./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF --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 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:13:40,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:13:40,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:13:40,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:13:40,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:13:40,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:13:40,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:13:40,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:13:40,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:13:40,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:13:40,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:13:40,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:13:40,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:13:40,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:13:40,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:13:40,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:13:40,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:13:40,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:13:40,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:13:40,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:13:40,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:13:40,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:13:40,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:13:40,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:13:40,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:13:40,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:13:40,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:13:40,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:13:40,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:13:40,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:13:40,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:13:40,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:13:40,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:13:40,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:13:40,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:13:40,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:13:40,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:13:40,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:13:40,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:13:40,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:13:40,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:13:40,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:13:40,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:13:40,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:13:40,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:13:40,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:13:40,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:13:40,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:13:40,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:13:40,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:13:40,942 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:13:40,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:13:40,944 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:13:40,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:13:40,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:13:40,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:13:40,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:13:40,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:13:40,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:13:40,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:13:40,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:13:40,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:13:40,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:13:40,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:13:40,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:13:40,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:13:40,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:13:40,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:13:40,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:13:40,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:13:40,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:13:40,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:13:40,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:13:40,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:13:40,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:13:40,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:13:40,953 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_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc [2021-11-20 07:13:41,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:13:41,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:13:41,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:13:41,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:13:41,307 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:13:41,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-11-20 07:13:41,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/data/1310f290c/12b3fc82176d4021be9767f0b87ad726/FLAGda9e5b8bf [2021-11-20 07:13:42,027 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:13:42,028 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-11-20 07:13:42,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/data/1310f290c/12b3fc82176d4021be9767f0b87ad726/FLAGda9e5b8bf [2021-11-20 07:13:42,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/data/1310f290c/12b3fc82176d4021be9767f0b87ad726 [2021-11-20 07:13:42,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:13:42,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:13:42,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:42,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:13:42,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:13:42,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0ea9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42, skipping insertion in model container [2021-11-20 07:13:42,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:13:42,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:13:42,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-11-20 07:13:42,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:42,734 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:13:42,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-11-20 07:13:42,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:42,874 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:13:42,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42 WrapperNode [2021-11-20 07:13:42,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:42,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:13:42,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:13:42,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:13:42,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,957 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 415 [2021-11-20 07:13:42,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:13:42,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:13:42,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:13:42,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:13:42,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:42,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:43,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:43,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:43,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:13:43,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:13:43,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:13:43,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:13:43,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (1/1) ... [2021-11-20 07:13:43,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:13:43,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:43,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:43,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:13:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:13:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:13:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:13:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:13:43,175 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:13:43,176 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:13:43,955 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:13:43,963 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:13:43,963 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 07:13:43,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:43 BoogieIcfgContainer [2021-11-20 07:13:43,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:13:43,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:13:43,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:13:43,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:13:43,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:13:42" (1/3) ... [2021-11-20 07:13:43,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b6a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:13:43, skipping insertion in model container [2021-11-20 07:13:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:42" (2/3) ... [2021-11-20 07:13:43,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b6a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:13:43, skipping insertion in model container [2021-11-20 07:13:43,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:43" (3/3) ... [2021-11-20 07:13:43,991 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2021-11-20 07:13:43,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:13:43,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:13:44,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:13:44,059 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:13:44,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:13:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 07:13:44,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:44,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:44,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2021-11-20 07:13:44,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:44,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833157946] [2021-11-20 07:13:44,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:44,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:44,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833157946] [2021-11-20 07:13:44,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833157946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:44,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:44,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:13:44,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735680140] [2021-11-20 07:13:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:44,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:13:44,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:13:44,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:13:44,407 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-20 07:13:44,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:44,469 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2021-11-20 07:13:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:13:44,472 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 [2021-11-20 07:13:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:44,484 INFO L225 Difference]: With dead ends: 216 [2021-11-20 07:13:44,485 INFO L226 Difference]: Without dead ends: 100 [2021-11-20 07:13:44,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:13:44,494 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:44,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:13:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-20 07:13:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-11-20 07:13:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 99 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2021-11-20 07:13:44,563 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2021-11-20 07:13:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:44,563 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2021-11-20 07:13:44,564 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) [2021-11-20 07:13:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2021-11-20 07:13:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:13:44,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:44,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:44,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:13:44,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:44,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2021-11-20 07:13:44,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:44,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492810054] [2021-11-20 07:13:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:44,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:44,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:44,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492810054] [2021-11-20 07:13:44,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492810054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:44,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:44,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:13:44,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690825397] [2021-11-20 07:13:44,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:44,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:44,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:44,672 INFO L87 Difference]: Start difference. First operand 100 states and 165 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) [2021-11-20 07:13:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:44,757 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2021-11-20 07:13:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:44,758 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 [2021-11-20 07:13:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:44,759 INFO L225 Difference]: With dead ends: 201 [2021-11-20 07:13:44,760 INFO L226 Difference]: Without dead ends: 103 [2021-11-20 07:13:44,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:44,764 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:44,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 308 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:13:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-20 07:13:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-20 07:13:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 102 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2021-11-20 07:13:44,779 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2021-11-20 07:13:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:44,780 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2021-11-20 07:13:44,781 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) [2021-11-20 07:13:44,781 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2021-11-20 07:13:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 07:13:44,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:44,784 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:44,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:13:44,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2021-11-20 07:13:44,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:44,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307370849] [2021-11-20 07:13:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:44,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:45,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:45,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307370849] [2021-11-20 07:13:45,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307370849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:45,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:45,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:13:45,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473894810] [2021-11-20 07:13:45,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:45,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:13:45,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:13:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:13:45,134 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-11-20 07:13:45,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:45,532 INFO L93 Difference]: Finished difference Result 207 states and 335 transitions. [2021-11-20 07:13:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:13:45,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2021-11-20 07:13:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:45,536 INFO L225 Difference]: With dead ends: 207 [2021-11-20 07:13:45,536 INFO L226 Difference]: Without dead ends: 188 [2021-11-20 07:13:45,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:13:45,538 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 269 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:45,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 316 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:13:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-20 07:13:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 172. [2021-11-20 07:13:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6432748538011697) internal successors, (281), 171 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2021-11-20 07:13:45,558 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2021-11-20 07:13:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:45,558 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2021-11-20 07:13:45,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-11-20 07:13:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2021-11-20 07:13:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 07:13:45,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:45,560 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:45,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:13:45,561 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:45,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2021-11-20 07:13:45,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:45,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863102352] [2021-11-20 07:13:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:45,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:45,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:45,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863102352] [2021-11-20 07:13:45,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863102352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:45,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:45,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:13:45,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462908927] [2021-11-20 07:13:45,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:45,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:45,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:45,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:45,610 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:45,644 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2021-11-20 07:13:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 07:13:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:45,648 INFO L225 Difference]: With dead ends: 293 [2021-11-20 07:13:45,649 INFO L226 Difference]: Without dead ends: 124 [2021-11-20 07:13:45,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:45,658 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 30 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:45,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 283 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:13:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-20 07:13:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-20 07:13:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.603305785123967) internal successors, (194), 121 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2021-11-20 07:13:45,677 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2021-11-20 07:13:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:45,677 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2021-11-20 07:13:45,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2021-11-20 07:13:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 07:13:45,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:45,679 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:45,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:13:45,680 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2021-11-20 07:13:45,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:45,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50580836] [2021-11-20 07:13:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:45,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:13:45,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50580836] [2021-11-20 07:13:45,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50580836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:45,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:45,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:13:45,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864347006] [2021-11-20 07:13:45,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:45,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:45,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:45,780 INFO L87 Difference]: Start difference. First operand 122 states and 194 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) [2021-11-20 07:13:45,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:45,814 INFO L93 Difference]: Finished difference Result 248 states and 395 transitions. [2021-11-20 07:13:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:45,814 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 21 [2021-11-20 07:13:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:45,816 INFO L225 Difference]: With dead ends: 248 [2021-11-20 07:13:45,817 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 07:13:45,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:45,821 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 32 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:45,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 282 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:13:45,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 07:13:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-11-20 07:13:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5793650793650793) internal successors, (199), 126 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 199 transitions. [2021-11-20 07:13:45,849 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 199 transitions. Word has length 21 [2021-11-20 07:13:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:45,850 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 199 transitions. [2021-11-20 07:13:45,854 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) [2021-11-20 07:13:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 199 transitions. [2021-11-20 07:13:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 07:13:45,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:45,857 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:45,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:13:45,857 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2021-11-20 07:13:45,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:45,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117572543] [2021-11-20 07:13:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:45,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:46,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:46,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117572543] [2021-11-20 07:13:46,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117572543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:13:46,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650114639] [2021-11-20 07:13:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:46,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:13:46,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:46,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:13:46,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:13:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:46,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:13:46,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:46,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:13:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:46,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650114639] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:13:46,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:13:46,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-11-20 07:13:46,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110711993] [2021-11-20 07:13:46,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:13:46,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:13:46,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:13:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:13:46,467 INFO L87 Difference]: Start difference. First operand 127 states and 199 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:47,224 INFO L93 Difference]: Finished difference Result 469 states and 734 transitions. [2021-11-20 07:13:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:13:47,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-20 07:13:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:47,227 INFO L225 Difference]: With dead ends: 469 [2021-11-20 07:13:47,228 INFO L226 Difference]: Without dead ends: 417 [2021-11-20 07:13:47,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:13:47,229 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1462 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:47,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 1208 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 07:13:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-20 07:13:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 348. [2021-11-20 07:13:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.5878962536023056) internal successors, (551), 347 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 551 transitions. [2021-11-20 07:13:47,245 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 551 transitions. Word has length 23 [2021-11-20 07:13:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:47,246 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 551 transitions. [2021-11-20 07:13:47,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 551 transitions. [2021-11-20 07:13:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:13:47,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:47,247 INFO L514 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] [2021-11-20 07:13:47,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:47,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 07:13:47,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:47,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2021-11-20 07:13:47,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:47,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442423407] [2021-11-20 07:13:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:47,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:13:47,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:47,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442423407] [2021-11-20 07:13:47,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442423407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:47,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:47,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:13:47,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836662339] [2021-11-20 07:13:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:47,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:47,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:47,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:47,585 INFO L87 Difference]: Start difference. First operand 348 states and 551 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) [2021-11-20 07:13:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:47,610 INFO L93 Difference]: Finished difference Result 351 states and 553 transitions. [2021-11-20 07:13:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:47,610 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 [2021-11-20 07:13:47,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:47,614 INFO L225 Difference]: With dead ends: 351 [2021-11-20 07:13:47,614 INFO L226 Difference]: Without dead ends: 344 [2021-11-20 07:13:47,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:47,616 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 147 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:47,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 164 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:13:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-20 07:13:47,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2021-11-20 07:13:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.567251461988304) internal successors, (536), 342 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 536 transitions. [2021-11-20 07:13:47,638 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 536 transitions. Word has length 27 [2021-11-20 07:13:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:47,638 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 536 transitions. [2021-11-20 07:13:47,639 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) [2021-11-20 07:13:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 536 transitions. [2021-11-20 07:13:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 07:13:47,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:47,645 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:47,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:13:47,645 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash 338445793, now seen corresponding path program 1 times [2021-11-20 07:13:47,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:47,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158248368] [2021-11-20 07:13:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:47,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 07:13:47,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:47,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158248368] [2021-11-20 07:13:47,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158248368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:47,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:47,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:13:47,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881227870] [2021-11-20 07:13:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:47,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:47,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:47,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:47,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:47,735 INFO L87 Difference]: Start difference. First operand 343 states and 536 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:47,769 INFO L93 Difference]: Finished difference Result 583 states and 907 transitions. [2021-11-20 07:13:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-20 07:13:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:47,772 INFO L225 Difference]: With dead ends: 583 [2021-11-20 07:13:47,773 INFO L226 Difference]: Without dead ends: 243 [2021-11-20 07:13:47,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:47,775 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 61 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:47,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 184 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:13:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-20 07:13:47,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-11-20 07:13:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5041666666666667) internal successors, (361), 240 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 361 transitions. [2021-11-20 07:13:47,794 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 361 transitions. Word has length 30 [2021-11-20 07:13:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:47,796 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 361 transitions. [2021-11-20 07:13:47,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 361 transitions. [2021-11-20 07:13:47,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 07:13:47,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:47,801 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-20 07:13:47,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:13:47,802 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2021-11-20 07:13:47,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:47,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831429997] [2021-11-20 07:13:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:47,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 07:13:47,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:47,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831429997] [2021-11-20 07:13:47,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831429997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:47,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:47,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:13:47,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652840838] [2021-11-20 07:13:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:47,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:47,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:47,866 INFO L87 Difference]: Start difference. First operand 241 states and 361 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2021-11-20 07:13:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:47,897 INFO L93 Difference]: Finished difference Result 424 states and 632 transitions. [2021-11-20 07:13:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:47,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 37 [2021-11-20 07:13:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:47,900 INFO L225 Difference]: With dead ends: 424 [2021-11-20 07:13:47,900 INFO L226 Difference]: Without dead ends: 225 [2021-11-20 07:13:47,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:47,903 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 28 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:47,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 212 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:13:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-20 07:13:47,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2021-11-20 07:13:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.4594594594594594) internal successors, (324), 222 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 324 transitions. [2021-11-20 07:13:47,918 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 324 transitions. Word has length 37 [2021-11-20 07:13:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:47,918 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 324 transitions. [2021-11-20 07:13:47,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2021-11-20 07:13:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 324 transitions. [2021-11-20 07:13:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 07:13:47,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:47,920 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:47,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:13:47,921 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash -140510671, now seen corresponding path program 1 times [2021-11-20 07:13:47,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:47,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387023436] [2021-11-20 07:13:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:47,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 07:13:48,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:48,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387023436] [2021-11-20 07:13:48,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387023436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:48,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:48,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:13:48,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934268932] [2021-11-20 07:13:48,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:48,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:48,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:48,030 INFO L87 Difference]: Start difference. First operand 223 states and 324 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:48,059 INFO L93 Difference]: Finished difference Result 305 states and 442 transitions. [2021-11-20 07:13:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:48,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-20 07:13:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:48,062 INFO L225 Difference]: With dead ends: 305 [2021-11-20 07:13:48,062 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 07:13:48,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:48,063 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 27 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:48,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 184 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:13:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 07:13:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-11-20 07:13:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4214285714285715) internal successors, (199), 140 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-11-20 07:13:48,073 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2021-11-20 07:13:48,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:48,075 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-11-20 07:13:48,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-11-20 07:13:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 07:13:48,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:48,077 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:48,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:13:48,078 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:13:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1014660280, now seen corresponding path program 1 times [2021-11-20 07:13:48,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:48,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938429400] [2021-11-20 07:13:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:48,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 07:13:48,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:48,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938429400] [2021-11-20 07:13:48,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938429400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:13:48,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86315595] [2021-11-20 07:13:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:48,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:13:48,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:48,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:13:48,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:13:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:48,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 07:13:48,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:48,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:13:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:49,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86315595] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:13:49,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:13:49,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-11-20 07:13:49,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084104049] [2021-11-20 07:13:49,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:13:49,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:13:49,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:13:49,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:13:49,170 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:49,392 INFO L93 Difference]: Finished difference Result 163 states and 231 transitions. [2021-11-20 07:13:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:13:49,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 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 47 [2021-11-20 07:13:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:49,393 INFO L225 Difference]: With dead ends: 163 [2021-11-20 07:13:49,393 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 07:13:49,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:13:49,395 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 511 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:49,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 554 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:13:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 07:13:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 07:13:49,396 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) [2021-11-20 07:13:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:13:49,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-11-20 07:13:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:49,397 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:13:49,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:13:49,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 07:13:49,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:13:49,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 07:13:49,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 07:13:49,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 07:13:50,051 INFO L858 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2021-11-20 07:13:50,052 INFO L858 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2021-11-20 07:13:50,052 INFO L858 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2021-11-20 07:13:50,052 INFO L858 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2021-11-20 07:13:50,052 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-11-20 07:13:50,052 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2021-11-20 07:13:50,052 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2021-11-20 07:13:50,052 INFO L858 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2021-11-20 07:13:50,053 INFO L858 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2021-11-20 07:13:50,054 INFO L858 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2021-11-20 07:13:50,055 INFO L858 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2021-11-20 07:13:50,056 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-11-20 07:13:50,056 INFO L858 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2021-11-20 07:13:50,056 INFO L858 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2021-11-20 07:13:50,056 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-20 07:13:50,056 INFO L858 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2021-11-20 07:13:50,056 INFO L858 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2021-11-20 07:13:50,056 INFO L861 garLoopResultBuilder]: At program point L16(lines 16 568) the Hoare annotation is: true [2021-11-20 07:13:50,056 INFO L858 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2021-11-20 07:13:50,057 INFO L858 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2021-11-20 07:13:50,058 INFO L858 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2021-11-20 07:13:50,058 INFO L858 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2021-11-20 07:13:50,058 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 07:13:50,058 INFO L858 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2021-11-20 07:13:50,058 INFO L854 garLoopResultBuilder]: At program point L549(lines 16 568) the Hoare annotation is: false [2021-11-20 07:13:50,061 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2021-11-20 07:13:50,061 INFO L858 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2021-11-20 07:13:50,061 INFO L858 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2021-11-20 07:13:50,061 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 07:13:50,062 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0))) (or (and .cse0 (<= (div |ULTIMATE.start_main_~P8~0#1| 4294967296) 0) (<= 5 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 2) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 2)) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648))) (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0)))) [2021-11-20 07:13:50,062 INFO L858 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2021-11-20 07:13:50,062 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2021-11-20 07:13:50,062 INFO L858 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2021-11-20 07:13:50,062 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2021-11-20 07:13:50,063 INFO L858 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2021-11-20 07:13:50,063 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 07:13:50,063 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2021-11-20 07:13:50,063 INFO L858 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2021-11-20 07:13:50,063 INFO L858 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2021-11-20 07:13:50,063 INFO L858 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2021-11-20 07:13:50,063 INFO L858 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2021-11-20 07:13:50,064 INFO L858 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2021-11-20 07:13:50,064 INFO L858 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2021-11-20 07:13:50,064 INFO L858 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2021-11-20 07:13:50,064 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2021-11-20 07:13:50,064 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2021-11-20 07:13:50,064 INFO L858 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2021-11-20 07:13:50,065 INFO L854 garLoopResultBuilder]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 1))) (.cse0 (<= (div |ULTIMATE.start_main_~P8~0#1| 4294967296) 0)) (.cse4 (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 2) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 2))) (.cse2 (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648))) (.cse5 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 4) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 1) .cse4 .cse2 .cse3) (and .cse5 .cse0 (= 3 |ULTIMATE.start_main_~q~0#1|) .cse1 .cse2) (and .cse5 .cse0 (<= 5 |ULTIMATE.start_main_~q~0#1|) .cse4 .cse2) (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse5 (= |ULTIMATE.start_main_~q~0#1| 0)))) [2021-11-20 07:13:50,065 INFO L858 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2021-11-20 07:13:50,065 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2021-11-20 07:13:50,065 INFO L858 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2021-11-20 07:13:50,065 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2021-11-20 07:13:50,065 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2021-11-20 07:13:50,066 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2021-11-20 07:13:50,066 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2021-11-20 07:13:50,066 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2021-11-20 07:13:50,066 INFO L858 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2021-11-20 07:13:50,067 INFO L858 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2021-11-20 07:13:50,067 INFO L858 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2021-11-20 07:13:50,067 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2021-11-20 07:13:50,067 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2021-11-20 07:13:50,080 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 07:13:50,080 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2021-11-20 07:13:50,082 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2021-11-20 07:13:50,082 INFO L858 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2021-11-20 07:13:50,082 INFO L858 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2021-11-20 07:13:50,082 INFO L858 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2021-11-20 07:13:50,083 INFO L858 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2021-11-20 07:13:50,083 INFO L858 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2021-11-20 07:13:50,083 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2021-11-20 07:13:50,084 INFO L858 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-11-20 07:13:50,084 INFO L858 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2021-11-20 07:13:50,084 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2021-11-20 07:13:50,084 INFO L858 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2021-11-20 07:13:50,084 INFO L858 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2021-11-20 07:13:50,085 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2021-11-20 07:13:50,088 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:50,089 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:13:50,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:13:50 BoogieIcfgContainer [2021-11-20 07:13:50,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:13:50,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:13:50,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:13:50,124 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:13:50,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:43" (3/4) ... [2021-11-20 07:13:50,128 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 07:13:50,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-20 07:13:50,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 07:13:50,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 07:13:50,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 07:13:50,191 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:13:50,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:13:50,192 INFO L158 Benchmark]: Toolchain (without parser) took 7884.66ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 74.6MB in the beginning and 101.1MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:13:50,193 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:13:50,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.99ms. Allocated memory is still 109.1MB. Free memory was 74.3MB in the beginning and 76.4MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:13:50,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.01ms. Allocated memory is still 109.1MB. Free memory was 76.4MB in the beginning and 71.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 07:13:50,194 INFO L158 Benchmark]: Boogie Preprocessor took 50.85ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 68.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:13:50,194 INFO L158 Benchmark]: RCFGBuilder took 956.13ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 37.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-20 07:13:50,194 INFO L158 Benchmark]: TraceAbstraction took 6139.33ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 83.8MB in the beginning and 104.3MB in the end (delta: -20.4MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. [2021-11-20 07:13:50,195 INFO L158 Benchmark]: Witness Printer took 68.24ms. Allocated memory is still 132.1MB. Free memory was 104.3MB in the beginning and 101.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:13:50,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 557.99ms. Allocated memory is still 109.1MB. Free memory was 74.3MB in the beginning and 76.4MB in the end (delta: -2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.01ms. Allocated memory is still 109.1MB. Free memory was 76.4MB in the beginning and 71.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.85ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 68.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 956.13ms. Allocated memory is still 109.1MB. Free memory was 68.6MB in the beginning and 37.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6139.33ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 83.8MB in the beginning and 104.3MB in the end (delta: -20.4MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. * Witness Printer took 68.24ms. Allocated memory is still 132.1MB. Free memory was 104.3MB in the beginning and 101.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 567]: 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, 109 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2571 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2571 mSDsluCounter, 3894 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2106 mSDsCounter, 214 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 540 IncrementalHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 214 mSolverCounterUnsat, 1788 mSDtfsCounter, 540 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=348occurred in iteration=6, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 96 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 164 HoareAnnotationTreeSize, 4 FomulaSimplifications, 236 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 426 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 2284 SizeOfPredicates, 7 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 132/211 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: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((P8 / 4294967296 <= 0 && q == 4) && this_expect <= 2 * ((-1 + this_expect) / 2) + 1) && 0 <= P8 + 2147483648) && this_buffer_empty == 1) || ((((P8 / 4294967296 <= 0 && q == 1) && this_expect <= 2 * ((-2 + this_expect) / 2) + 2) && 0 <= P8 + 2147483648) && this_buffer_empty == 1)) || ((((this_buffer_empty == 0 && P8 / 4294967296 <= 0) && 3 == q) && this_expect <= 2 * ((-1 + this_expect) / 2) + 1) && 0 <= P8 + 2147483648)) || ((((this_buffer_empty == 0 && P8 / 4294967296 <= 0) && 5 <= q) && this_expect <= 2 * ((-2 + this_expect) / 2) + 2) && 0 <= P8 + 2147483648)) || ((this_expect == 0 && this_buffer_empty == 0) && q == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((this_buffer_empty == 0 && P8 / 4294967296 <= 0) && 5 <= q) && this_expect <= 2 * ((-2 + this_expect) / 2) + 2) && 0 <= P8 + 2147483648) || ((this_expect == 0 && this_buffer_empty == 0) && q == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-20 07:13:50,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac613635-ab29-4bc5-b7cc-684977d931fd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE