./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:50:55,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:50:55,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:50:55,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:50:55,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:50:55,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:50:55,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:50:55,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:50:55,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:50:55,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:50:55,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:50:55,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:50:55,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:50:55,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:50:55,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:50:55,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:50:55,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:50:55,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:50:55,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:50:55,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:50:55,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:50:55,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:50:55,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:50:55,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:50:55,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:50:55,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:50:55,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:50:55,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:50:55,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:50:55,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:50:55,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:50:55,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:50:55,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:50:55,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:50:55,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:50:55,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:50:55,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:50:55,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:50:55,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:50:55,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:50:55,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:50:55,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:50:55,933 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:50:55,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:50:55,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:50:55,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:50:55,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:50:55,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:50:55,939 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:50:55,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:50:55,940 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:50:55,940 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:50:55,942 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:50:55,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:50:55,942 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:50:55,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:50:55,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:50:55,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:50:55,944 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:50:55,944 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:50:55,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:50:55,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:50:55,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:50:55,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:50:55,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:50:55,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:50:55,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:50:55,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:50:55,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:50:55,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:50:55,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:50:55,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:50:55,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:50:55,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:50:55,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:50:55,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:50:55,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:50:55,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:50:55,953 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:50:55,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:50:55,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:50:55,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:50:55,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:50:55,955 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e [2021-11-23 16:50:56,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:50:56,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:50:56,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:50:56,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:50:56,362 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:50:56,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2021-11-23 16:50:56,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/a1b8eb974/a6958f369aab4fe9b358fe914c7e36b2/FLAGc7da76641 [2021-11-23 16:50:57,506 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:50:57,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2021-11-23 16:50:57,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/a1b8eb974/a6958f369aab4fe9b358fe914c7e36b2/FLAGc7da76641 [2021-11-23 16:50:57,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/a1b8eb974/a6958f369aab4fe9b358fe914c7e36b2 [2021-11-23 16:50:57,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:50:57,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:50:57,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:50:57,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:50:57,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:50:57,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:57" (1/1) ... [2021-11-23 16:50:57,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c806c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:50:57, skipping insertion in model container [2021-11-23 16:50:57,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:50:57" (1/1) ... [2021-11-23 16:50:57,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:50:58,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:50:58,632 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_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/sv-benchmarks/c/eca-rers2012/Problem13_label01.c[7003,7016] [2021-11-23 16:50:59,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:50:59,963 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:51:00,021 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_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/sv-benchmarks/c/eca-rers2012/Problem13_label01.c[7003,7016] [2021-11-23 16:51:00,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:00,923 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:51:00,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00 WrapperNode [2021-11-23 16:51:00,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:00,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:00,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:51:00,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:51:00,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:01,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:01,910 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-11-23 16:51:01,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:01,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:51:01,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:51:01,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:51:01,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:01,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:02,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:02,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:02,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:02,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:02,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:02,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:51:02,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:51:02,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:51:02,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:51:02,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:00" (1/1) ... [2021-11-23 16:51:02,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:02,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:51:03,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:51:03,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:51:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:51:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:51:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:51:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:51:03,303 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:51:03,319 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:51:10,859 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:51:10,951 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:51:10,959 INFO L158 Benchmark]: Toolchain (without parser) took 13035.03ms. Allocated memory was 111.1MB in the beginning and 578.8MB in the end (delta: 467.7MB). Free memory was 80.6MB in the beginning and 187.3MB in the end (delta: -106.7MB). Peak memory consumption was 360.3MB. Max. memory is 16.1GB. [2021-11-23 16:51:10,960 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:51:10,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2998.33ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 80.2MB in the beginning and 75.9MB in the end (delta: 4.3MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2021-11-23 16:51:10,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 985.80ms. Allocated memory was 161.5MB in the beginning and 289.4MB in the end (delta: 127.9MB). Free memory was 75.9MB in the beginning and 149.2MB in the end (delta: -73.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2021-11-23 16:51:10,966 INFO L158 Benchmark]: Boogie Preprocessor took 1021.16ms. Allocated memory was 289.4MB in the beginning and 578.8MB in the end (delta: 289.4MB). Free memory was 149.2MB in the beginning and 422.9MB in the end (delta: -273.7MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2021-11-23 16:51:10,967 INFO L158 Benchmark]: RCFGBuilder took 8019.28ms. Allocated memory is still 578.8MB. Free memory was 422.9MB in the beginning and 187.3MB in the end (delta: 235.6MB). Peak memory consumption was 234.9MB. Max. memory is 16.1GB. [2021-11-23 16:51:10,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2998.33ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 80.2MB in the beginning and 75.9MB in the end (delta: 4.3MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 985.80ms. Allocated memory was 161.5MB in the beginning and 289.4MB in the end (delta: 127.9MB). Free memory was 75.9MB in the beginning and 149.2MB in the end (delta: -73.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 1021.16ms. Allocated memory was 289.4MB in the beginning and 578.8MB in the end (delta: 289.4MB). Free memory was 149.2MB in the beginning and 422.9MB in the end (delta: -273.7MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * RCFGBuilder took 8019.28ms. Allocated memory is still 578.8MB. Free memory was 422.9MB in the beginning and 187.3MB in the end (delta: 235.6MB). Peak memory consumption was 234.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:51:11,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:51:14,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:51:14,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:51:14,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:51:14,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:51:14,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:51:14,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:51:14,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:51:14,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:51:14,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:51:14,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:51:14,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:51:14,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:51:14,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:51:14,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:51:14,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:51:14,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:51:14,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:51:14,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:51:14,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:51:14,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:51:14,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:51:14,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:51:14,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:51:14,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:51:14,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:51:14,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:51:14,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:51:14,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:51:14,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:51:14,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:51:14,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:51:14,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:51:14,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:51:14,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:51:14,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:51:14,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:51:14,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:51:14,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:51:14,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:51:14,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:51:14,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:51:14,362 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:51:14,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:51:14,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:51:14,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:51:14,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:51:14,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:51:14,367 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:51:14,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:51:14,367 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:51:14,367 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:51:14,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:51:14,369 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:51:14,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:51:14,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:51:14,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:51:14,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:51:14,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:51:14,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:51:14,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:51:14,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:51:14,373 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:51:14,373 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:51:14,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:51:14,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:51:14,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:51:14,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:51:14,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:51:14,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:51:14,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:51:14,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:14,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:51:14,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:51:14,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:51:14,377 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:51:14,377 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:51:14,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:51:14,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:51:14,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:51:14,379 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e [2021-11-23 16:51:14,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:51:14,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:51:14,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:51:14,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:51:14,964 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:51:14,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2021-11-23 16:51:15,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/19d3eb877/365a03f9d16e4c3a8bc948cd5f2a70d9/FLAG6ce23cc80 [2021-11-23 16:51:16,279 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:51:16,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2021-11-23 16:51:16,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/19d3eb877/365a03f9d16e4c3a8bc948cd5f2a70d9/FLAG6ce23cc80 [2021-11-23 16:51:16,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/data/19d3eb877/365a03f9d16e4c3a8bc948cd5f2a70d9 [2021-11-23 16:51:16,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:51:16,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:51:16,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:16,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:51:16,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:51:16,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:51:16" (1/1) ... [2021-11-23 16:51:16,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66da4130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:16, skipping insertion in model container [2021-11-23 16:51:16,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:51:16" (1/1) ... [2021-11-23 16:51:16,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:51:16,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:51:17,303 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_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/sv-benchmarks/c/eca-rers2012/Problem13_label01.c[7003,7016] [2021-11-23 16:51:18,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:19,042 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:51:19,102 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_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/sv-benchmarks/c/eca-rers2012/Problem13_label01.c[7003,7016] [2021-11-23 16:51:20,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:51:20,122 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:51:20,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20 WrapperNode [2021-11-23 16:51:20,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:51:20,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:20,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:51:20,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:51:20,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,505 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5578 [2021-11-23 16:51:20,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:51:20,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:51:20,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:51:20,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:51:20,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:51:20,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:51:20,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:51:20,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:51:20,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (1/1) ... [2021-11-23 16:51:20,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:51:20,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:51:20,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:51:21,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:51:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:51:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:51:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:51:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:51:21,241 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:51:21,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:52:18,746 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:52:18,777 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:52:18,778 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:52:18,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:52:18 BoogieIcfgContainer [2021-11-23 16:52:18,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:52:18,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:52:18,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:52:18,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:52:18,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:51:16" (1/3) ... [2021-11-23 16:52:18,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de59c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:52:18, skipping insertion in model container [2021-11-23 16:52:18,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:51:20" (2/3) ... [2021-11-23 16:52:18,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de59c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:52:18, skipping insertion in model container [2021-11-23 16:52:18,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:52:18" (3/3) ... [2021-11-23 16:52:18,794 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label01.c [2021-11-23 16:52:18,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:52:18,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:52:18,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:52:18,883 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=FINITE_AUTOMATA, 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 [2021-11-23 16:52:18,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:52:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2021-11-23 16:52:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 16:52:18,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:18,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:18,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:52:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2021-11-23 16:52:18,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:18,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6394869] [2021-11-23 16:52:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:18,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:18,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:18,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:19,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:52:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:19,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:52:19,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:19,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:19,567 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:19,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6394869] [2021-11-23 16:52:19,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6394869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:19,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:19,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:52:19,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184431279] [2021-11-23 16:52:19,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:19,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:52:19,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:19,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:52:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:52:19,633 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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) [2021-11-23 16:53:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:53:28,300 INFO L93 Difference]: Finished difference Result 3024 states and 5630 transitions. [2021-11-23 16:53:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:53:28,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 49 [2021-11-23 16:53:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:53:28,346 INFO L225 Difference]: With dead ends: 3024 [2021-11-23 16:53:28,347 INFO L226 Difference]: Without dead ends: 1841 [2021-11-23 16:53:28,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:53:28,359 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 824 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.4s IncrementalHoareTripleChecker+Time [2021-11-23 16:53:28,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 1161 Invalid, 3328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 68.4s Time] [2021-11-23 16:53:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-11-23 16:53:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1836. [2021-11-23 16:53:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.5471389645776568) internal successors, (2839), 1835 states have internal predecessors, (2839), 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) [2021-11-23 16:53:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2839 transitions. [2021-11-23 16:53:28,513 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2839 transitions. Word has length 49 [2021-11-23 16:53:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:53:28,514 INFO L470 AbstractCegarLoop]: Abstraction has 1836 states and 2839 transitions. [2021-11-23 16:53:28,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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) [2021-11-23 16:53:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2839 transitions. [2021-11-23 16:53:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 16:53:28,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:53:28,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:53:28,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:53:28,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:53:28,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:53:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:53:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash -285580078, now seen corresponding path program 1 times [2021-11-23 16:53:28,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:53:28,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006621771] [2021-11-23 16:53:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:53:28,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:53:28,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:53:28,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:53:28,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:53:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:53:28,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:53:28,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:53:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:53:29,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:53:29,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:53:29,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006621771] [2021-11-23 16:53:29,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006621771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:53:29,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:53:29,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:53:29,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863841008] [2021-11-23 16:53:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:53:29,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:53:29,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:53:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:53:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:53:29,464 INFO L87 Difference]: Start difference. First operand 1836 states and 2839 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2021-11-23 16:54:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:54:25,508 INFO L93 Difference]: Finished difference Result 5285 states and 8168 transitions. [2021-11-23 16:54:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:54:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 114 [2021-11-23 16:54:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:54:25,535 INFO L225 Difference]: With dead ends: 5285 [2021-11-23 16:54:25,535 INFO L226 Difference]: Without dead ends: 3451 [2021-11-23 16:54:25,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:54:25,541 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 923 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:54:25,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1009 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 55.9s Time] [2021-11-23 16:54:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2021-11-23 16:54:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 3449. [2021-11-23 16:54:25,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 3448 states have (on average 1.3761600928074247) internal successors, (4745), 3448 states have internal predecessors, (4745), 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) [2021-11-23 16:54:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4745 transitions. [2021-11-23 16:54:25,647 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4745 transitions. Word has length 114 [2021-11-23 16:54:25,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:54:25,648 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 4745 transitions. [2021-11-23 16:54:25,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2021-11-23 16:54:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4745 transitions. [2021-11-23 16:54:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 16:54:25,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:54:25,652 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:54:25,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 16:54:25,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:54:25,865 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:54:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:54:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1544573222, now seen corresponding path program 1 times [2021-11-23 16:54:25,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:54:25,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218141191] [2021-11-23 16:54:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:54:25,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:54:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:54:25,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:54:25,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 16:54:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:54:26,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:54:26,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:26,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:54:26,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:54:26,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218141191] [2021-11-23 16:54:26,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218141191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:54:26,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:54:26,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:54:26,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391408086] [2021-11-23 16:54:26,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:54:26,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:54:26,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:54:26,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:54:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:54:26,418 INFO L87 Difference]: Start difference. First operand 3449 states and 4745 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-23 16:55:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:37,571 INFO L93 Difference]: Finished difference Result 10087 states and 13871 transitions. [2021-11-23 16:55:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:55:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2021-11-23 16:55:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:37,618 INFO L225 Difference]: With dead ends: 10087 [2021-11-23 16:55:37,619 INFO L226 Difference]: Without dead ends: 6640 [2021-11-23 16:55:37,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:37,625 INFO L933 BasicCegarLoop]: 1864 mSDtfsCounter, 823 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:37,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 2014 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 70.9s Time] [2021-11-23 16:55:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2021-11-23 16:55:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 6623. [2021-11-23 16:55:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6622 states have (on average 1.242826940501359) internal successors, (8230), 6622 states have internal predecessors, (8230), 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) [2021-11-23 16:55:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 8230 transitions. [2021-11-23 16:55:37,790 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 8230 transitions. Word has length 122 [2021-11-23 16:55:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:37,793 INFO L470 AbstractCegarLoop]: Abstraction has 6623 states and 8230 transitions. [2021-11-23 16:55:37,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-23 16:55:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 8230 transitions. [2021-11-23 16:55:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 16:55:37,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:37,808 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:37,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:38,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:38,023 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:55:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1020189107, now seen corresponding path program 1 times [2021-11-23 16:55:38,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:38,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363375355] [2021-11-23 16:55:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:38,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:38,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:38,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:38,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 16:55:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:38,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:55:38,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:38,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:38,607 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:38,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363375355] [2021-11-23 16:55:38,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363375355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:38,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:38,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:55:38,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555822933] [2021-11-23 16:55:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:38,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:55:38,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:38,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:55:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:38,611 INFO L87 Difference]: Start difference. First operand 6623 states and 8230 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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) [2021-11-23 16:56:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:56:46,673 INFO L93 Difference]: Finished difference Result 16423 states and 20828 transitions. [2021-11-23 16:56:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:56:46,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 131 [2021-11-23 16:56:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:56:46,725 INFO L225 Difference]: With dead ends: 16423 [2021-11-23 16:56:46,725 INFO L226 Difference]: Without dead ends: 9802 [2021-11-23 16:56:46,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:56:46,736 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 776 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:56:46,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1202 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 67.8s Time] [2021-11-23 16:56:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9802 states. [2021-11-23 16:56:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9802 to 9787. [2021-11-23 16:56:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9787 states, 9786 states have (on average 1.19241773962804) internal successors, (11669), 9786 states have internal predecessors, (11669), 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) [2021-11-23 16:56:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9787 states to 9787 states and 11669 transitions. [2021-11-23 16:56:46,976 INFO L78 Accepts]: Start accepts. Automaton has 9787 states and 11669 transitions. Word has length 131 [2021-11-23 16:56:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:56:46,978 INFO L470 AbstractCegarLoop]: Abstraction has 9787 states and 11669 transitions. [2021-11-23 16:56:46,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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) [2021-11-23 16:56:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9787 states and 11669 transitions. [2021-11-23 16:56:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-23 16:56:46,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:56:46,982 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:56:47,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 16:56:47,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:56:47,198 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:56:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:56:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1459044689, now seen corresponding path program 1 times [2021-11-23 16:56:47,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:56:47,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981275017] [2021-11-23 16:56:47,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:47,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:56:47,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:56:47,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:56:47,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 16:56:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:47,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 16:56:47,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:48,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:49,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:56:49,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981275017] [2021-11-23 16:56:49,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981275017] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [334678150] [2021-11-23 16:56:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:49,003 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:56:49,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:56:49,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:56:49,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-23 16:56:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:49,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 16:56:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:50,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:50,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [334678150] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165600789] [2021-11-23 16:56:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:50,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:56:50,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:56:50,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:56:50,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd21ba94-c52a-4fee-aef4-bb4f942af0ad/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 16:56:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:50,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:56:50,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:51,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:53,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165600789] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:53,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:56:53,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 7 [2021-11-23 16:56:53,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387772823] [2021-11-23 16:56:53,325 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:56:53,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:56:53,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:56:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:56:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:56:53,330 INFO L87 Difference]: Start difference. First operand 9787 states and 11669 transitions. Second operand has 8 states, 8 states have (on average 65.0) internal successors, (520), 7 states have internal predecessors, (520), 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) [2021-11-23 16:59:00,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 17:00:56,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []