./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7 --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 1418b02b8b2f5990b796a4d39288b2acbdc5bc3cef26e1456ee8caff9c24da11 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:38:00,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:38:00,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:38:00,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:38:00,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:38:00,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:38:00,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:38:00,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:38:00,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:38:00,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:38:00,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:38:00,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:38:00,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:38:00,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:38:00,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:38:00,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:38:00,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:38:00,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:38:00,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:38:00,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:38:00,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:38:00,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:38:00,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:38:00,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:38:00,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:38:00,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:38:00,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:38:00,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:38:00,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:38:00,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:38:00,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:38:00,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:38:00,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:38:00,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:38:00,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:38:00,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:38:00,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:38:00,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:38:00,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:38:00,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:38:00,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:38:00,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:38:00,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:38:00,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:38:00,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:38:00,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:38:00,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:38:00,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:38:00,639 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:38:00,639 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:38:00,639 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:38:00,640 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:38:00,640 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:38:00,640 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:38:00,640 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:38:00,640 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:38:00,641 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:38:00,641 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:38:00,641 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:38:00,641 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:38:00,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:38:00,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:38:00,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:38:00,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:38:00,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:38:00,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:38:00,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:38:00,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:38:00,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:38:00,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:38:00,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:38:00,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:38:00,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:38:00,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:38:00,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:38:00,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:38:00,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:38:00,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:38:00,647 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:38:00,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:38:00,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:38:00,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:38:00,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:38:00,648 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_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1418b02b8b2f5990b796a4d39288b2acbdc5bc3cef26e1456ee8caff9c24da11 [2021-11-25 19:38:00,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:38:00,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:38:00,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:38:00,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:38:00,901 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:38:00,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/eca-rers2012/Problem02_label03.c [2021-11-25 19:38:00,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/data/f499e626c/495bdc4c67da49b6a900857b6f7033ba/FLAG43cb3a134 [2021-11-25 19:38:01,590 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:38:01,590 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/sv-benchmarks/c/eca-rers2012/Problem02_label03.c [2021-11-25 19:38:01,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/data/f499e626c/495bdc4c67da49b6a900857b6f7033ba/FLAG43cb3a134 [2021-11-25 19:38:01,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/data/f499e626c/495bdc4c67da49b6a900857b6f7033ba [2021-11-25 19:38:01,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:38:01,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:38:01,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:38:01,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:38:01,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:38:01,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:38:01" (1/1) ... [2021-11-25 19:38:01,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6964ae79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:01, skipping insertion in model container [2021-11-25 19:38:01,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:38:01" (1/1) ... [2021-11-25 19:38:01,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:38:01,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:38:02,293 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_417cbadf-749c-4c16-8369-55ef9030c837/sv-benchmarks/c/eca-rers2012/Problem02_label03.c[20079,20092] [2021-11-25 19:38:02,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:38:02,319 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:38:02,391 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_417cbadf-749c-4c16-8369-55ef9030c837/sv-benchmarks/c/eca-rers2012/Problem02_label03.c[20079,20092] [2021-11-25 19:38:02,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:38:02,420 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:38:02,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02 WrapperNode [2021-11-25 19:38:02,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:38:02,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:38:02,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:38:02,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:38:02,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,521 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2021-11-25 19:38:02,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:38:02,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:38:02,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:38:02,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:38:02,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:38:02,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:38:02,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:38:02,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:38:02,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (1/1) ... [2021-11-25 19:38:02,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:38:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:38:02,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:38:02,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:38:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:38:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:38:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:38:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:38:02,763 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:38:02,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:38:03,723 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:38:03,879 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:38:03,879 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:38:03,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:03 BoogieIcfgContainer [2021-11-25 19:38:03,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:38:03,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:38:03,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:38:03,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:38:03,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:38:01" (1/3) ... [2021-11-25 19:38:03,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe9ddbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:38:03, skipping insertion in model container [2021-11-25 19:38:03,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:38:02" (2/3) ... [2021-11-25 19:38:03,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe9ddbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:38:03, skipping insertion in model container [2021-11-25 19:38:03,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:03" (3/3) ... [2021-11-25 19:38:03,892 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label03.c [2021-11-25 19:38:03,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:38:03,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:38:03,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:38:03,961 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 [2021-11-25 19:38:03,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:38:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2021-11-25 19:38:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 19:38:03,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:03,988 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, 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] [2021-11-25 19:38:03,989 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1814583831, now seen corresponding path program 1 times [2021-11-25 19:38:04,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:04,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361830381] [2021-11-25 19:38:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:04,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:38:04,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:04,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361830381] [2021-11-25 19:38:04,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361830381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:04,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:04,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:38:04,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757728030] [2021-11-25 19:38:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:04,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:04,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:04,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:04,395 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-25 19:38:04,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:04,942 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-25 19:38:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:04,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-25 19:38:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:04,960 INFO L225 Difference]: With dead ends: 251 [2021-11-25 19:38:04,960 INFO L226 Difference]: Without dead ends: 163 [2021-11-25 19:38:04,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:04,969 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:04,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:38:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-25 19:38:05,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-25 19:38:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 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) [2021-11-25 19:38:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-11-25 19:38:05,055 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-11-25 19:38:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:05,055 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-11-25 19:38:05,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-25 19:38:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-11-25 19:38:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 19:38:05,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:05,060 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-25 19:38:05,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:38:05,061 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash -483697094, now seen corresponding path program 1 times [2021-11-25 19:38:05,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:05,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435193355] [2021-11-25 19:38:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:05,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:38:05,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:05,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435193355] [2021-11-25 19:38:05,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435193355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:05,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:05,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:05,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643694317] [2021-11-25 19:38:05,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:05,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:05,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:05,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:05,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:05,310 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-25 19:38:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:05,699 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2021-11-25 19:38:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-11-25 19:38:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:05,703 INFO L225 Difference]: With dead ends: 405 [2021-11-25 19:38:05,703 INFO L226 Difference]: Without dead ends: 243 [2021-11-25 19:38:05,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:05,706 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:05,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:38:05,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-25 19:38:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-25 19:38:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 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) [2021-11-25 19:38:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2021-11-25 19:38:05,723 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2021-11-25 19:38:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:05,724 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-11-25 19:38:05,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-25 19:38:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2021-11-25 19:38:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 19:38:05,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:05,729 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:38:05,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:38:05,730 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:05,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:05,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2106958705, now seen corresponding path program 1 times [2021-11-25 19:38:05,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:05,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839623472] [2021-11-25 19:38:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:05,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:38:05,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:05,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839623472] [2021-11-25 19:38:05,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839623472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:05,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:05,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:38:05,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67472266] [2021-11-25 19:38:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:05,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:05,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:05,788 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-11-25 19:38:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:06,123 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2021-11-25 19:38:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:06,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2021-11-25 19:38:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:06,126 INFO L225 Difference]: With dead ends: 725 [2021-11-25 19:38:06,127 INFO L226 Difference]: Without dead ends: 483 [2021-11-25 19:38:06,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:06,130 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 106 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:06,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:38:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-25 19:38:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-11-25 19:38:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3983402489626555) internal successors, (674), 482 states have internal predecessors, (674), 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) [2021-11-25 19:38:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2021-11-25 19:38:06,184 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2021-11-25 19:38:06,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:06,186 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2021-11-25 19:38:06,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2021-11-25 19:38:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2021-11-25 19:38:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 19:38:06,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:06,193 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, 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] [2021-11-25 19:38:06,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:38:06,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1283769492, now seen corresponding path program 1 times [2021-11-25 19:38:06,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:06,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213090094] [2021-11-25 19:38:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:06,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:38:06,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:06,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213090094] [2021-11-25 19:38:06,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213090094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:06,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:06,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:06,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699492576] [2021-11-25 19:38:06,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:06,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:06,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:06,322 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-25 19:38:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:06,697 INFO L93 Difference]: Finished difference Result 1445 states and 2019 transitions. [2021-11-25 19:38:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-11-25 19:38:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:06,704 INFO L225 Difference]: With dead ends: 1445 [2021-11-25 19:38:06,704 INFO L226 Difference]: Without dead ends: 963 [2021-11-25 19:38:06,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:06,708 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:06,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:38:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-11-25 19:38:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 803. [2021-11-25 19:38:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.3765586034912718) internal successors, (1104), 802 states have internal predecessors, (1104), 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) [2021-11-25 19:38:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1104 transitions. [2021-11-25 19:38:06,740 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1104 transitions. Word has length 110 [2021-11-25 19:38:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:06,741 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1104 transitions. [2021-11-25 19:38:06,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-25 19:38:06,742 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1104 transitions. [2021-11-25 19:38:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 19:38:06,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:06,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-25 19:38:06,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:38:06,745 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1413219721, now seen corresponding path program 1 times [2021-11-25 19:38:06,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:06,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039389562] [2021-11-25 19:38:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:06,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:38:06,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:06,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039389562] [2021-11-25 19:38:06,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039389562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:06,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:06,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:06,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724328259] [2021-11-25 19:38:06,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:06,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:38:06,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:06,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:38:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:38:06,989 INFO L87 Difference]: Start difference. First operand 803 states and 1104 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-25 19:38:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:07,538 INFO L93 Difference]: Finished difference Result 1923 states and 2676 transitions. [2021-11-25 19:38:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:38:07,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 [2021-11-25 19:38:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:07,546 INFO L225 Difference]: With dead ends: 1923 [2021-11-25 19:38:07,546 INFO L226 Difference]: Without dead ends: 1043 [2021-11-25 19:38:07,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:38:07,549 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 77 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:07,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 48 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:38:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-25 19:38:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 803. [2021-11-25 19:38:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.3690773067331672) internal successors, (1098), 802 states have internal predecessors, (1098), 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) [2021-11-25 19:38:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1098 transitions. [2021-11-25 19:38:07,575 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1098 transitions. Word has length 114 [2021-11-25 19:38:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:07,575 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1098 transitions. [2021-11-25 19:38:07,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-25 19:38:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1098 transitions. [2021-11-25 19:38:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-25 19:38:07,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:07,579 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-25 19:38:07,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:38:07,579 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash 228037299, now seen corresponding path program 1 times [2021-11-25 19:38:07,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:07,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145323481] [2021-11-25 19:38:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:07,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 19:38:07,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:07,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145323481] [2021-11-25 19:38:07,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145323481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:07,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:07,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:07,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11266363] [2021-11-25 19:38:07,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:07,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:07,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:07,648 INFO L87 Difference]: Start difference. First operand 803 states and 1098 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-11-25 19:38:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:08,008 INFO L93 Difference]: Finished difference Result 1765 states and 2395 transitions. [2021-11-25 19:38:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 150 [2021-11-25 19:38:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:08,014 INFO L225 Difference]: With dead ends: 1765 [2021-11-25 19:38:08,014 INFO L226 Difference]: Without dead ends: 883 [2021-11-25 19:38:08,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:08,017 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 78 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:08,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 16 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:38:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-25 19:38:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-11-25 19:38:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.217687074829932) internal successors, (1074), 882 states have internal predecessors, (1074), 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) [2021-11-25 19:38:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1074 transitions. [2021-11-25 19:38:08,043 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1074 transitions. Word has length 150 [2021-11-25 19:38:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:08,043 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1074 transitions. [2021-11-25 19:38:08,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-11-25 19:38:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1074 transitions. [2021-11-25 19:38:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-25 19:38:08,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:08,047 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-25 19:38:08,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:38:08,047 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash 796302889, now seen corresponding path program 1 times [2021-11-25 19:38:08,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:08,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807825756] [2021-11-25 19:38:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:08,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 19:38:08,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807825756] [2021-11-25 19:38:08,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807825756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:08,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:08,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:08,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178217933] [2021-11-25 19:38:08,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:08,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:08,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:08,112 INFO L87 Difference]: Start difference. First operand 883 states and 1074 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-25 19:38:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:08,397 INFO L93 Difference]: Finished difference Result 2165 states and 2596 transitions. [2021-11-25 19:38:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 154 [2021-11-25 19:38:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:08,404 INFO L225 Difference]: With dead ends: 2165 [2021-11-25 19:38:08,405 INFO L226 Difference]: Without dead ends: 1203 [2021-11-25 19:38:08,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:08,407 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 64 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:08,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 132 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:38:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-11-25 19:38:08,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1123. [2021-11-25 19:38:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1515151515151516) internal successors, (1292), 1122 states have internal predecessors, (1292), 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) [2021-11-25 19:38:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1292 transitions. [2021-11-25 19:38:08,439 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1292 transitions. Word has length 154 [2021-11-25 19:38:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:08,439 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1292 transitions. [2021-11-25 19:38:08,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-25 19:38:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1292 transitions. [2021-11-25 19:38:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-25 19:38:08,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:08,444 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:38:08,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:38:08,445 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash -464477940, now seen corresponding path program 1 times [2021-11-25 19:38:08,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:08,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965984001] [2021-11-25 19:38:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:08,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:38:08,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965984001] [2021-11-25 19:38:08,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965984001] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:38:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396386996] [2021-11-25 19:38:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:08,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:38:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:38:08,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:38:08,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:38:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:08,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:38:08,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:38:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 19:38:09,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:38:09,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396386996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:09,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:38:09,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-25 19:38:09,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603280276] [2021-11-25 19:38:09,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:09,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:09,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:09,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:38:09,168 INFO L87 Difference]: Start difference. First operand 1123 states and 1292 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-25 19:38:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:09,471 INFO L93 Difference]: Finished difference Result 2485 states and 2899 transitions. [2021-11-25 19:38:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:09,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 178 [2021-11-25 19:38:09,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:09,481 INFO L225 Difference]: With dead ends: 2485 [2021-11-25 19:38:09,481 INFO L226 Difference]: Without dead ends: 1363 [2021-11-25 19:38:09,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:38:09,484 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:09,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:38:09,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-11-25 19:38:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1123. [2021-11-25 19:38:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1568627450980393) internal successors, (1298), 1122 states have internal predecessors, (1298), 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) [2021-11-25 19:38:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1298 transitions. [2021-11-25 19:38:09,522 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1298 transitions. Word has length 178 [2021-11-25 19:38:09,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:09,522 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1298 transitions. [2021-11-25 19:38:09,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-25 19:38:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1298 transitions. [2021-11-25 19:38:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-25 19:38:09,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:09,527 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:38:09,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:38:09,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:38:09,750 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -634565404, now seen corresponding path program 1 times [2021-11-25 19:38:09,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:09,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606626365] [2021-11-25 19:38:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:09,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:38:09,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:09,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606626365] [2021-11-25 19:38:09,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606626365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:09,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:09,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:09,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25477025] [2021-11-25 19:38:09,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:09,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:09,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:09,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:09,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:09,859 INFO L87 Difference]: Start difference. First operand 1123 states and 1298 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-25 19:38:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:10,134 INFO L93 Difference]: Finished difference Result 2485 states and 2862 transitions. [2021-11-25 19:38:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:10,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 196 [2021-11-25 19:38:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:10,140 INFO L225 Difference]: With dead ends: 2485 [2021-11-25 19:38:10,141 INFO L226 Difference]: Without dead ends: 963 [2021-11-25 19:38:10,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:10,148 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:10,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 118 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:38:10,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-11-25 19:38:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-11-25 19:38:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.1081081081081081) internal successors, (1066), 962 states have internal predecessors, (1066), 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) [2021-11-25 19:38:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1066 transitions. [2021-11-25 19:38:10,176 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1066 transitions. Word has length 196 [2021-11-25 19:38:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:10,176 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1066 transitions. [2021-11-25 19:38:10,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-11-25 19:38:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1066 transitions. [2021-11-25 19:38:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-25 19:38:10,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:10,181 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2021-11-25 19:38:10,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:38:10,182 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1733888017, now seen corresponding path program 1 times [2021-11-25 19:38:10,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:10,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577475329] [2021-11-25 19:38:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:10,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-25 19:38:10,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577475329] [2021-11-25 19:38:10,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577475329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:10,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:10,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:10,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141161080] [2021-11-25 19:38:10,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:10,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:10,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:10,285 INFO L87 Difference]: Start difference. First operand 963 states and 1066 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-11-25 19:38:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:10,541 INFO L93 Difference]: Finished difference Result 2085 states and 2331 transitions. [2021-11-25 19:38:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 231 [2021-11-25 19:38:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:10,549 INFO L225 Difference]: With dead ends: 2085 [2021-11-25 19:38:10,549 INFO L226 Difference]: Without dead ends: 1123 [2021-11-25 19:38:10,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:10,551 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 58 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:10,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 99 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:38:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-11-25 19:38:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-11-25 19:38:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.1024955436720143) internal successors, (1237), 1122 states have internal predecessors, (1237), 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) [2021-11-25 19:38:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1237 transitions. [2021-11-25 19:38:10,584 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1237 transitions. Word has length 231 [2021-11-25 19:38:10,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:10,584 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1237 transitions. [2021-11-25 19:38:10,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2021-11-25 19:38:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1237 transitions. [2021-11-25 19:38:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-25 19:38:10,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:10,590 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:38:10,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:38:10,590 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:10,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1262188532, now seen corresponding path program 1 times [2021-11-25 19:38:10,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:10,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027070647] [2021-11-25 19:38:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:10,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-25 19:38:10,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:10,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027070647] [2021-11-25 19:38:10,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027070647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:10,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:10,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:38:10,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938854239] [2021-11-25 19:38:10,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:10,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:38:10,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:38:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:38:10,719 INFO L87 Difference]: Start difference. First operand 1123 states and 1237 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2021-11-25 19:38:11,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:11,076 INFO L93 Difference]: Finished difference Result 2245 states and 2477 transitions. [2021-11-25 19:38:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:38:11,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 254 [2021-11-25 19:38:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:11,084 INFO L225 Difference]: With dead ends: 2245 [2021-11-25 19:38:11,084 INFO L226 Difference]: Without dead ends: 1203 [2021-11-25 19:38:11,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:38:11,086 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 95 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:11,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 125 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:38:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-11-25 19:38:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2021-11-25 19:38:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.0965058236272878) internal successors, (1318), 1202 states have internal predecessors, (1318), 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) [2021-11-25 19:38:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1318 transitions. [2021-11-25 19:38:11,118 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1318 transitions. Word has length 254 [2021-11-25 19:38:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:11,119 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1318 transitions. [2021-11-25 19:38:11,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2021-11-25 19:38:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1318 transitions. [2021-11-25 19:38:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-25 19:38:11,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:38:11,126 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 19:38:11,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:38:11,126 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:38:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:38:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1062975507, now seen corresponding path program 1 times [2021-11-25 19:38:11,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:38:11,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005003556] [2021-11-25 19:38:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:38:11,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:38:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:38:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-25 19:38:11,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:38:11,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005003556] [2021-11-25 19:38:11,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005003556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:38:11,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:38:11,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:38:11,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266127294] [2021-11-25 19:38:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:38:11,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:38:11,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:38:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:38:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:11,314 INFO L87 Difference]: Start difference. First operand 1203 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2021-11-25 19:38:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:38:11,565 INFO L93 Difference]: Finished difference Result 2083 states and 2284 transitions. [2021-11-25 19:38:11,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:38:11,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 304 [2021-11-25 19:38:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:38:11,567 INFO L225 Difference]: With dead ends: 2083 [2021-11-25 19:38:11,567 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:38:11,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:38:11,570 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 60 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:38:11,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 11 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:38:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:38:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:38:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:38:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:38:11,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 304 [2021-11-25 19:38:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:38:11,572 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:38:11,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2021-11-25 19:38:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:38:11,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:38:11,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:38:11,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:38:11,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:38:12,131 INFO L858 garLoopResultBuilder]: For program point L565-1(lines 39 608) no Hoare annotation was computed. [2021-11-25 19:38:12,131 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-25 19:38:12,131 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-25 19:38:12,131 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L569(line 569) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-25 19:38:12,132 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-25 19:38:12,133 INFO L858 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-25 19:38:12,134 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-25 19:38:12,135 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 569) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-25 19:38:12,136 INFO L858 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-25 19:38:12,137 INFO L858 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-25 19:38:12,141 INFO L858 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-25 19:38:12,141 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-25 19:38:12,141 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-25 19:38:12,142 INFO L854 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse5 (not (= ~a11~0 1))) (.cse7 (= ~a19~0 1))) (let ((.cse3 (<= ~a17~0 7)) (.cse4 (<= ~a19~0 0)) (.cse6 (<= 10 ~a28~0)) (.cse0 (<= ~a28~0 10)) (.cse2 (= ~a25~0 1)) (.cse1 (or (and .cse7 .cse5) (and (= ~a17~0 8) (= ~a21~0 1) .cse7)))) (or (and (<= 9 ~a28~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse3 .cse5 .cse4) (and .cse6 .cse2 .cse7) (and (or .cse2 (<= ~a28~0 8)) .cse0 .cse5) (and .cse6 .cse4) (and .cse6 .cse0) (and .cse2 .cse1) (<= ~a28~0 7)))) [2021-11-25 19:38:12,142 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-25 19:38:12,142 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-25 19:38:12,142 INFO L861 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-25 19:38:12,142 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-25 19:38:12,142 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-25 19:38:12,143 INFO L858 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-25 19:38:12,143 INFO L858 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-25 19:38:12,143 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-25 19:38:12,143 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:38:12,143 INFO L858 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-25 19:38:12,143 INFO L858 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-25 19:38:12,144 INFO L854 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse5 (not (= ~a11~0 1))) (.cse7 (= ~a19~0 1))) (let ((.cse3 (<= ~a17~0 7)) (.cse4 (<= ~a19~0 0)) (.cse6 (<= 10 ~a28~0)) (.cse0 (<= ~a28~0 10)) (.cse2 (= ~a25~0 1)) (.cse1 (or (and .cse7 .cse5) (and (= ~a17~0 8) (= ~a21~0 1) .cse7)))) (or (and (<= 9 ~a28~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse3 .cse5 .cse4) (and .cse6 .cse2 .cse7) (and (or .cse2 (<= ~a28~0 8)) .cse0 .cse5) (and .cse6 .cse4) (and .cse6 .cse0) (and .cse2 .cse1) (<= ~a28~0 7)))) [2021-11-25 19:38:12,144 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-25 19:38:12,144 INFO L858 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-25 19:38:12,145 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-25 19:38:12,146 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-25 19:38:12,146 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-25 19:38:12,146 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-25 19:38:12,146 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-25 19:38:12,146 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-25 19:38:12,146 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-25 19:38:12,151 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:38:12,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:38:12,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:38:12 BoogieIcfgContainer [2021-11-25 19:38:12,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:38:12,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:38:12,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:38:12,194 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:38:12,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:38:03" (3/4) ... [2021-11-25 19:38:12,198 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:38:12,231 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2021-11-25 19:38:12,233 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-25 19:38:12,234 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-25 19:38:12,236 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:38:12,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:38:12,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:38:12,398 INFO L158 Benchmark]: Toolchain (without parser) took 10555.43ms. Allocated memory was 109.1MB in the beginning and 251.7MB in the end (delta: 142.6MB). Free memory was 75.2MB in the beginning and 81.7MB in the end (delta: -6.5MB). Peak memory consumption was 136.0MB. Max. memory is 16.1GB. [2021-11-25 19:38:12,399 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory was 61.2MB in the beginning and 61.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:38:12,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.07ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 68.4MB in the end (delta: 6.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:38:12,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.37ms. Allocated memory is still 109.1MB. Free memory was 68.4MB in the beginning and 63.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 19:38:12,402 INFO L158 Benchmark]: Boogie Preprocessor took 71.94ms. Allocated memory is still 109.1MB. Free memory was 63.0MB in the beginning and 58.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:38:12,402 INFO L158 Benchmark]: RCFGBuilder took 1285.87ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 58.8MB in the beginning and 50.1MB in the end (delta: 8.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2021-11-25 19:38:12,403 INFO L158 Benchmark]: TraceAbstraction took 8309.77ms. Allocated memory was 148.9MB in the beginning and 251.7MB in the end (delta: 102.8MB). Free memory was 49.1MB in the beginning and 96.4MB in the end (delta: -47.3MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2021-11-25 19:38:12,404 INFO L158 Benchmark]: Witness Printer took 203.70ms. Allocated memory is still 251.7MB. Free memory was 96.4MB in the beginning and 81.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:38:12,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory was 61.2MB in the beginning and 61.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.07ms. Allocated memory is still 109.1MB. Free memory was 75.0MB in the beginning and 68.4MB in the end (delta: 6.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.37ms. Allocated memory is still 109.1MB. Free memory was 68.4MB in the beginning and 63.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.94ms. Allocated memory is still 109.1MB. Free memory was 63.0MB in the beginning and 58.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1285.87ms. Allocated memory was 109.1MB in the beginning and 148.9MB in the end (delta: 39.8MB). Free memory was 58.8MB in the beginning and 50.1MB in the end (delta: 8.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8309.77ms. Allocated memory was 148.9MB in the beginning and 251.7MB in the end (delta: 102.8MB). Free memory was 49.1MB in the beginning and 96.4MB in the end (delta: -47.3MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. * Witness Printer took 203.70ms. Allocated memory is still 251.7MB. Free memory was 96.4MB in the beginning and 81.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 569]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 12, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 633 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 633 mSDsluCounter, 921 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 723 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2969 IncrementalHoareTripleChecker+Invalid, 3692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 723 mSolverCounterUnsat, 852 mSDtfsCounter, 2969 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=11, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 720 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 227 HoareAnnotationTreeSize, 3 FomulaSimplifications, 526 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 904 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 2129 NumberOfCodeBlocks, 2129 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2116 ConstructedInterpolants, 0 QuantifiedInterpolants, 7110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 2185/2243 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((9 <= a28 && a28 <= 10) && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1))) || ((a25 == 1 && a17 <= 7) && a19 <= 0)) || ((a17 <= 7 && !(a11 == 1)) && a19 <= 0)) || ((10 <= a28 && a25 == 1) && a19 == 1)) || (((a25 == 1 || a28 <= 8) && a28 <= 10) && !(a11 == 1))) || (10 <= a28 && a19 <= 0)) || (10 <= a28 && a28 <= 10)) || (a25 == 1 && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1)))) || a28 <= 7 - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((9 <= a28 && a28 <= 10) && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1))) || ((a25 == 1 && a17 <= 7) && a19 <= 0)) || ((a17 <= 7 && !(a11 == 1)) && a19 <= 0)) || ((10 <= a28 && a25 == 1) && a19 == 1)) || (((a25 == 1 || a28 <= 8) && a28 <= 10) && !(a11 == 1))) || (10 <= a28 && a19 <= 0)) || (10 <= a28 && a28 <= 10)) || (a25 == 1 && ((a19 == 1 && !(a11 == 1)) || ((a17 == 8 && a21 == 1) && a19 == 1)))) || a28 <= 7 RESULT: Ultimate proved your program to be correct! [2021-11-25 19:38:12,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_417cbadf-749c-4c16-8369-55ef9030c837/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE