 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:52:29,185 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,186 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,186 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,186 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,187 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:52:29 BoogieIcfgContainer [2021-10-28 23:52:29,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:52:29,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:52:29,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:52:29,193 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:52:29,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:52:07" (3/4) ... [2021-10-28 23:52:29,201 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:52:29,219 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 23:52:29,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 23:52:29,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:52:29,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:52:29,258 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result [2021-10-28 23:52:29,260 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-res == 0.0 && __signbit_double(res) == 0-aux && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res [2021-10-28 23:52:29,262 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res [2021-10-28 23:52:29,310 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:52:29,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:52:29,313 INFO L168 Benchmark]: Toolchain (without parser) took 27655.55 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 38.4 MB in the beginning and 50.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:52:29,313 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 58.7 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:52:29,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.63 ms. Allocated memory is still 58.7 MB. Free memory was 38.2 MB in the beginning and 40.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:52:29,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.99 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:52:29,315 INFO L168 Benchmark]: Boogie Preprocessor took 63.77 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 36.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:52:29,316 INFO L168 Benchmark]: RCFGBuilder took 4792.57 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.6 MB in the beginning and 55.9 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:52:29,317 INFO L168 Benchmark]: TraceAbstraction took 22158.92 ms. Allocated memory is still 75.5 MB. Free memory was 55.4 MB in the beginning and 54.9 MB in the end (delta: 493.6 kB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:52:29,317 INFO L168 Benchmark]: Witness Printer took 117.96 ms. Allocated memory is still 75.5 MB. Free memory was 54.9 MB in the beginning and 50.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:52:29,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 58.7 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.63 ms. Allocated memory is still 58.7 MB. Free memory was 38.2 MB in the beginning and 40.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.99 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.77 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 36.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4792.57 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.6 MB in the beginning and 55.9 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22158.92 ms. Allocated memory is still 75.5 MB. Free memory was 55.4 MB in the beginning and 54.9 MB in the end (delta: 493.6 kB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. * Witness Printer took 117.96 ms. Allocated memory is still 75.5 MB. Free memory was 54.9 MB in the beginning and 50.8 MB in the end (delta: 4.2 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[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: 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, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.0s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 545 SDtfs, 610 SDslu, 1266 SDs, 0 SdLazy, 482 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 66 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 326 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 632 ConstructedInterpolants, 26 QuantifiedInterpolants, 1658 SizeOfPredicates, 36 NumberOfNonLiveVariables, 799 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 706/818 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: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((aux-res == 0.0 && __signbit_double(res) == 0-aux && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant [2021-10-28 23:52:29,336 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,337 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,339 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,339 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,340 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,343 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,344 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-28 23:52:29,344 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: sign == 2147483648bv32 && ~Pluszero~LONGDOUBLE() == x RESULT: Ultimate proved your program to be correct! [2021-10-28 23:52:29,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9e68ef-2f6d-4c5c-8787-893028d458da/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...