./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_io_1.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_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/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_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_io_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/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_cb2b7738-bb79-46eb-949e-83103fef9d98/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 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:03:13,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:03:13,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:03:13,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:03:13,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:03:13,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:03:13,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:03:13,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:03:13,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:03:13,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:03:13,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:03:13,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:03:13,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:03:13,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:03:13,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:03:13,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:03:13,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:03:13,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:03:13,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:03:13,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:03:13,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:03:13,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:03:13,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:03:13,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:03:13,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:03:13,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:03:13,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:03:13,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:03:13,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:03:13,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:03:13,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:03:13,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:03:13,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:03:13,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:03:13,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:03:13,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:03:13,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:03:13,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:03:13,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:03:13,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:03:13,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:03:13,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:03:13,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:03:13,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:03:13,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:03:13,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:03:13,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:03:13,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:03:13,858 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:03:13,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:03:13,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:03:13,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:03:13,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:03:13,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:03:13,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:03:13,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:03:13,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:03:13,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:03:13,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:03:13,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:03:13,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:03:13,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:03:13,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:03:13,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:03:13,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:03:13,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:03:13,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:03:13,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:03:13,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:03:13,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:03:13,866 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:03:13,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:03:13,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:03:13,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:03:13,868 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_cb2b7738-bb79-46eb-949e-83103fef9d98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 [2021-10-21 20:03:14,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:03:14,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:03:14,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:03:14,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:03:14,251 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:03:14,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/psyco/psyco_io_1.c [2021-10-21 20:03:14,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/data/804b019b0/b87cad853dd84c9ea170415af2444ace/FLAG89eb8bf76 [2021-10-21 20:03:14,886 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:03:14,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/sv-benchmarks/c/psyco/psyco_io_1.c [2021-10-21 20:03:14,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/data/804b019b0/b87cad853dd84c9ea170415af2444ace/FLAG89eb8bf76 [2021-10-21 20:03:15,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/data/804b019b0/b87cad853dd84c9ea170415af2444ace [2021-10-21 20:03:15,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:03:15,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:03:15,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:03:15,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:03:15,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:03:15,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42069c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15, skipping insertion in model container [2021-10-21 20:03:15,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:03:15,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:03:15,575 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_cb2b7738-bb79-46eb-949e-83103fef9d98/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-10-21 20:03:15,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:03:15,591 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:03:15,630 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_cb2b7738-bb79-46eb-949e-83103fef9d98/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-10-21 20:03:15,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:03:15,649 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:03:15,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15 WrapperNode [2021-10-21 20:03:15,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:03:15,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:03:15,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:03:15,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:03:15,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:03:15,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:03:15,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:03:15,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:03:15,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:03:15,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:03:15,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:03:15,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:03:15,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (1/1) ... [2021-10-21 20:03:15,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:03:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:15,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:15,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:03:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:03:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:03:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:03:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:03:16,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:03:16,527 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-21 20:03:16,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:16 BoogieIcfgContainer [2021-10-21 20:03:16,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:03:16,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:03:16,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:03:16,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:03:16,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:03:15" (1/3) ... [2021-10-21 20:03:16,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde3e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:03:16, skipping insertion in model container [2021-10-21 20:03:16,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:15" (2/3) ... [2021-10-21 20:03:16,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde3e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:03:16, skipping insertion in model container [2021-10-21 20:03:16,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:16" (3/3) ... [2021-10-21 20:03:16,547 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2021-10-21 20:03:16,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:03:16,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:03:16,637 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:03:16,650 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 20:03:16,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:03:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 20:03:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:03:16,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:16,682 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:16,683 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:16,695 INFO L82 PathProgramCache]: Analyzing trace with hash 352571312, now seen corresponding path program 1 times [2021-10-21 20:03:16,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:16,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780723973] [2021-10-21 20:03:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:16,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:16,987 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 20:03:16,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:16,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780723973] [2021-10-21 20:03:16,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780723973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:16,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:16,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:03:17,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164822650] [2021-10-21 20:03:17,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:03:17,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:03:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:03:17,043 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 67 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 20:03:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:17,086 INFO L93 Difference]: Finished difference Result 130 states and 244 transitions. [2021-10-21 20:03:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:03:17,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 20:03:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:17,102 INFO L225 Difference]: With dead ends: 130 [2021-10-21 20:03:17,102 INFO L226 Difference]: Without dead ends: 57 [2021-10-21 20:03:17,107 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 20:03:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-21 20:03:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-10-21 20:03:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 56 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 20:03:17,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2021-10-21 20:03:17,161 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2021-10-21 20:03:17,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:17,162 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2021-10-21 20:03:17,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 20:03:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2021-10-21 20:03:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:03:17,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:17,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:17,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:03:17,166 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:17,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697760, now seen corresponding path program 1 times [2021-10-21 20:03:17,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:17,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082076788] [2021-10-21 20:03:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:17,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:17,271 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 20:03:17,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:17,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082076788] [2021-10-21 20:03:17,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082076788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:17,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:17,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:03:17,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535176829] [2021-10-21 20:03:17,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:03:17,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:03:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,280 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 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 20:03:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:17,355 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2021-10-21 20:03:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:03:17,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-21 20:03:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:17,358 INFO L225 Difference]: With dead ends: 115 [2021-10-21 20:03:17,358 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 20:03:17,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 20:03:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-21 20:03:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2021-10-21 20:03:17,370 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 10 [2021-10-21 20:03:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:17,370 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2021-10-21 20:03:17,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 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 20:03:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2021-10-21 20:03:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:03:17,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:17,373 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:17,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:03:17,373 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash 658032531, now seen corresponding path program 1 times [2021-10-21 20:03:17,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:17,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259158131] [2021-10-21 20:03:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:17,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:17,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:17,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259158131] [2021-10-21 20:03:17,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259158131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:17,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:17,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:03:17,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934992877] [2021-10-21 20:03:17,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:03:17,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:17,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:03:17,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,498 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:17,544 INFO L93 Difference]: Finished difference Result 123 states and 185 transitions. [2021-10-21 20:03:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:03:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 20:03:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:17,547 INFO L225 Difference]: With dead ends: 123 [2021-10-21 20:03:17,547 INFO L226 Difference]: Without dead ends: 66 [2021-10-21 20:03:17,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-21 20:03:17,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-21 20:03:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 20:03:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2021-10-21 20:03:17,560 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 15 [2021-10-21 20:03:17,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:17,560 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2021-10-21 20:03:17,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2021-10-21 20:03:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:03:17,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:17,563 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:17,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:03:17,564 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:17,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:17,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2017993163, now seen corresponding path program 1 times [2021-10-21 20:03:17,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:17,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000580762] [2021-10-21 20:03:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:17,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:17,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:17,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000580762] [2021-10-21 20:03:17,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000580762] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:17,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:17,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:03:17,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404073521] [2021-10-21 20:03:17,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:03:17,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:17,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:03:17,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,648 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:17,723 INFO L93 Difference]: Finished difference Result 182 states and 272 transitions. [2021-10-21 20:03:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:03:17,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:03:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:17,727 INFO L225 Difference]: With dead ends: 182 [2021-10-21 20:03:17,727 INFO L226 Difference]: Without dead ends: 117 [2021-10-21 20:03:17,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-21 20:03:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2021-10-21 20:03:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.4953271028037383) internal successors, (160), 107 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2021-10-21 20:03:17,747 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 20 [2021-10-21 20:03:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:17,747 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2021-10-21 20:03:17,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2021-10-21 20:03:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 20:03:17,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:17,750 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 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 20:03:17,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:03:17,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:17,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1713693363, now seen corresponding path program 1 times [2021-10-21 20:03:17,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:17,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093648826] [2021-10-21 20:03:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:17,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:03:17,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:17,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093648826] [2021-10-21 20:03:17,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093648826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:17,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:17,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:03:17,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291077769] [2021-10-21 20:03:17,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:03:17,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:03:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,851 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:17,920 INFO L93 Difference]: Finished difference Result 178 states and 264 transitions. [2021-10-21 20:03:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:03:17,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-21 20:03:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:17,923 INFO L225 Difference]: With dead ends: 178 [2021-10-21 20:03:17,924 INFO L226 Difference]: Without dead ends: 73 [2021-10-21 20:03:17,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:03:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-21 20:03:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-21 20:03:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 0 states have call successors, (0), 0 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 20:03:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-10-21 20:03:17,951 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 27 [2021-10-21 20:03:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:17,952 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-10-21 20:03:17,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2021-10-21 20:03:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:03:17,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:17,955 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:17,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:03:17,956 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:17,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1521721792, now seen corresponding path program 1 times [2021-10-21 20:03:17,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:17,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607468865] [2021-10-21 20:03:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:17,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:03:18,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:18,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607468865] [2021-10-21 20:03:18,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607468865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:18,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:18,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:03:18,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006699829] [2021-10-21 20:03:18,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:03:18,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:03:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:03:18,225 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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 20:03:18,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:18,291 INFO L93 Difference]: Finished difference Result 76 states and 104 transitions. [2021-10-21 20:03:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:03:18,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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 33 [2021-10-21 20:03:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:18,293 INFO L225 Difference]: With dead ends: 76 [2021-10-21 20:03:18,293 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:03:18,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:03:18,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:03:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:03:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:03:18,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-10-21 20:03:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:18,298 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:03:18,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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 20:03:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:03:18,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:03:18,302 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:03:18,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:03:18,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:03:18,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:18,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:18,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:18,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:18,364 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2021-10-21 20:03:18,364 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:03:18,364 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-10-21 20:03:18,365 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2021-10-21 20:03:18,365 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2021-10-21 20:03:18,365 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2021-10-21 20:03:18,366 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2021-10-21 20:03:18,366 INFO L857 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2021-10-21 20:03:18,366 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2021-10-21 20:03:18,366 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2021-10-21 20:03:18,367 INFO L853 garLoopResultBuilder]: At program point L337(lines 25 341) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~this_sink~0 0)) (= ULTIMATE.start_main_~q~0 0) (and (<= 3 ULTIMATE.start_main_~q~0) (or (<= 1 ULTIMATE.start_main_~this_sink~0) (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0)))) [2021-10-21 20:03:18,367 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2021-10-21 20:03:18,368 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2021-10-21 20:03:18,368 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2021-10-21 20:03:18,368 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2021-10-21 20:03:18,368 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2021-10-21 20:03:18,369 INFO L857 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2021-10-21 20:03:18,369 INFO L857 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2021-10-21 20:03:18,369 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2021-10-21 20:03:18,370 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2021-10-21 20:03:18,370 INFO L857 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2021-10-21 20:03:18,370 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2021-10-21 20:03:18,371 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:03:18,371 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2021-10-21 20:03:18,371 INFO L857 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2021-10-21 20:03:18,371 INFO L857 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2021-10-21 20:03:18,372 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2021-10-21 20:03:18,372 INFO L857 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2021-10-21 20:03:18,372 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_sink~0 0)) (and (<= 3 ULTIMATE.start_main_~q~0) (or (<= 1 ULTIMATE.start_main_~this_sink~0) (<= (+ ULTIMATE.start_main_~this_sink~0 1) 0)))) [2021-10-21 20:03:18,373 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2021-10-21 20:03:18,373 INFO L857 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2021-10-21 20:03:18,373 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2021-10-21 20:03:18,374 INFO L857 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2021-10-21 20:03:18,374 INFO L857 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2021-10-21 20:03:18,374 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-10-21 20:03:18,374 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2021-10-21 20:03:18,375 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2021-10-21 20:03:18,375 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2021-10-21 20:03:18,375 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2021-10-21 20:03:18,376 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2021-10-21 20:03:18,376 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2021-10-21 20:03:18,376 INFO L857 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2021-10-21 20:03:18,376 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2021-10-21 20:03:18,377 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2021-10-21 20:03:18,377 INFO L857 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2021-10-21 20:03:18,377 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2021-10-21 20:03:18,377 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:03:18,388 INFO L857 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2021-10-21 20:03:18,388 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-10-21 20:03:18,388 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2021-10-21 20:03:18,389 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2021-10-21 20:03:18,389 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2021-10-21 20:03:18,389 INFO L857 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2021-10-21 20:03:18,390 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2021-10-21 20:03:18,390 INFO L853 garLoopResultBuilder]: At program point L327(lines 15 346) the Hoare annotation is: false [2021-10-21 20:03:18,390 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2021-10-21 20:03:18,390 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2021-10-21 20:03:18,391 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2021-10-21 20:03:18,391 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2021-10-21 20:03:18,391 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2021-10-21 20:03:18,391 INFO L857 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2021-10-21 20:03:18,392 INFO L857 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2021-10-21 20:03:18,392 INFO L857 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2021-10-21 20:03:18,392 INFO L860 garLoopResultBuilder]: At program point L15(lines 15 346) the Hoare annotation is: true [2021-10-21 20:03:18,392 INFO L857 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2021-10-21 20:03:18,393 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:03:18,393 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-10-21 20:03:18,393 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2021-10-21 20:03:18,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:03:18,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:03:18 BoogieIcfgContainer [2021-10-21 20:03:18,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:03:18,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:03:18,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:03:18,419 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:03:18,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:16" (3/4) ... [2021-10-21 20:03:18,423 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:03:18,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-21 20:03:18,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:03:18,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:03:18,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:03:18,478 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:03:18,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:03:18,481 INFO L168 Benchmark]: Toolchain (without parser) took 3244.68 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 70.5 MB in the beginning and 84.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:18,482 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 86.8 MB in the end (delta: 61.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:18,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.50 ms. Allocated memory is still 113.2 MB. Free memory was 70.3 MB in the beginning and 84.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:18,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.99 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 82.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:18,484 INFO L168 Benchmark]: Boogie Preprocessor took 78.83 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 80.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:18,485 INFO L168 Benchmark]: RCFGBuilder took 700.98 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 65.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:18,486 INFO L168 Benchmark]: TraceAbstraction took 1885.38 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 65.0 MB in the beginning and 86.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:18,486 INFO L168 Benchmark]: Witness Printer took 61.00 ms. Allocated memory is still 148.9 MB. Free memory was 86.5 MB in the beginning and 84.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:18,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory was 86.9 MB in the beginning and 86.8 MB in the end (delta: 61.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.50 ms. Allocated memory is still 113.2 MB. Free memory was 70.3 MB in the beginning and 84.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.99 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 82.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.83 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 80.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 700.98 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 65.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1885.38 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 65.0 MB in the beginning and 86.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * Witness Printer took 61.00 ms. Allocated memory is still 148.9 MB. Free memory was 86.5 MB in the beginning and 84.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. 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 - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1763.3ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 21.4ms, AutomataDifference: 457.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 59.8ms, InitialAbstractionConstructionTime: 17.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 515 SDtfs, 140 SDslu, 283 SDs, 0 SdLazy, 83 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 101.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 47 HoareAnnotationTreeSize, 4 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 20.6ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 30.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 35.1ms SsaConstructionTime, 251.6ms SatisfiabilityAnalysisTime, 484.9ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (1 <= this_sink || this_sink + 1 <= 0)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((q == 2 && this_sink == 0) || q == 0) || (3 <= q && (1 <= this_sink || this_sink + 1 <= 0)) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:03:18,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb2b7738-bb79-46eb-949e-83103fef9d98/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...