./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 ............................................................................................................................................................................................................................................................................................................................................. 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_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:26:25,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:26:25,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:26:25,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:26:25,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:26:25,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:26:25,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:26:25,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:26:25,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:26:25,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:26:25,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:26:25,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:26:25,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:26:25,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:26:25,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:26:25,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:26:25,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:26:25,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:26:25,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:26:25,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:26:25,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:26:25,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:26:25,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:26:25,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:26:25,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:26:25,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:26:25,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:26:25,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:26:25,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:26:25,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:26:25,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:26:25,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:26:25,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:26:25,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:26:25,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:26:25,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:26:25,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:26:25,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:26:25,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:26:25,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:26:25,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:26:25,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:26:25,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:26:25,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:26:25,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:26:25,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:26:25,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:26:25,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:26:25,827 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:26:25,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:26:25,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:26:25,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:26:25,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:26:25,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:26:25,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:26:25,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:26:25,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:26:25,830 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:26:25,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:26:25,830 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:26:25,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:26:25,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:26:25,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:26:25,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:26:25,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:25,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:26:25,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:26:25,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:26:25,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:26:25,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:26:25,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:26:25,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:26:25,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:26:25,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:26:25,835 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_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 [2021-10-21 20:26:26,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:26:26,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:26:26,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:26:26,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:26:26,148 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:26:26,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-21 20:26:26,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/c4ad71701/d074a1a8c364427da80e1604d88d097c/FLAGcf067505a [2021-10-21 20:26:26,711 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:26:26,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-21 20:26:26,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/c4ad71701/d074a1a8c364427da80e1604d88d097c/FLAGcf067505a [2021-10-21 20:26:27,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/c4ad71701/d074a1a8c364427da80e1604d88d097c [2021-10-21 20:26:27,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:26:27,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:26:27,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:27,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:26:27,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:26:27,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7391739d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27, skipping insertion in model container [2021-10-21 20:26:27,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:26:27,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:26:27,349 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_63148cf4-9c8e-4284-8d8c-9c04c19ec998/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-21 20:26:27,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:27,363 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:26:27,416 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_63148cf4-9c8e-4284-8d8c-9c04c19ec998/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-21 20:26:27,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:27,435 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:26:27,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27 WrapperNode [2021-10-21 20:26:27,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:27,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:27,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:26:27,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:26:27,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:27,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:26:27,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:26:27,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:26:27,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:26:27,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:26:27,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:26:27,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:26:27,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (1/1) ... [2021-10-21 20:26:27,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:27,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:27,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:26:27,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:26:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:26:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:26:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-21 20:26:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:26:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-21 20:26:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:26:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:26:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:26:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-21 20:26:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:26:28,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:26:28,406 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-21 20:26:28,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:28 BoogieIcfgContainer [2021-10-21 20:26:28,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:26:28,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:26:28,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:26:28,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:26:28,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:26:27" (1/3) ... [2021-10-21 20:26:28,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4647af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:26:28, skipping insertion in model container [2021-10-21 20:26:28,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:27" (2/3) ... [2021-10-21 20:26:28,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4647af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:26:28, skipping insertion in model container [2021-10-21 20:26:28,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:28" (3/3) ... [2021-10-21 20:26:28,419 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660b.c [2021-10-21 20:26:28,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:26:28,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:26:28,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:26:28,474 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:26:28,474 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:26:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:26:28,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:28,499 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:28,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:28,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:28,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2021-10-21 20:26:28,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:28,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229074189] [2021-10-21 20:26:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:28,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:28,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:28,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229074189] [2021-10-21 20:26:28,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229074189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:28,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:28,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:26:28,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621834617] [2021-10-21 20:26:28,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:26:28,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:28,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:26:28,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:26:28,800 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:28,847 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2021-10-21 20:26:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:26:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2021-10-21 20:26:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:28,863 INFO L225 Difference]: With dead ends: 227 [2021-10-21 20:26:28,863 INFO L226 Difference]: Without dead ends: 111 [2021-10-21 20:26:28,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:26:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-21 20:26:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-21 20:26:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 110 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2021-10-21 20:26:28,928 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2021-10-21 20:26:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:28,928 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2021-10-21 20:26:28,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:26:28,929 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2021-10-21 20:26:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:26:28,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:28,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:28,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:26:28,932 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2021-10-21 20:26:28,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:28,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169535296] [2021-10-21 20:26:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:28,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:26:29,033 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:26:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:26:29,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:26:29,165 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:26:29,167 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:29,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:26:29,176 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:26:29,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:26:29 BoogieIcfgContainer [2021-10-21 20:26:29,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:26:29,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:26:29,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:26:29,250 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:26:29,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:26:28" (3/4) ... [2021-10-21 20:26:29,254 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:26:29,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:26:29,257 INFO L168 Benchmark]: Toolchain (without parser) took 2189.75 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 54.7 MB in the beginning and 65.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:29,259 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:29,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.44 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 54.5 MB in the beginning and 101.4 MB in the end (delta: -46.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:29,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.44 ms. Allocated memory is still 130.0 MB. Free memory was 101.4 MB in the beginning and 98.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:29,269 INFO L168 Benchmark]: Boogie Preprocessor took 59.94 ms. Allocated memory is still 130.0 MB. Free memory was 98.0 MB in the beginning and 95.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:29,269 INFO L168 Benchmark]: RCFGBuilder took 839.07 ms. Allocated memory is still 130.0 MB. Free memory was 95.1 MB in the beginning and 103.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:29,270 INFO L168 Benchmark]: TraceAbstraction took 836.23 ms. Allocated memory is still 130.0 MB. Free memory was 103.1 MB in the beginning and 66.3 MB in the end (delta: 36.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:29,271 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 130.0 MB. Free memory was 66.3 MB in the beginning and 65.7 MB in the end (delta: 581.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:29,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.44 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 54.5 MB in the beginning and 101.4 MB in the end (delta: -46.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.44 ms. Allocated memory is still 130.0 MB. Free memory was 101.4 MB in the beginning and 98.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.94 ms. Allocated memory is still 130.0 MB. Free memory was 98.0 MB in the beginning and 95.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 839.07 ms. Allocated memory is still 130.0 MB. Free memory was 95.1 MB in the beginning and 103.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 836.23 ms. Allocated memory is still 130.0 MB. Free memory was 103.1 MB in the beginning and 66.3 MB in the end (delta: 36.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 130.0 MB. Free memory was 66.3 MB in the beginning and 65.7 MB in the end (delta: 581.7 kB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 261]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 260. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L252] double x = __VERIFIER_nondet_double(); [L253] double y = 0.0; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L255] COND TRUE x < 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != pi VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L261] reach_error() VAL [aT_atan={6:0}, atanhi_atan={9:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 708.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.5ms, AutomataDifference: 88.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 164 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.6ms SsaConstructionTime, 152.2ms SatisfiabilityAnalysisTime, 88.8ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 [2021-10-21 20:26:29,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 20:26:31,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:26:31,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:26:31,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:26:31,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:26:31,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:26:31,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:26:31,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:26:31,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:26:31,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:26:31,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:26:31,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:26:31,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:26:31,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:26:31,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:26:31,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:26:31,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:26:31,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:26:31,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:26:31,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:26:31,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:26:31,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:26:31,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:26:31,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:26:31,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:26:31,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:26:31,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:26:31,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:26:31,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:26:31,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:26:31,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:26:31,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:26:31,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:26:31,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:26:31,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:26:31,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:26:31,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:26:31,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:26:31,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:26:31,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:26:31,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:26:31,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:26:31,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:26:31,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:26:31,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:26:31,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:26:31,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:26:31,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:26:31,813 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:26:31,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:26:31,813 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:26:31,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:26:31,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:26:31,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:26:31,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:26:31,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:26:31,816 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:26:31,816 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:26:31,816 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:26:31,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:26:31,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:26:31,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:26:31,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:26:31,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:26:31,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:26:31,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:31,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:26:31,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:26:31,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:26:31,819 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:26:31,819 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:26:31,820 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:26:31,820 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:26:31,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:26:31,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:26:31,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:26:31,821 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_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b6f2248fef0dd5c7754a6fb4a3f6f7201620c77059d6480978fc928d68c4f15 [2021-10-21 20:26:32,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:26:32,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:26:32,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:26:32,224 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:26:32,225 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:26:32,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-21 20:26:32,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/f5902a14d/d868d0870782471898dcb63a04758831/FLAGdb3397e22 [2021-10-21 20:26:32,932 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:26:32,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c [2021-10-21 20:26:32,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/f5902a14d/d868d0870782471898dcb63a04758831/FLAGdb3397e22 [2021-10-21 20:26:33,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/data/f5902a14d/d868d0870782471898dcb63a04758831 [2021-10-21 20:26:33,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:26:33,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:26:33,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:33,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:26:33,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:26:33,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1814f109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33, skipping insertion in model container [2021-10-21 20:26:33,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:26:33,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:26:33,631 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_63148cf4-9c8e-4284-8d8c-9c04c19ec998/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-21 20:26:33,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:33,651 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:26:33,715 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_63148cf4-9c8e-4284-8d8c-9c04c19ec998/sv-benchmarks/c/float-newlib/double_req_bl_0660b.c[6212,6225] [2021-10-21 20:26:33,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:26:33,749 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:26:33,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33 WrapperNode [2021-10-21 20:26:33,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:26:33,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:33,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:26:33,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:26:33,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:26:33,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:26:33,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:26:33,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:26:33,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:26:33,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:26:33,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:26:33,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:26:33,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (1/1) ... [2021-10-21 20:26:33,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:26:33,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:33,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:26:33,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:26:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-21 20:26:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-21 20:26:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:26:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:26:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-21 20:26:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:26:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:26:34,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:26:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:26:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:27:14,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:27:14,689 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-21 20:27:14,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:14 BoogieIcfgContainer [2021-10-21 20:27:14,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:27:14,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:27:14,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:27:14,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:27:14,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:26:33" (1/3) ... [2021-10-21 20:27:14,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402a646d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:27:14, skipping insertion in model container [2021-10-21 20:27:14,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:26:33" (2/3) ... [2021-10-21 20:27:14,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402a646d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:27:14, skipping insertion in model container [2021-10-21 20:27:14,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:14" (3/3) ... [2021-10-21 20:27:14,701 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0660b.c [2021-10-21 20:27:14,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:27:14,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:27:14,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:27:14,765 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:27:14,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:27:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:27:14,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:14,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:14,789 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:27:14,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:14,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1059427896, now seen corresponding path program 1 times [2021-10-21 20:27:14,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:14,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562135841] [2021-10-21 20:27:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:14,808 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:14,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:14,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:14,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:27:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:15,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:27:15,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:15,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:15,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:27:15,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562135841] [2021-10-21 20:27:15,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562135841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:27:15,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:27:15,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:27:15,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130241171] [2021-10-21 20:27:15,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:27:15,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:27:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:27:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:27:15,733 INFO L87 Difference]: Start difference. First operand has 115 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 114 states have internal predecessors, (193), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:27:15,768 INFO L93 Difference]: Finished difference Result 227 states and 382 transitions. [2021-10-21 20:27:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:27:15,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 [2021-10-21 20:27:15,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:27:15,780 INFO L225 Difference]: With dead ends: 227 [2021-10-21 20:27:15,780 INFO L226 Difference]: Without dead ends: 111 [2021-10-21 20:27:15,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:27:15,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-21 20:27:15,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-21 20:27:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 110 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2021-10-21 20:27:15,823 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 11 [2021-10-21 20:27:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:27:15,824 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2021-10-21 20:27:15,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:27:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2021-10-21 20:27:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:27:15,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:27:15,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:27:15,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:27:16,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:27:16,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:27:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:27:16,049 INFO L82 PathProgramCache]: Analyzing trace with hash -7417919, now seen corresponding path program 1 times [2021-10-21 20:27:16,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:27:16,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764944054] [2021-10-21 20:27:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:27:16,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:27:16,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:27:16,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:27:16,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:27:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:27:16,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:27:16,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:27:17,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2021-10-21 20:27:20,097 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:27:20,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2021-10-21 20:27:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:27:22,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:27:47,786 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 74 treesize of output 70 [2021-10-21 20:28:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:13,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:28:13,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764944054] [2021-10-21 20:28:13,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764944054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:13,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:13,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-21 20:28:13,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372634340] [2021-10-21 20:28:13,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:28:13,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:28:13,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:28:13,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=129, Unknown=22, NotChecked=0, Total=182 [2021-10-21 20:28:13,355 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:35,644 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ +zero 11 53) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start___ieee754_atan2_~y (_ +zero 11 53)) (forall ((|v_skolemized_q#valueAsBitvector_32| (_ BitVec 64))) (or (and (not (bvugt (bvor c_ULTIMATE.start___ieee754_atan2_~ix~1 (bvlshr (bvor c_ULTIMATE.start___ieee754_atan2_~lx~0 (bvneg c_ULTIMATE.start___ieee754_atan2_~lx~0)) (_ bv31 32))) (_ bv2146435072 32))) (forall ((ULTIMATE.start___ieee754_atan2_~ly~0 (_ BitVec 32))) (not (bvugt (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_32|)) (bvlshr (bvor ULTIMATE.start___ieee754_atan2_~ly~0 (bvneg ULTIMATE.start___ieee754_atan2_~ly~0)) (_ bv31 32))) (_ bv2146435072 32))))) (not (= c_ULTIMATE.start___ieee754_atan2_~y (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_32|)))))) (fp.lt c_ULTIMATE.start___ieee754_atan2_~x (_ +zero 11 53)) (exists ((|v_skolemized_q#valueAsBitvector_32| (_ BitVec 64))) (and (= c_ULTIMATE.start___ieee754_atan2_~hy~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_32|)) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_32|))))) (exists ((|v_skolemized_q#valueAsBitvector_31| (_ BitVec 64))) (and (= (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_31|)) c_ULTIMATE.start___ieee754_atan2_~ix~1) (= c_ULTIMATE.start___ieee754_atan2_~lx~0 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_31|)) (fp.lt (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_31|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_31|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_31|)) (_ +zero 11 53)))) (forall ((|v_skolemized_q#valueAsBitvector_32| (_ BitVec 64))) (or (not (= c_ULTIMATE.start___ieee754_atan2_~y (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_32|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_32|)))) (and (not (bvugt (bvor (bvand (_ bv2147483647 32) c_ULTIMATE.start___ieee754_atan2_~hx~1) (bvlshr (bvor c_ULTIMATE.start___ieee754_atan2_~lx~0 (bvneg c_ULTIMATE.start___ieee754_atan2_~lx~0)) (_ bv31 32))) (_ bv2146435072 32))) (forall ((ULTIMATE.start___ieee754_atan2_~ly~0 (_ BitVec 32))) (not (bvugt (bvor (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_32|)) (bvlshr (bvor ULTIMATE.start___ieee754_atan2_~ly~0 (bvneg ULTIMATE.start___ieee754_atan2_~ly~0)) (_ bv31 32))) (_ bv2146435072 32)))))))) is different from false [2021-10-21 20:28:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:58,505 INFO L93 Difference]: Finished difference Result 161 states and 226 transitions. [2021-10-21 20:28:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:28:58,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 20:28:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:58,586 INFO L225 Difference]: With dead ends: 161 [2021-10-21 20:28:58,587 INFO L226 Difference]: Without dead ends: 102 [2021-10-21 20:28:58,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 71037.6ms TimeCoverageRelationStatistics Valid=66, Invalid=212, Unknown=32, NotChecked=32, Total=342 [2021-10-21 20:28:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-21 20:28:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-21 20:28:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions. [2021-10-21 20:28:58,603 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 13 [2021-10-21 20:28:58,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:58,604 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions. [2021-10-21 20:28:58,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions. [2021-10-21 20:28:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:28:58,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:58,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:58,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:58,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:28:58,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:58,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1171723193, now seen corresponding path program 1 times [2021-10-21 20:28:58,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:28:58,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441379455] [2021-10-21 20:28:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:58,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:28:58,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:28:58,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:28:58,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:28:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:59,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:28:59,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:29:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:01,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:29:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:06,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:29:06,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441379455] [2021-10-21 20:29:06,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441379455] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:06,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:06,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-21 20:29:06,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361669367] [2021-10-21 20:29:06,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:29:06,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:29:06,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:29:06,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=53, Unknown=1, NotChecked=0, Total=72 [2021-10-21 20:29:06,066 INFO L87 Difference]: Start difference. First operand 102 states and 140 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:29:10,651 INFO L93 Difference]: Finished difference Result 165 states and 227 transitions. [2021-10-21 20:29:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:29:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 20:29:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:29:10,653 INFO L225 Difference]: With dead ends: 165 [2021-10-21 20:29:10,653 INFO L226 Difference]: Without dead ends: 76 [2021-10-21 20:29:10,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6783.6ms TimeCoverageRelationStatistics Valid=44, Invalid=87, Unknown=1, NotChecked=0, Total=132 [2021-10-21 20:29:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-21 20:29:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-21 20:29:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2021-10-21 20:29:10,673 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 18 [2021-10-21 20:29:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:29:10,673 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2021-10-21 20:29:10,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2021-10-21 20:29:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:29:10,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:29:10,674 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:10,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:29:10,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:29:10,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:29:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:10,875 INFO L82 PathProgramCache]: Analyzing trace with hash -960415812, now seen corresponding path program 1 times [2021-10-21 20:29:10,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:29:10,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795851529] [2021-10-21 20:29:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:10,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:29:10,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:29:10,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:29:10,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:29:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:11,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:29:11,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:29:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:17,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:29:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:21,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:29:21,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795851529] [2021-10-21 20:29:21,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795851529] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:21,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:21,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-21 20:29:21,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620655959] [2021-10-21 20:29:21,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:29:21,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:29:21,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:29:21,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=52, Unknown=2, NotChecked=0, Total=72 [2021-10-21 20:29:21,311 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:29:26,302 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2021-10-21 20:29:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:29:26,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-21 20:29:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:29:26,304 INFO L225 Difference]: With dead ends: 95 [2021-10-21 20:29:26,304 INFO L226 Difference]: Without dead ends: 91 [2021-10-21 20:29:26,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8374.4ms TimeCoverageRelationStatistics Valid=44, Invalid=86, Unknown=2, NotChecked=0, Total=132 [2021-10-21 20:29:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-21 20:29:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-21 20:29:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 75 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) [2021-10-21 20:29:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-21 20:29:26,315 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 19 [2021-10-21 20:29:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:29:26,316 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-21 20:29:26,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:29:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-21 20:29:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:29:26,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:29:26,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:29:26,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:29:26,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:29:26,539 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:29:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:29:26,540 INFO L82 PathProgramCache]: Analyzing trace with hash -195557417, now seen corresponding path program 1 times [2021-10-21 20:29:26,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:29:26,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531418804] [2021-10-21 20:29:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:29:26,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:29:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:29:26,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:29:26,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:29:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:29:26,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:29:26,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:29:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:31,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:29:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:29:40,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:29:40,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531418804] [2021-10-21 20:29:40,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531418804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:29:40,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:29:40,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-21 20:29:40,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906492611] [2021-10-21 20:29:40,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:29:40,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:29:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:29:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:29:40,998 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:23,200 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2021-10-21 20:30:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:30:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-21 20:30:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:23,231 INFO L225 Difference]: With dead ends: 95 [2021-10-21 20:30:23,231 INFO L226 Difference]: Without dead ends: 91 [2021-10-21 20:30:23,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 7889.6ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:30:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-21 20:30:23,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-10-21 20:30:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-10-21 20:30:23,241 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 19 [2021-10-21 20:30:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:23,242 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-10-21 20:30:23,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-10-21 20:30:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:30:23,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:23,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:23,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:23,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:30:23,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:30:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:23,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1774047840, now seen corresponding path program 1 times [2021-10-21 20:30:23,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:30:23,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717541113] [2021-10-21 20:30:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:23,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:30:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:30:23,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:30:23,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:30:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:23,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:30:23,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:28,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:30:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:33,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:30:33,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717541113] [2021-10-21 20:30:33,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717541113] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:33,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:33,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-21 20:30:33,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313497397] [2021-10-21 20:30:33,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:30:33,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:30:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:30:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:30:33,717 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:40,606 INFO L93 Difference]: Finished difference Result 134 states and 172 transitions. [2021-10-21 20:30:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:30:40,608 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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 20 [2021-10-21 20:30:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:40,610 INFO L225 Difference]: With dead ends: 134 [2021-10-21 20:30:40,610 INFO L226 Difference]: Without dead ends: 70 [2021-10-21 20:30:40,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 9356.6ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:30:40,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-21 20:30:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-21 20:30:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 69 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2021-10-21 20:30:40,631 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 20 [2021-10-21 20:30:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:40,631 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2021-10-21 20:30:40,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2021-10-21 20:30:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:30:40,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:40,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:40,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:40,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:30:40,843 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:30:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1297758981, now seen corresponding path program 1 times [2021-10-21 20:30:40,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:30:40,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31906547] [2021-10-21 20:30:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:40,844 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:30:40,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:30:40,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:30:40,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:30:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:41,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:30:41,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:46,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:30:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:52,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:30:52,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31906547] [2021-10-21 20:30:52,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31906547] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:52,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:52,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-21 20:30:52,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819692890] [2021-10-21 20:30:52,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:30:52,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:30:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:30:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:30:52,070 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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) [2021-10-21 20:30:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:56,986 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2021-10-21 20:30:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:30:57,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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 21 [2021-10-21 20:30:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:57,187 INFO L225 Difference]: With dead ends: 89 [2021-10-21 20:30:57,187 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 20:30:57,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 10252.6ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:30:57,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 20:30:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2021-10-21 20:30:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 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) [2021-10-21 20:30:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-10-21 20:30:57,198 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 21 [2021-10-21 20:30:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:57,199 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-10-21 20:30:57,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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) [2021-10-21 20:30:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-10-21 20:30:57,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:30:57,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:57,200 INFO L512 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] [2021-10-21 20:30:57,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-21 20:30:57,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:30:57,419 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:30:57,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:57,419 INFO L82 PathProgramCache]: Analyzing trace with hash 622691325, now seen corresponding path program 1 times [2021-10-21 20:30:57,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:30:57,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286523551] [2021-10-21 20:30:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:57,420 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:30:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:30:57,422 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:30:57,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:30:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:58,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:30:58,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:31:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:31:03,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:31:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:31:08,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:31:08,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286523551] [2021-10-21 20:31:08,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286523551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:31:08,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:31:08,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-21 20:31:08,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022710794] [2021-10-21 20:31:08,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:31:08,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:31:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:31:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:31:08,831 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:31:14,473 INFO L93 Difference]: Finished difference Result 120 states and 152 transitions. [2021-10-21 20:31:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:31:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 20:31:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:31:14,477 INFO L225 Difference]: With dead ends: 120 [2021-10-21 20:31:14,477 INFO L226 Difference]: Without dead ends: 64 [2021-10-21 20:31:14,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 9775.7ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:31:14,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-21 20:31:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-21 20:31:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-10-21 20:31:14,489 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 22 [2021-10-21 20:31:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:31:14,490 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-10-21 20:31:14,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-10-21 20:31:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:31:14,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:31:14,491 INFO L512 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] [2021-10-21 20:31:14,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-21 20:31:14,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:31:14,712 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:31:14,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:31:14,713 INFO L82 PathProgramCache]: Analyzing trace with hash -804510387, now seen corresponding path program 1 times [2021-10-21 20:31:14,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:31:14,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032394250] [2021-10-21 20:31:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:31:14,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:31:14,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:31:14,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:31:14,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 20:31:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:31:15,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:31:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:31:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:31:16,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:31:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:31:17,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:31:17,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032394250] [2021-10-21 20:31:17,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032394250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:31:17,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:31:17,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-21 20:31:17,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332548508] [2021-10-21 20:31:17,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:31:17,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:31:17,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:31:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:31:17,911 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:26,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:31:26,243 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2021-10-21 20:31:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:31:26,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 20:31:26,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:31:26,246 INFO L225 Difference]: With dead ends: 83 [2021-10-21 20:31:26,246 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 20:31:26,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1575.4ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:31:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 20:31:26,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2021-10-21 20:31:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-10-21 20:31:26,257 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 22 [2021-10-21 20:31:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:31:26,257 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-10-21 20:31:26,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:31:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-10-21 20:31:26,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:31:26,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:31:26,259 INFO L512 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] [2021-10-21 20:31:26,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:31:26,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:31:26,475 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:31:26,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:31:26,475 INFO L82 PathProgramCache]: Analyzing trace with hash 3554504, now seen corresponding path program 1 times [2021-10-21 20:31:26,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:31:26,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200153453] [2021-10-21 20:31:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:31:26,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:31:26,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:31:26,477 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:31:26,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 20:31:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:31:27,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:31:27,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:31:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:31:33,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:32:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:32:06,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:32:06,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200153453] [2021-10-21 20:32:06,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200153453] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:32:06,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:32:06,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 20:32:06,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383931799] [2021-10-21 20:32:06,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:32:06,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:32:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:32:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=63, Unknown=4, NotChecked=0, Total=90 [2021-10-21 20:32:06,087 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:33:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:33:28,613 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-10-21 20:33:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:33:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-21 20:33:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:33:28,635 INFO L225 Difference]: With dead ends: 78 [2021-10-21 20:33:28,635 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 20:33:28,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 27613.4ms TimeCoverageRelationStatistics Valid=42, Invalid=86, Unknown=4, NotChecked=0, Total=132 [2021-10-21 20:33:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 20:33:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-21 20:33:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:33:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2021-10-21 20:33:28,642 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 24 [2021-10-21 20:33:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:33:28,642 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2021-10-21 20:33:28,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:33:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2021-10-21 20:33:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 20:33:28,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:33:28,644 INFO L512 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] [2021-10-21 20:33:28,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-21 20:33:28,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:33:28,847 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:33:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:33:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash 111855477, now seen corresponding path program 1 times [2021-10-21 20:33:28,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:33:28,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913271687] [2021-10-21 20:33:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:33:28,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:33:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:33:28,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:33:28,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 20:33:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:33:29,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:33:29,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:33:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:33:33,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:33:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:33:39,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:33:39,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913271687] [2021-10-21 20:33:39,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913271687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:33:39,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:33:39,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-10-21 20:33:39,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117291351] [2021-10-21 20:33:39,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:33:39,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:33:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:33:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:33:39,264 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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) [2021-10-21 20:33:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:33:46,225 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2021-10-21 20:33:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:33:46,226 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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 25 [2021-10-21 20:33:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:33:46,226 INFO L225 Difference]: With dead ends: 73 [2021-10-21 20:33:46,227 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 20:33:46,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 6779.8ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:33:46,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 20:33:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-21 20:33:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:33:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2021-10-21 20:33:46,253 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 25 [2021-10-21 20:33:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:33:46,253 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2021-10-21 20:33:46,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 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) [2021-10-21 20:33:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2021-10-21 20:33:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 20:33:46,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:33:46,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:33:46,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:33:46,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:33:46,459 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:33:46,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:33:46,459 INFO L82 PathProgramCache]: Analyzing trace with hash -490549731, now seen corresponding path program 1 times [2021-10-21 20:33:46,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:33:46,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268543782] [2021-10-21 20:33:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:33:46,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:33:46,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:33:46,461 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:33:46,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 20:33:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:33:47,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:33:47,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:33:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:33:57,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:34:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:34:04,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:34:04,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268543782] [2021-10-21 20:34:04,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268543782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:34:04,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:34:04,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 14 [2021-10-21 20:34:04,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657678603] [2021-10-21 20:34:04,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:34:04,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:34:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:34:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2021-10-21 20:34:04,836 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 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) [2021-10-21 20:34:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:34:38,714 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2021-10-21 20:34:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:34:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 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) Word has length 36 [2021-10-21 20:34:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:34:38,716 INFO L225 Difference]: With dead ends: 83 [2021-10-21 20:34:38,716 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 20:34:38,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 12285.5ms TimeCoverageRelationStatistics Valid=85, Invalid=255, Unknown=2, NotChecked=0, Total=342 [2021-10-21 20:34:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 20:34:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2021-10-21 20:34:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.196969696969697) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:34:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-10-21 20:34:38,728 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 36 [2021-10-21 20:34:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:34:38,728 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-10-21 20:34:38,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 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) [2021-10-21 20:34:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-10-21 20:34:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 20:34:38,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:34:38,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:34:38,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:34:38,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:34:38,947 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:34:38,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:34:38,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1072034200, now seen corresponding path program 1 times [2021-10-21 20:34:38,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:34:38,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583021960] [2021-10-21 20:34:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:34:38,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:34:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:34:38,958 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:34:39,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-21 20:34:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:34:40,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:34:40,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:34:47,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2021-10-21 20:34:53,242 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 20:34:53,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2021-10-21 20:36:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:36:08,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:37:00,051 WARN L838 $PredicateComparison]: unable to prove that (fp.eq (fp.sub c_currentRoundingMode c_~pi~0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_atan_double_#res| c_~pi_lo_atan2~0)) c_~pi~0) is different from false [2021-10-21 20:37:04,163 WARN L838 $PredicateComparison]: unable to prove that (fp.eq (fp.sub c_currentRoundingMode c_~pi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_atan_double_~x c_~pi_lo_atan2~0)) c_~pi~0) is different from false [2021-10-21 20:37:41,316 WARN L838 $PredicateComparison]: unable to prove that (or (not (bvslt (bvand (_ bv2147483647 32) c_ULTIMATE.start_atan_double_~hx~0) (_ bv1071382528 32))) (fp.eq (fp.sub c_currentRoundingMode c_~pi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_atan_double_~x c_~pi_lo_atan2~0)) c_~pi~0)) is different from false [2021-10-21 20:37:51,653 WARN L838 $PredicateComparison]: unable to prove that (or (fp.eq (fp.sub c_currentRoundingMode c_~pi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_atan_double_~x c_~pi_lo_atan2~0)) c_~pi~0) (forall ((|v_skolemized_q#valueAsBitvector_41| (_ BitVec 64))) (or (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_41|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_41|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_41|)) c_ULTIMATE.start_atan_double_~x)) (not (bvslt (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_41|)) (_ bv1071382528 32)))))) is different from false [2021-10-21 20:37:58,898 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|v_skolemized_q#valueAsBitvector_41| (_ BitVec 64))) (or (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_41|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_41|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_41|)) |c_ULTIMATE.start_fabs_double_#res|)) (not (bvslt (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_41|)) (_ bv1071382528 32))))) (fp.eq (fp.sub c_currentRoundingMode c_~pi~0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_fabs_double_#res| c_~pi_lo_atan2~0)) c_~pi~0)) is different from false [2021-10-21 20:38:06,430 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 20:38:06,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-21 20:38:06,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:38:06,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583021960] [2021-10-21 20:38:06,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-21 20:38:06,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [154544734] [2021-10-21 20:38:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:38:06,432 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 20:38:06,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 20:38:06,435 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 20:38:06,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-21 20:38:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:38:10,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:38:10,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@756d423e [2021-10-21 20:38:10,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352822733] [2021-10-21 20:38:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:38:10,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:38:10,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:38:10,616 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:38:10,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 20:38:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:38:11,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:38:11,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@756d423e [2021-10-21 20:38:11,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:38:11,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 20:38:11,925 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 20:38:11,925 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 20:38:11,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:38:12,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:38:12,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:38:12,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-21 20:38:12,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63148cf4-9c8e-4284-8d8c-9c04c19ec998/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt [2021-10-21 20:38:12,551 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:38:12,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:38:12 BoogieIcfgContainer [2021-10-21 20:38:12,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:38:12,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:38:12,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:38:12,570 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:38:12,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:27:14" (3/4) ... [2021-10-21 20:38:12,573 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:38:12,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:38:12,574 INFO L168 Benchmark]: Toolchain (without parser) took 699313.73 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 42.9 MB in the beginning and 24.1 MB in the end (delta: 18.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:12,575 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:38:12,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.68 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 40.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:12,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.59 ms. Allocated memory is still 62.9 MB. Free memory was 40.0 MB in the beginning and 36.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:12,576 INFO L168 Benchmark]: Boogie Preprocessor took 81.46 ms. Allocated memory is still 62.9 MB. Free memory was 36.6 MB in the beginning and 33.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:12,577 INFO L168 Benchmark]: RCFGBuilder took 40774.34 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 33.0 MB in the beginning and 50.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:12,577 INFO L168 Benchmark]: TraceAbstraction took 657876.20 ms. Allocated memory is still 77.6 MB. Free memory was 49.7 MB in the beginning and 24.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:38:12,577 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 77.6 MB. Free memory was 24.7 MB in the beginning and 24.1 MB in the end (delta: 589.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:38:12,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 485.68 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 40.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.59 ms. Allocated memory is still 62.9 MB. Free memory was 40.0 MB in the beginning and 36.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.46 ms. Allocated memory is still 62.9 MB. Free memory was 36.6 MB in the beginning and 33.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 40774.34 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 33.0 MB in the beginning and 50.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 657876.20 ms. Allocated memory is still 77.6 MB. Free memory was 49.7 MB in the beginning and 24.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.96 ms. Allocated memory is still 77.6 MB. Free memory was 24.7 MB in the beginning and 24.1 MB in the end (delta: 589.9 kB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 261]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L252] double x = __VERIFIER_nondet_double(); [L253] double y = 0.0; [L255] COND TRUE x < 0.0 [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND FALSE !(((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000)) [L166] COND FALSE !(((hx - 0x3ff00000) | lx) == 0) [L168] m = ((hy >> 31) & 1) | ((hx >> 30) & 2) [L170] COND FALSE !((iy | ly) == 0) [L182] COND FALSE !((ix | lx) == 0) [L185] COND FALSE !(ix == 0x7ff00000) [L211] COND FALSE !(iy == 0x7ff00000) [L214] k = (iy - ix) >> 20 [L215] COND FALSE !(k > 60) [L217] COND FALSE !(hx < 0 && k < -60) [L20] __uint32_t high; [L22] ieee_double_shape_type gh_u; [L23] gh_u.value = (x) [L24] EXPR gh_u.parts.msw [L24] (high) = gh_u.parts.msw [L27] ieee_double_shape_type sh_u; [L28] sh_u.value = (x) [L29] sh_u.parts.msw = (high & 0x7fffffff) [L30] EXPR sh_u.value [L30] (x) = sh_u.value [L32] return x; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff [L76] COND FALSE !(ix >= 0x44100000) [L90] COND TRUE ix < 0x3fdc0000 [L91] COND TRUE ix < 0x3e200000 [L92] COND TRUE huge_atan + x > one_atan [L93] return x; [L220] z = atan_double(fabs_double(y / x)) [L222] case 0: [L224] case 1: [L239] case 2: [L240] return pi - (z - pi_lo_atan2); [L257] double res = __ieee754_atan2(y, x); [L260] COND TRUE res != pi [L261] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 657793.1ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 21.3ms, AutomataDifference: 246512.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1047 SDtfs, 3233 SDslu, 2933 SDs, 0 SdLazy, 577 SolverSat, 85 SolverUnsat, 51 SolverUnknown, 0 SolverNotchecked, 185845.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 521 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 1 IntricatePredicates, 5 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 171725.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=0, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 172.3ms AutomataMinimizationTime, 12 MinimizatonAttempts, 54 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 193.3ms SsaConstructionTime, 4596.3ms SatisfiabilityAnalysisTime, 188598.6ms InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 476 ConstructedInterpolants, 165 QuantifiedInterpolants, 5643 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1749 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 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 Received shutdown request...