./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test23-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG --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 4c2b7377d2b430a15e16457512411598a883b6588c528bba211e64f887de4d8e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG --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 4c2b7377d2b430a15e16457512411598a883b6588c528bba211e64f887de4d8e ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:27:01,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:27:01,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:27:01,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:27:01,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:27:01,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:27:01,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:27:01,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:27:01,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:27:01,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:27:01,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:27:01,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:27:01,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:27:01,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:27:01,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:27:01,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:27:01,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:27:01,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:27:01,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:27:01,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:27:01,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:27:01,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:27:01,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:27:01,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:27:01,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:27:01,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:27:01,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:27:01,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:27:01,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:27:01,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:27:01,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:27:01,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:27:01,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:27:01,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:27:01,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:27:01,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:27:01,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:27:01,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:27:01,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:27:01,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:27:01,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:27:01,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:27:01,550 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:27:01,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:27:01,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:27:01,553 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:27:01,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:27:01,553 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:27:01,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:27:01,554 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:27:01,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:27:01,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:27:01,555 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:27:01,556 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:27:01,556 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:27:01,556 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:27:01,556 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:27:01,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:27:01,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:27:01,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:27:01,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:27:01,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:27:01,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:27:01,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:27:01,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:27:01,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:27:01,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:27:01,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:27:01,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:27:01,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:27:01,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:27:01,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:27:01,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:27:01,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:27:01,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:27:01,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:27:01,564 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:27:01,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:27:01,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:27:01,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:27:01,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:27:01,566 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_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c2b7377d2b430a15e16457512411598a883b6588c528bba211e64f887de4d8e [2021-10-29 05:27:01,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:27:01,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:27:01,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:27:02,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:27:02,001 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:27:02,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-regression/test23-1.c [2021-10-29 05:27:02,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/c915f22f4/bdeb6f04d24143e7a42e249a793293d5/FLAG48eedb9ab [2021-10-29 05:27:02,809 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:27:02,810 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/sv-benchmarks/c/ldv-regression/test23-1.c [2021-10-29 05:27:02,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/c915f22f4/bdeb6f04d24143e7a42e249a793293d5/FLAG48eedb9ab [2021-10-29 05:27:03,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/c915f22f4/bdeb6f04d24143e7a42e249a793293d5 [2021-10-29 05:27:03,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:27:03,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:27:03,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:27:03,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:27:03,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:27:03,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fee402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03, skipping insertion in model container [2021-10-29 05:27:03,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:27:03,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:27:03,418 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/sv-benchmarks/c/ldv-regression/test23-1.c[1075,1088] [2021-10-29 05:27:03,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:27:03,439 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:27:03,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/sv-benchmarks/c/ldv-regression/test23-1.c[1075,1088] [2021-10-29 05:27:03,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:27:03,495 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:27:03,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03 WrapperNode [2021-10-29 05:27:03,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:27:03,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:27:03,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:27:03,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:27:03,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:27:03,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:27:03,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:27:03,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:27:03,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:27:03,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:27:03,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:27:03,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:27:03,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (1/1) ... [2021-10-29 05:27:03,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:27:03,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:27:03,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:27:03,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:27:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:27:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:27:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:27:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:27:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:27:03,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:27:04,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:27:04,267 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-29 05:27:04,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:04 BoogieIcfgContainer [2021-10-29 05:27:04,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:27:04,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:27:04,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:27:04,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:27:04,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:27:03" (1/3) ... [2021-10-29 05:27:04,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6021b008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:04, skipping insertion in model container [2021-10-29 05:27:04,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:03" (2/3) ... [2021-10-29 05:27:04,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6021b008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:04, skipping insertion in model container [2021-10-29 05:27:04,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:04" (3/3) ... [2021-10-29 05:27:04,280 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-1.c [2021-10-29 05:27:04,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:27:04,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:27:04,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:27:04,360 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 [2021-10-29 05:27:04,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:27:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:27:04,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:04,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:27:04,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:27:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1436433901, now seen corresponding path program 1 times [2021-10-29 05:27:04,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:27:04,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134664343] [2021-10-29 05:27:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:04,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:27:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:04,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:27:04,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134664343] [2021-10-29 05:27:04,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134664343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:04,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:04,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:27:04,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119026842] [2021-10-29 05:27:04,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:27:04,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:27:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:27:04,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:27:04,687 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:04,707 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-10-29 05:27:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:27:04,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-29 05:27:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:04,720 INFO L225 Difference]: With dead ends: 18 [2021-10-29 05:27:04,720 INFO L226 Difference]: Without dead ends: 8 [2021-10-29 05:27:04,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:27:04,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-29 05:27:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-29 05:27:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-29 05:27:04,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-29 05:27:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:04,762 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-29 05:27:04,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-29 05:27:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:27:04,763 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:04,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:04,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:27:04,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:27:04,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1586974135, now seen corresponding path program 1 times [2021-10-29 05:27:04,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:27:04,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786817476] [2021-10-29 05:27:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:04,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:27:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:05,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:27:05,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786817476] [2021-10-29 05:27:05,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786817476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:05,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:05,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:27:05,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392933599] [2021-10-29 05:27:05,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:27:05,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:27:05,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:27:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:27:05,006 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:05,085 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-29 05:27:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:27:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-29 05:27:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:05,088 INFO L225 Difference]: With dead ends: 14 [2021-10-29 05:27:05,088 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 05:27:05,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:27:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 05:27:05,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-29 05:27:05,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-29 05:27:05,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-29 05:27:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:05,098 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-29 05:27:05,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:05,099 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-29 05:27:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:27:05,100 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:05,100 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:05,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:27:05,102 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:27:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:05,110 INFO L85 PathProgramCache]: Analyzing trace with hash -337674460, now seen corresponding path program 1 times [2021-10-29 05:27:05,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:27:05,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857300706] [2021-10-29 05:27:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:05,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:27:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:05,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:27:05,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857300706] [2021-10-29 05:27:05,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857300706] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:27:05,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990488815] [2021-10-29 05:27:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:05,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:27:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:27:05,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:27:05,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:27:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:05,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 05:27:05,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:05,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2021-10-29 05:27:16,017 INFO L354 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2021-10-29 05:27:16,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 19 [2021-10-29 05:27:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:16,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:16,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-10-29 05:27:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:16,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990488815] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:16,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1589914903] [2021-10-29 05:27:16,159 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 05:27:16,160 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:27:16,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:27:16,172 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:27:16,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:27:16,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 05:27:16,231 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,234 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 05:27:16,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 05:27:16,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,242 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-29 05:27:16,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-29 05:27:16,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,250 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 05:27:16,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 05:27:16,254 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,257 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 05:27:16,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 05:27:16,261 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,264 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-29 05:27:16,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 05:27:16,268 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-10-29 05:27:16,273 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:27:16,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-29 05:27:16,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-10-29 05:27:16,331 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_23|], 55=[|v_#valid_24|]} [2021-10-29 05:27:16,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-10-29 05:27:16,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,495 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-10-29 05:27:16,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,652 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:16,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-10-29 05:27:16,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,783 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:16,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:16,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-10-29 05:27:16,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:16,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:27:16,921 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:16,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:27:17,057 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:17,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,341 INFO L244 Elim1Store]: Index analysis took 161 ms [2021-10-29 05:27:17,448 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-29 05:27:17,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-10-29 05:27:17,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:17,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:17,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:17,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:17,459 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,738 INFO L244 Elim1Store]: Index analysis took 170 ms [2021-10-29 05:27:17,824 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-29 05:27:17,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-10-29 05:27:17,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:17,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:17,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:17,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:17,837 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:17,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:17,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,047 INFO L244 Elim1Store]: Index analysis took 118 ms [2021-10-29 05:27:18,139 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-29 05:27:18,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-10-29 05:27:18,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:18,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:18,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:18,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:18,176 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:18,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:27:18,365 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-29 05:27:18,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-10-29 05:27:18,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:18,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:18,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:18,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:27:18,377 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-10-29 05:27:18,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:27:18,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:27:18,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:18,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:27:18,684 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:210) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:63) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-29 05:27:18,688 INFO L168 Benchmark]: Toolchain (without parser) took 15547.57 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 90.5 MB in the beginning and 99.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:18,689 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:27:18,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.12 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 90.6 MB in the end (delta: -122.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:18,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:27:18,691 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 115.3 MB. Free memory was 88.9 MB in the beginning and 87.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:18,692 INFO L168 Benchmark]: RCFGBuilder took 703.72 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 67.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:18,693 INFO L168 Benchmark]: TraceAbstraction took 14414.79 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 67.1 MB in the beginning and 99.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:18,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.12 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 90.6 MB in the end (delta: -122.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.38 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 115.3 MB. Free memory was 88.9 MB in the beginning and 87.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 703.72 ms. Allocated memory is still 115.3 MB. Free memory was 87.7 MB in the beginning and 67.5 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14414.79 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 67.1 MB in the beginning and 99.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:210) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-29 05:27:18,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:27:21,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:27:21,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:27:21,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:27:21,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:27:21,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:27:21,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:27:21,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:27:21,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:27:21,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:27:21,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:27:21,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:27:21,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:27:21,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:27:21,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:27:21,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:27:21,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:27:21,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:27:21,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:27:21,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:27:21,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:27:21,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:27:21,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:27:21,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:27:21,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:27:21,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:27:21,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:27:21,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:27:21,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:27:21,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:27:21,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:27:21,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:27:21,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:27:21,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:27:21,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:27:21,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:27:21,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:27:21,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:27:21,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:27:21,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:27:21,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:27:21,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:27:21,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:27:21,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:27:21,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:27:21,822 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:27:21,822 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:27:21,823 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:27:21,823 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:27:21,823 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:27:21,824 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:27:21,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:27:21,825 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:27:21,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:27:21,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:27:21,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:27:21,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:27:21,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:27:21,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:27:21,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:27:21,828 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:27:21,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:27:21,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:27:21,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:27:21,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:27:21,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:27:21,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:27:21,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:27:21,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:27:21,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:27:21,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:27:21,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:27:21,831 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:27:21,831 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:27:21,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:27:21,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:27:21,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:27:21,832 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c2b7377d2b430a15e16457512411598a883b6588c528bba211e64f887de4d8e [2021-10-29 05:27:22,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:27:22,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:27:22,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:27:22,279 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:27:22,280 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:27:22,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-regression/test23-1.c [2021-10-29 05:27:22,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/4161af925/b41fa22ca9284e14ba079df89c07ed5d/FLAGe56f9cb07 [2021-10-29 05:27:23,062 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:27:23,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/sv-benchmarks/c/ldv-regression/test23-1.c [2021-10-29 05:27:23,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/4161af925/b41fa22ca9284e14ba079df89c07ed5d/FLAGe56f9cb07 [2021-10-29 05:27:23,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/data/4161af925/b41fa22ca9284e14ba079df89c07ed5d [2021-10-29 05:27:23,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:27:23,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:27:23,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:27:23,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:27:23,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:27:23,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36023307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23, skipping insertion in model container [2021-10-29 05:27:23,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:27:23,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:27:23,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/sv-benchmarks/c/ldv-regression/test23-1.c[1075,1088] [2021-10-29 05:27:23,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:27:23,686 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:27:23,708 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/sv-benchmarks/c/ldv-regression/test23-1.c[1075,1088] [2021-10-29 05:27:23,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:27:23,736 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:27:23,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23 WrapperNode [2021-10-29 05:27:23,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:27:23,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:27:23,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:27:23,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:27:23,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:27:23,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:27:23,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:27:23,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:27:23,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:27:23,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:27:23,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:27:23,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:27:23,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (1/1) ... [2021-10-29 05:27:23,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:27:23,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:27:23,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:27:23,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:27:24,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:27:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:27:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:27:24,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:27:24,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:27:24,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:27:24,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:27:24,484 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-29 05:27:24,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:24 BoogieIcfgContainer [2021-10-29 05:27:24,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:27:24,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:27:24,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:27:24,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:27:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:27:23" (1/3) ... [2021-10-29 05:27:24,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fec0cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:24, skipping insertion in model container [2021-10-29 05:27:24,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:27:23" (2/3) ... [2021-10-29 05:27:24,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fec0cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:24, skipping insertion in model container [2021-10-29 05:27:24,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:24" (3/3) ... [2021-10-29 05:27:24,496 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-1.c [2021-10-29 05:27:24,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:27:24,513 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:27:24,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:27:24,602 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 [2021-10-29 05:27:24,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:27:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:27:24,648 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:24,650 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:24,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:27:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:24,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2100293056, now seen corresponding path program 1 times [2021-10-29 05:27:24,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:24,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321400933] [2021-10-29 05:27:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:24,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:24,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:24,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:24,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:27:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:27:24,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:24,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:25,071 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:25,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321400933] [2021-10-29 05:27:25,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321400933] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:25,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:25,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:27:25,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994777663] [2021-10-29 05:27:25,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:27:25,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:27:25,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:27:25,134 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:25,155 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-10-29 05:27:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:27:25,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:27:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:25,168 INFO L225 Difference]: With dead ends: 30 [2021-10-29 05:27:25,168 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 05:27:25,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:27:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 05:27:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-29 05:27:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-29 05:27:25,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2021-10-29 05:27:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:25,216 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-29 05:27:25,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-29 05:27:25,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:27:25,218 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:25,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:25,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:25,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:25,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:27:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash 478567452, now seen corresponding path program 1 times [2021-10-29 05:27:25,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:25,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928414578] [2021-10-29 05:27:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:25,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:25,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:25,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:27:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:25,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 05:27:25,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:25,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-29 05:27:26,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-29 05:27:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:26,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:26,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 56 [2021-10-29 05:27:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:26,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:26,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928414578] [2021-10-29 05:27:26,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928414578] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:27:26,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:27:26,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-10-29 05:27:26,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154448153] [2021-10-29 05:27:26,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:27:26,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:26,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:27:26,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:27:26,674 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:28,383 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-10-29 05:27:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-29 05:27:28,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:27:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:28,388 INFO L225 Difference]: With dead ends: 71 [2021-10-29 05:27:28,388 INFO L226 Difference]: Without dead ends: 66 [2021-10-29 05:27:28,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2021-10-29 05:27:28,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-29 05:27:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 21. [2021-10-29 05:27:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-29 05:27:28,417 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2021-10-29 05:27:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:28,417 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-29 05:27:28,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-29 05:27:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:27:28,419 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:28,419 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:28,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:28,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:28,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:27:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1495361690, now seen corresponding path program 1 times [2021-10-29 05:27:28,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:28,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529520294] [2021-10-29 05:27:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:28,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:28,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:28,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:28,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:27:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:28,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 05:27:28,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:29,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-29 05:27:29,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-29 05:27:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:29,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:29,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 56 [2021-10-29 05:27:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:29,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:29,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529520294] [2021-10-29 05:27:29,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529520294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:29,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [585272312] [2021-10-29 05:27:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:29,928 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:27:29,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:27:29,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:27:29,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-29 05:27:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:30,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-29 05:27:30,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:30,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-10-29 05:27:31,703 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-10-29 05:27:31,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 21 [2021-10-29 05:27:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:31,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:32,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 156 [2021-10-29 05:27:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:32,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [585272312] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:32,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337417268] [2021-10-29 05:27:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:27:32,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:27:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:27:32,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:27:32,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:27:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:27:32,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-29 05:27:32,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:33,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2021-10-29 05:27:33,927 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-29 05:27:33,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 21 [2021-10-29 05:27:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:33,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:34,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2021-10-29 05:27:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:34,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337417268] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:34,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:27:34,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 14, 14, 13, 13] total 38 [2021-10-29 05:27:34,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119679020] [2021-10-29 05:27:34,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-29 05:27:34,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-29 05:27:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2021-10-29 05:27:34,400 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:27:41,432 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2021-10-29 05:27:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-29 05:27:41,433 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 05:27:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:27:41,436 INFO L225 Difference]: With dead ends: 103 [2021-10-29 05:27:41,436 INFO L226 Difference]: Without dead ends: 98 [2021-10-29 05:27:41,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1535, Invalid=6837, Unknown=0, NotChecked=0, Total=8372 [2021-10-29 05:27:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-29 05:27:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 29. [2021-10-29 05:27:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-29 05:27:41,454 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2021-10-29 05:27:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:27:41,454 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-29 05:27:41,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:27:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-29 05:27:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:27:41,456 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:27:41,457 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:27:41,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:41,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:41,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:42,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:27:42,070 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:27:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:27:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -597070086, now seen corresponding path program 2 times [2021-10-29 05:27:42,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:27:42,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413583815] [2021-10-29 05:27:42,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:27:42,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:27:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:27:42,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:27:42,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:27:42,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 05:27:42,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:27:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-29 05:27:42,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:42,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-29 05:27:43,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-29 05:27:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:43,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:44,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2021-10-29 05:27:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:44,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:27:44,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413583815] [2021-10-29 05:27:44,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413583815] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:44,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1922753188] [2021-10-29 05:27:44,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:27:44,400 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:27:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:27:44,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:27:44,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-29 05:27:44,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 05:27:44,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:27:44,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-29 05:27:44,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:45,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-10-29 05:27:47,167 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-10-29 05:27:47,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 21 [2021-10-29 05:27:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:47,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:48,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 156 [2021-10-29 05:27:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:48,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1922753188] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:48,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123828466] [2021-10-29 05:27:48,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-29 05:27:48,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:27:48,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:27:48,739 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:27:48,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 05:27:49,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-29 05:27:49,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:27:49,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-29 05:27:49,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:27:49,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-10-29 05:27:51,005 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-10-29 05:27:51,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 21 [2021-10-29 05:27:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:51,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:27:53,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 156 [2021-10-29 05:27:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:27:53,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123828466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:27:53,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:27:53,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18, 18, 20, 20] total 56 [2021-10-29 05:27:53,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687144204] [2021-10-29 05:27:53,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-29 05:27:53,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:27:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-29 05:27:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=2581, Unknown=0, NotChecked=0, Total=3080 [2021-10-29 05:27:53,519 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 56 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 56 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:28:26,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:28:26,929 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2021-10-29 05:28:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-10-29 05:28:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 56 states have internal predecessors, (89), 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 28 [2021-10-29 05:28:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:28:26,934 INFO L225 Difference]: With dead ends: 187 [2021-10-29 05:28:26,934 INFO L226 Difference]: Without dead ends: 182 [2021-10-29 05:28:26,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 100 SyntacticMatches, 8 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10544 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=5099, Invalid=25003, Unknown=0, NotChecked=0, Total=30102 [2021-10-29 05:28:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-29 05:28:26,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 45. [2021-10-29 05:28:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:28:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-10-29 05:28:26,962 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 28 [2021-10-29 05:28:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:28:26,962 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-10-29 05:28:26,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 56 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:28:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-10-29 05:28:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-29 05:28:26,965 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:28:26,965 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:28:26,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-29 05:28:27,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-10-29 05:28:27,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:28:27,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:28:27,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:28:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:28:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash 958970451, now seen corresponding path program 3 times [2021-10-29 05:28:27,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:28:27,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72692141] [2021-10-29 05:28:27,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:28:27,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:28:27,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:28:27,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:28:27,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:28:28,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-29 05:28:28,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-29 05:28:28,079 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:28:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:28:28,297 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:28:28,297 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:28:28,298 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:28:28,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:28:28,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:28:28,520 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2021-10-29 05:28:28,523 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:28:28,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:28:28 BoogieIcfgContainer [2021-10-29 05:28:28,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:28:28,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:28:28,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:28:28,598 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:28:28,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:24" (3/4) ... [2021-10-29 05:28:28,601 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:28:28,708 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:28:28,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:28:28,709 INFO L168 Benchmark]: Toolchain (without parser) took 65279.60 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 47.0 MB in the beginning and 64.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:28:28,710 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 63.6 MB in the beginning and 63.5 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:28:28,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.64 ms. Allocated memory is still 81.8 MB. Free memory was 46.8 MB in the beginning and 66.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:28:28,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.31 ms. Allocated memory is still 81.8 MB. Free memory was 66.3 MB in the beginning and 64.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:28:28,712 INFO L168 Benchmark]: Boogie Preprocessor took 69.05 ms. Allocated memory is still 81.8 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:28:28,713 INFO L168 Benchmark]: RCFGBuilder took 588.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 51.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:28:28,713 INFO L168 Benchmark]: TraceAbstraction took 64108.72 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 50.8 MB in the beginning and 70.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:28:28,714 INFO L168 Benchmark]: Witness Printer took 110.60 ms. Allocated memory is still 107.0 MB. Free memory was 70.1 MB in the beginning and 64.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:28:28,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 63.6 MB in the beginning and 63.5 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.64 ms. Allocated memory is still 81.8 MB. Free memory was 46.8 MB in the beginning and 66.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.31 ms. Allocated memory is still 81.8 MB. Free memory was 66.3 MB in the beginning and 64.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.05 ms. Allocated memory is still 81.8 MB. Free memory was 64.6 MB in the beginning and 63.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 588.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 51.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 64108.72 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 50.8 MB in the beginning and 70.1 MB in the end (delta: -19.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Witness Printer took 110.60 ms. Allocated memory is still 107.0 MB. Free memory was 70.1 MB in the beginning and 64.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 52]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] struct dummy d1, d2; VAL [d1={10:0}, d2={3:0}] [L16] d1.a = __VERIFIER_nondet_int() [L17] d1.b = __VERIFIER_nondet_int() [L19] d2.a = __VERIFIER_nondet_int() [L20] d2.b = __VERIFIER_nondet_int() [L25] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={10:0}, d2={3:0}] [L25] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L36] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L25] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={10:0}, d2={3:0}] [L25] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L36] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L37] int i = __VERIFIER_nondet_int(); [L38] COND TRUE pd1 != 0 && pd1 == pd2 && i >= 0 && i < 10 [L39] pd2->array[i] = i [L40] int *pa = &pd1->array[i]; [L41] EXPR pd2->array[i] [L41] i = pd2->array[i] - 10 [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={10:0}, d2={3:0}] [L42] EXPR \read(*pa) VAL [d1={10:0}, d2={3:0}] [L42] COND FALSE !(i <= *pa) [L30] EXPR s1->array[i] [L30] return s1->array[i] == i; [L45] COND TRUE !check(pd2, i) [L52] reach_error() VAL [d1={10:0}, d2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.9s, OverallIterations: 5, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 42.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 993 SDslu, 331 SDs, 0 SdLazy, 1087 SolverSat, 652 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 527 GetRequests, 222 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13388 ImplicationChecksByTransitivity, 44.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 213, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 251 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 334 ConstructedInterpolants, 36 QuantifiedInterpolants, 4174 SizeOfPredicates, 92 NumberOfNonLiveVariables, 615 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 0/288 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:28:28,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67e162f-62d1-41fd-be43-ad5de4b83b40/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...