./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:01:04,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:01:04,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:01:04,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:01:04,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:01:04,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:01:04,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:01:04,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:01:04,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:01:04,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:01:04,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:01:04,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:01:04,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:01:04,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:01:04,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:01:04,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:01:04,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:01:04,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:01:04,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:01:04,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:01:04,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:01:04,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:01:04,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:01:04,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:01:04,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:01:04,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:01:04,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:01:04,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:01:04,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:01:04,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:01:04,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:01:04,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:01:04,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:01:04,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:01:04,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:01:04,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:01:04,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:01:04,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:01:04,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:01:04,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:01:04,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:01:04,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:01:04,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:01:04,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:01:04,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:01:04,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:01:04,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:01:04,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:01:04,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:01:04,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:01:04,539 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:01:04,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:01:04,540 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:01:04,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:01:04,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:01:04,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:01:04,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:01:04,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:01:04,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:01:04,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:01:04,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:01:04,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:01:04,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:01:04,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:01:04,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:01:04,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:01:04,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:01:04,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:01:04,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:01:04,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:01:04,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:01:04,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:01:04,546 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:01:04,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:01:04,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:01:04,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:01:04,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d [2021-11-20 07:01:04,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:01:04,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:01:04,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:01:04,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:01:04,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:01:04,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-20 07:01:04,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/data/d3f151b6a/4e91f7805c1242b8b54f398d7539b044/FLAG0e7887722 [2021-11-20 07:01:05,870 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:01:05,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-20 07:01:05,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/data/d3f151b6a/4e91f7805c1242b8b54f398d7539b044/FLAG0e7887722 [2021-11-20 07:01:06,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/data/d3f151b6a/4e91f7805c1242b8b54f398d7539b044 [2021-11-20 07:01:06,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:01:06,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:01:06,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:01:06,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:01:06,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:01:06,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:01:06" (1/1) ... [2021-11-20 07:01:06,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c9a61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:06, skipping insertion in model container [2021-11-20 07:01:06,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:01:06" (1/1) ... [2021-11-20 07:01:06,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:01:06,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:01:07,142 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-11-20 07:01:07,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-11-20 07:01:07,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-11-20 07:01:07,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-11-20 07:01:07,255 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-11-20 07:01:07,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-11-20 07:01:08,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:01:08,152 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:01:08,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-11-20 07:01:08,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-11-20 07:01:08,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-11-20 07:01:08,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-11-20 07:01:08,344 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-11-20 07:01:08,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-11-20 07:01:08,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:01:08,969 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:01:08,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08 WrapperNode [2021-11-20 07:01:08,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:01:08,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:01:08,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:01:08,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:01:08,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,278 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9273 [2021-11-20 07:01:09,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:01:09,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:01:09,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:01:09,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:01:09,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:01:09,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:01:09,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:01:09,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:01:09,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (1/1) ... [2021-11-20 07:01:09,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:01:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:01:09,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:01:09,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab088ca-5a2b-418e-afea-7ac080885a8d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:01:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:01:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:01:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:01:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:01:10,251 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:01:10,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:01:14,414 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:01:14,454 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:01:14,455 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:01:14,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:01:14 BoogieIcfgContainer [2021-11-20 07:01:14,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:01:14,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:01:14,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:01:14,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:01:14,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:01:06" (1/3) ... [2021-11-20 07:01:14,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:01:14, skipping insertion in model container [2021-11-20 07:01:14,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:01:08" (2/3) ... [2021-11-20 07:01:14,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:01:14, skipping insertion in model container [2021-11-20 07:01:14,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:01:14" (3/3) ... [2021-11-20 07:01:14,474 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-20 07:01:14,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:01:14,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 07:01:14,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:01:14,569 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:01:14,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 07:01:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 1759 states, 1752 states have (on average 1.7973744292237444) internal successors, (3149), 1758 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 07:01:14,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:14,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:14,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:14,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1255419244, now seen corresponding path program 1 times [2021-11-20 07:01:14,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:14,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309381506] [2021-11-20 07:01:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:14,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:15,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:15,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309381506] [2021-11-20 07:01:15,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309381506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:15,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:15,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:01:15,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519448985] [2021-11-20 07:01:15,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:15,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:01:15,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:15,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:01:15,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:15,484 INFO L87 Difference]: Start difference. First operand has 1759 states, 1752 states have (on average 1.7973744292237444) internal successors, (3149), 1758 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:16,033 INFO L93 Difference]: Finished difference Result 2534 states and 4443 transitions. [2021-11-20 07:01:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:01:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-20 07:01:16,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:16,065 INFO L225 Difference]: With dead ends: 2534 [2021-11-20 07:01:16,066 INFO L226 Difference]: Without dead ends: 2330 [2021-11-20 07:01:16,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:16,076 INFO L933 BasicCegarLoop]: 3632 mSDtfsCounter, 1885 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:16,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 5649 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:01:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-11-20 07:01:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2320. [2021-11-20 07:01:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 2314 states have (on average 1.3029386343993086) internal successors, (3015), 2319 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3015 transitions. [2021-11-20 07:01:16,225 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3015 transitions. Word has length 76 [2021-11-20 07:01:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:16,226 INFO L470 AbstractCegarLoop]: Abstraction has 2320 states and 3015 transitions. [2021-11-20 07:01:16,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3015 transitions. [2021-11-20 07:01:16,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 07:01:16,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:16,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:16,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:01:16,236 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:16,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1568234670, now seen corresponding path program 1 times [2021-11-20 07:01:16,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:16,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371519351] [2021-11-20 07:01:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:16,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:16,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:16,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371519351] [2021-11-20 07:01:16,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371519351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:16,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:16,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:01:16,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027271859] [2021-11-20 07:01:16,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:16,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:01:16,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:01:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:16,409 INFO L87 Difference]: Start difference. First operand 2320 states and 3015 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:16,604 INFO L93 Difference]: Finished difference Result 3253 states and 4380 transitions. [2021-11-20 07:01:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:01:16,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-20 07:01:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:16,623 INFO L225 Difference]: With dead ends: 3253 [2021-11-20 07:01:16,623 INFO L226 Difference]: Without dead ends: 2780 [2021-11-20 07:01:16,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:16,628 INFO L933 BasicCegarLoop]: 2353 mSDtfsCounter, 1185 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:16,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3783 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:01:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2021-11-20 07:01:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2770. [2021-11-20 07:01:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2764 states have (on average 1.327424023154848) internal successors, (3669), 2769 states have internal predecessors, (3669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3669 transitions. [2021-11-20 07:01:16,729 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3669 transitions. Word has length 76 [2021-11-20 07:01:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:16,730 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 3669 transitions. [2021-11-20 07:01:16,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3669 transitions. [2021-11-20 07:01:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-20 07:01:16,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:16,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:16,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:01:16,740 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash -801382376, now seen corresponding path program 1 times [2021-11-20 07:01:16,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701698229] [2021-11-20 07:01:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:16,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:16,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:16,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701698229] [2021-11-20 07:01:16,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701698229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:16,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:16,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:01:16,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768008325] [2021-11-20 07:01:16,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:16,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:01:16,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:01:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:01:16,870 INFO L87 Difference]: Start difference. First operand 2770 states and 3669 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:18,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:18,184 INFO L93 Difference]: Finished difference Result 5085 states and 6944 transitions. [2021-11-20 07:01:18,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:01:18,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2021-11-20 07:01:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:18,203 INFO L225 Difference]: With dead ends: 5085 [2021-11-20 07:01:18,203 INFO L226 Difference]: Without dead ends: 2918 [2021-11-20 07:01:18,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:18,213 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 5827 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5827 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:18,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5827 Valid, 1220 Invalid, 894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:01:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2021-11-20 07:01:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 2908. [2021-11-20 07:01:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2902 states have (on average 1.378015161957271) internal successors, (3999), 2907 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3999 transitions. [2021-11-20 07:01:18,378 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3999 transitions. Word has length 76 [2021-11-20 07:01:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:18,378 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 3999 transitions. [2021-11-20 07:01:18,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3999 transitions. [2021-11-20 07:01:18,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 07:01:18,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:18,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:18,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:01:18,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:18,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:18,389 INFO L85 PathProgramCache]: Analyzing trace with hash -845990985, now seen corresponding path program 1 times [2021-11-20 07:01:18,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:18,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610504797] [2021-11-20 07:01:18,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:18,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:18,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:18,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610504797] [2021-11-20 07:01:18,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610504797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:18,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:18,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:01:18,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692273349] [2021-11-20 07:01:18,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:18,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:01:18,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:01:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:01:18,568 INFO L87 Difference]: Start difference. First operand 2908 states and 3999 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:19,802 INFO L93 Difference]: Finished difference Result 5483 states and 7696 transitions. [2021-11-20 07:01:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:01:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2021-11-20 07:01:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:19,827 INFO L225 Difference]: With dead ends: 5483 [2021-11-20 07:01:19,827 INFO L226 Difference]: Without dead ends: 3234 [2021-11-20 07:01:19,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:19,843 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 4846 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:19,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4846 Valid, 1025 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:01:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2021-11-20 07:01:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3220. [2021-11-20 07:01:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 3214 states have (on average 1.3942128189172371) internal successors, (4481), 3219 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4481 transitions. [2021-11-20 07:01:20,080 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4481 transitions. Word has length 77 [2021-11-20 07:01:20,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:20,081 INFO L470 AbstractCegarLoop]: Abstraction has 3220 states and 4481 transitions. [2021-11-20 07:01:20,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4481 transitions. [2021-11-20 07:01:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 07:01:20,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:20,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:20,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:01:20,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:20,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2068935462, now seen corresponding path program 1 times [2021-11-20 07:01:20,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:20,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425911894] [2021-11-20 07:01:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:20,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:20,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:20,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425911894] [2021-11-20 07:01:20,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425911894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:20,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:20,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:01:20,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576843496] [2021-11-20 07:01:20,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:20,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:01:20,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:01:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:01:20,252 INFO L87 Difference]: Start difference. First operand 3220 states and 4481 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:21,374 INFO L93 Difference]: Finished difference Result 7405 states and 10534 transitions. [2021-11-20 07:01:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:01:21,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2021-11-20 07:01:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:21,402 INFO L225 Difference]: With dead ends: 7405 [2021-11-20 07:01:21,402 INFO L226 Difference]: Without dead ends: 4548 [2021-11-20 07:01:21,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:21,412 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 4108 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:21,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4108 Valid, 902 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 07:01:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-11-20 07:01:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 4538. [2021-11-20 07:01:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 4532 states have (on average 1.424757281553398) internal successors, (6457), 4537 states have internal predecessors, (6457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 6457 transitions. [2021-11-20 07:01:21,679 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 6457 transitions. Word has length 77 [2021-11-20 07:01:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:21,680 INFO L470 AbstractCegarLoop]: Abstraction has 4538 states and 6457 transitions. [2021-11-20 07:01:21,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 6457 transitions. [2021-11-20 07:01:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 07:01:21,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:21,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:21,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:01:21,688 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1925332193, now seen corresponding path program 1 times [2021-11-20 07:01:21,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:21,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195620002] [2021-11-20 07:01:21,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:21,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:21,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:21,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195620002] [2021-11-20 07:01:21,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195620002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:21,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:21,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:01:21,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180941273] [2021-11-20 07:01:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:21,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:01:21,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:21,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:01:21,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:21,763 INFO L87 Difference]: Start difference. First operand 4538 states and 6457 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:22,091 INFO L93 Difference]: Finished difference Result 9533 states and 13702 transitions. [2021-11-20 07:01:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:01:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-20 07:01:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:22,131 INFO L225 Difference]: With dead ends: 9533 [2021-11-20 07:01:22,131 INFO L226 Difference]: Without dead ends: 6382 [2021-11-20 07:01:22,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:22,138 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 919 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:22,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 2363 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:01:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2021-11-20 07:01:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 6360. [2021-11-20 07:01:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6354 states have (on average 1.4121813031161472) internal successors, (8973), 6359 states have internal predecessors, (8973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 8973 transitions. [2021-11-20 07:01:22,538 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 8973 transitions. Word has length 78 [2021-11-20 07:01:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:22,538 INFO L470 AbstractCegarLoop]: Abstraction has 6360 states and 8973 transitions. [2021-11-20 07:01:22,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 8973 transitions. [2021-11-20 07:01:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 07:01:22,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:22,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:22,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:01:22,549 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash -525215666, now seen corresponding path program 1 times [2021-11-20 07:01:22,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:22,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089600690] [2021-11-20 07:01:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:22,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:22,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:22,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089600690] [2021-11-20 07:01:22,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089600690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:22,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:22,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:01:22,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458141891] [2021-11-20 07:01:22,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:22,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:01:22,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:22,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:01:22,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:22,622 INFO L87 Difference]: Start difference. First operand 6360 states and 8973 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:23,069 INFO L93 Difference]: Finished difference Result 13352 states and 19004 transitions. [2021-11-20 07:01:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:01:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-20 07:01:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:23,115 INFO L225 Difference]: With dead ends: 13352 [2021-11-20 07:01:23,115 INFO L226 Difference]: Without dead ends: 8882 [2021-11-20 07:01:23,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:23,124 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 938 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:23,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 2375 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:01:23,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2021-11-20 07:01:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 8854. [2021-11-20 07:01:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8854 states, 8848 states have (on average 1.398621157323689) internal successors, (12375), 8853 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8854 states to 8854 states and 12375 transitions. [2021-11-20 07:01:23,611 INFO L78 Accepts]: Start accepts. Automaton has 8854 states and 12375 transitions. Word has length 78 [2021-11-20 07:01:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:23,612 INFO L470 AbstractCegarLoop]: Abstraction has 8854 states and 12375 transitions. [2021-11-20 07:01:23,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 8854 states and 12375 transitions. [2021-11-20 07:01:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-20 07:01:23,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:23,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:23,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:01:23,625 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:23,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash -643699700, now seen corresponding path program 1 times [2021-11-20 07:01:23,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:23,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808157028] [2021-11-20 07:01:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:23,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:23,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808157028] [2021-11-20 07:01:23,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808157028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:23,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:23,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:01:23,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798282795] [2021-11-20 07:01:23,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:23,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:01:23,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:01:23,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:23,728 INFO L87 Difference]: Start difference. First operand 8854 states and 12375 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:24,376 INFO L93 Difference]: Finished difference Result 21801 states and 30896 transitions. [2021-11-20 07:01:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:01:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-20 07:01:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:24,412 INFO L225 Difference]: With dead ends: 21801 [2021-11-20 07:01:24,412 INFO L226 Difference]: Without dead ends: 14372 [2021-11-20 07:01:24,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:01:24,425 INFO L933 BasicCegarLoop]: 1215 mSDtfsCounter, 630 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:24,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2079 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:01:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2021-11-20 07:01:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 14362. [2021-11-20 07:01:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14362 states, 14356 states have (on average 1.401434940094734) internal successors, (20119), 14361 states have internal predecessors, (20119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14362 states to 14362 states and 20119 transitions. [2021-11-20 07:01:25,245 INFO L78 Accepts]: Start accepts. Automaton has 14362 states and 20119 transitions. Word has length 78 [2021-11-20 07:01:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:25,246 INFO L470 AbstractCegarLoop]: Abstraction has 14362 states and 20119 transitions. [2021-11-20 07:01:25,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 14362 states and 20119 transitions. [2021-11-20 07:01:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 07:01:25,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:25,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:25,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:01:25,263 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:25,263 INFO L85 PathProgramCache]: Analyzing trace with hash -453781336, now seen corresponding path program 1 times [2021-11-20 07:01:25,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:25,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791599162] [2021-11-20 07:01:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:25,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:25,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:25,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791599162] [2021-11-20 07:01:25,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791599162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:25,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:25,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:01:25,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063361054] [2021-11-20 07:01:25,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:25,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:01:25,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:25,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:01:25,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:25,374 INFO L87 Difference]: Start difference. First operand 14362 states and 20119 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:28,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:28,677 INFO L93 Difference]: Finished difference Result 51429 states and 73326 transitions. [2021-11-20 07:01:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:01:28,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 79 [2021-11-20 07:01:28,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:28,794 INFO L225 Difference]: With dead ends: 51429 [2021-11-20 07:01:28,794 INFO L226 Difference]: Without dead ends: 46973 [2021-11-20 07:01:28,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:01:28,810 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 7486 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7486 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:28,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7486 Valid, 1794 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:01:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46973 states. [2021-11-20 07:01:30,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46973 to 14410. [2021-11-20 07:01:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14410 states, 14404 states have (on average 1.4012079977783949) internal successors, (20183), 14409 states have internal predecessors, (20183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14410 states to 14410 states and 20183 transitions. [2021-11-20 07:01:30,235 INFO L78 Accepts]: Start accepts. Automaton has 14410 states and 20183 transitions. Word has length 79 [2021-11-20 07:01:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:30,235 INFO L470 AbstractCegarLoop]: Abstraction has 14410 states and 20183 transitions. [2021-11-20 07:01:30,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 14410 states and 20183 transitions. [2021-11-20 07:01:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 07:01:30,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:30,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:30,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:01:30,252 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1721136855, now seen corresponding path program 1 times [2021-11-20 07:01:30,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:30,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386172562] [2021-11-20 07:01:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:30,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:30,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:30,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386172562] [2021-11-20 07:01:30,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386172562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:30,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:30,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:01:30,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897989749] [2021-11-20 07:01:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:30,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:01:30,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:01:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:30,381 INFO L87 Difference]: Start difference. First operand 14410 states and 20183 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:35,214 INFO L93 Difference]: Finished difference Result 59938 states and 85446 transitions. [2021-11-20 07:01:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:01:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 79 [2021-11-20 07:01:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:35,336 INFO L225 Difference]: With dead ends: 59938 [2021-11-20 07:01:35,336 INFO L226 Difference]: Without dead ends: 54166 [2021-11-20 07:01:35,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:01:35,358 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 6904 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6904 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:35,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6904 Valid, 1771 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:01:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54166 states. [2021-11-20 07:01:36,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54166 to 14590. [2021-11-20 07:01:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14590 states, 14584 states have (on average 1.4003702687877126) internal successors, (20423), 14589 states have internal predecessors, (20423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14590 states to 14590 states and 20423 transitions. [2021-11-20 07:01:36,780 INFO L78 Accepts]: Start accepts. Automaton has 14590 states and 20423 transitions. Word has length 79 [2021-11-20 07:01:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:36,780 INFO L470 AbstractCegarLoop]: Abstraction has 14590 states and 20423 transitions. [2021-11-20 07:01:36,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14590 states and 20423 transitions. [2021-11-20 07:01:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 07:01:36,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:36,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:01:36,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1949723738, now seen corresponding path program 1 times [2021-11-20 07:01:36,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:36,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356558203] [2021-11-20 07:01:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:36,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:36,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:36,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356558203] [2021-11-20 07:01:36,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356558203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:36,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:36,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:01:36,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514777102] [2021-11-20 07:01:36,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:36,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:01:36,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:01:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:36,906 INFO L87 Difference]: Start difference. First operand 14590 states and 20423 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:42,626 INFO L93 Difference]: Finished difference Result 54630 states and 77730 transitions. [2021-11-20 07:01:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:01:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 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 79 [2021-11-20 07:01:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:42,735 INFO L225 Difference]: With dead ends: 54630 [2021-11-20 07:01:42,735 INFO L226 Difference]: Without dead ends: 49152 [2021-11-20 07:01:42,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:01:42,758 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 6511 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:42,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6511 Valid, 1747 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:01:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49152 states. [2021-11-20 07:01:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49152 to 14890. [2021-11-20 07:01:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 14884 states have (on average 1.3992878258532653) internal successors, (20827), 14889 states have internal predecessors, (20827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 20827 transitions. [2021-11-20 07:01:44,387 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 20827 transitions. Word has length 79 [2021-11-20 07:01:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:44,388 INFO L470 AbstractCegarLoop]: Abstraction has 14890 states and 20827 transitions. [2021-11-20 07:01:44,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 20827 transitions. [2021-11-20 07:01:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 07:01:44,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:44,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:44,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:01:44,407 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash 583742384, now seen corresponding path program 1 times [2021-11-20 07:01:44,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:44,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209150972] [2021-11-20 07:01:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:44,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:44,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:44,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209150972] [2021-11-20 07:01:44,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209150972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:44,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:44,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:01:44,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481852890] [2021-11-20 07:01:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:44,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:01:44,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:01:44,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:01:44,503 INFO L87 Difference]: Start difference. First operand 14890 states and 20827 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:46,919 INFO L93 Difference]: Finished difference Result 34132 states and 47923 transitions. [2021-11-20 07:01:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:01:46,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 07:01:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:46,948 INFO L225 Difference]: With dead ends: 34132 [2021-11-20 07:01:46,949 INFO L226 Difference]: Without dead ends: 20114 [2021-11-20 07:01:46,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:46,976 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 4166 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4166 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:46,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4166 Valid, 921 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:01:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20114 states. [2021-11-20 07:01:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20114 to 14890. [2021-11-20 07:01:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 14884 states have (on average 1.3955925826390756) internal successors, (20772), 14889 states have internal predecessors, (20772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 20772 transitions. [2021-11-20 07:01:48,507 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 20772 transitions. Word has length 80 [2021-11-20 07:01:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:48,507 INFO L470 AbstractCegarLoop]: Abstraction has 14890 states and 20772 transitions. [2021-11-20 07:01:48,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 20772 transitions. [2021-11-20 07:01:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 07:01:48,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:48,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:48,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:01:48,529 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2109644858, now seen corresponding path program 1 times [2021-11-20 07:01:48,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:48,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78210435] [2021-11-20 07:01:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:48,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:48,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:48,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78210435] [2021-11-20 07:01:48,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78210435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:48,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:48,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:01:48,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853244365] [2021-11-20 07:01:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:48,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:01:48,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:01:48,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:01:48,687 INFO L87 Difference]: Start difference. First operand 14890 states and 20772 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:51,128 INFO L93 Difference]: Finished difference Result 22398 states and 31627 transitions. [2021-11-20 07:01:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:01:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 07:01:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:51,159 INFO L225 Difference]: With dead ends: 22398 [2021-11-20 07:01:51,159 INFO L226 Difference]: Without dead ends: 22396 [2021-11-20 07:01:51,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:01:51,167 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 150 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:51,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 3784 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:01:51,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22396 states. [2021-11-20 07:01:52,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22396 to 14888. [2021-11-20 07:01:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 14883 states have (on average 1.3932002956393201) internal successors, (20735), 14887 states have internal predecessors, (20735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 20735 transitions. [2021-11-20 07:01:52,609 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 20735 transitions. Word has length 80 [2021-11-20 07:01:52,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:52,609 INFO L470 AbstractCegarLoop]: Abstraction has 14888 states and 20735 transitions. [2021-11-20 07:01:52,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 20735 transitions. [2021-11-20 07:01:52,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 07:01:52,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:52,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:52,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:01:52,627 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash 501951513, now seen corresponding path program 1 times [2021-11-20 07:01:52,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:52,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017655729] [2021-11-20 07:01:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:52,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:52,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:52,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017655729] [2021-11-20 07:01:52,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017655729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:52,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:52,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:01:52,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885753873] [2021-11-20 07:01:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:52,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:01:52,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:01:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:01:52,763 INFO L87 Difference]: Start difference. First operand 14888 states and 20735 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:54,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:54,924 INFO L93 Difference]: Finished difference Result 22396 states and 31590 transitions. [2021-11-20 07:01:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:01:54,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 07:01:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:54,966 INFO L225 Difference]: With dead ends: 22396 [2021-11-20 07:01:54,967 INFO L226 Difference]: Without dead ends: 22394 [2021-11-20 07:01:54,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:01:54,973 INFO L933 BasicCegarLoop]: 1329 mSDtfsCounter, 150 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:54,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 3779 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:01:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22394 states. [2021-11-20 07:01:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22394 to 14886. [2021-11-20 07:01:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14886 states, 14882 states have (on average 1.3908076871388255) internal successors, (20698), 14885 states have internal predecessors, (20698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14886 states to 14886 states and 20698 transitions. [2021-11-20 07:01:56,448 INFO L78 Accepts]: Start accepts. Automaton has 14886 states and 20698 transitions. Word has length 80 [2021-11-20 07:01:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:56,448 INFO L470 AbstractCegarLoop]: Abstraction has 14886 states and 20698 transitions. [2021-11-20 07:01:56,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 14886 states and 20698 transitions. [2021-11-20 07:01:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 07:01:56,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:56,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:01:56,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:01:56,467 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:01:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash -327033425, now seen corresponding path program 1 times [2021-11-20 07:01:56,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:56,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121404216] [2021-11-20 07:01:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:56,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:56,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:56,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121404216] [2021-11-20 07:01:56,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121404216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:56,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:56,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:01:56,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516176550] [2021-11-20 07:01:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:56,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:01:56,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:01:56,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:01:56,559 INFO L87 Difference]: Start difference. First operand 14886 states and 20698 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:59,430 INFO L93 Difference]: Finished difference Result 33334 states and 46324 transitions. [2021-11-20 07:01:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:01:59,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 07:01:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:59,455 INFO L225 Difference]: With dead ends: 33334 [2021-11-20 07:01:59,456 INFO L226 Difference]: Without dead ends: 19253 [2021-11-20 07:01:59,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:59,470 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 3591 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:59,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 782 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:01:59,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19253 states. [2021-11-20 07:02:01,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19253 to 19193. [2021-11-20 07:02:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19193 states, 19189 states have (on average 1.3771952681223618) internal successors, (26427), 19192 states have internal predecessors, (26427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19193 states to 19193 states and 26427 transitions. [2021-11-20 07:02:01,407 INFO L78 Accepts]: Start accepts. Automaton has 19193 states and 26427 transitions. Word has length 80 [2021-11-20 07:02:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:02:01,407 INFO L470 AbstractCegarLoop]: Abstraction has 19193 states and 26427 transitions. [2021-11-20 07:02:01,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 19193 states and 26427 transitions. [2021-11-20 07:02:01,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 07:02:01,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:02:01,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:02:01,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:02:01,422 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:02:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 324015783, now seen corresponding path program 1 times [2021-11-20 07:02:01,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:01,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075401530] [2021-11-20 07:02:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:01,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:01,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:01,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075401530] [2021-11-20 07:02:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075401530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:01,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:02:01,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753082660] [2021-11-20 07:02:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:01,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:02:01,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:02:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:02:01,537 INFO L87 Difference]: Start difference. First operand 19193 states and 26427 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:02:10,149 INFO L93 Difference]: Finished difference Result 66799 states and 92740 transitions. [2021-11-20 07:02:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:02:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 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 81 [2021-11-20 07:02:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:02:10,259 INFO L225 Difference]: With dead ends: 66799 [2021-11-20 07:02:10,259 INFO L226 Difference]: Without dead ends: 57415 [2021-11-20 07:02:10,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:02:10,274 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 6149 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6149 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:02:10,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6149 Valid, 1712 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:02:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57415 states. [2021-11-20 07:02:13,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57415 to 19277. [2021-11-20 07:02:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19277 states, 19273 states have (on average 1.3767965547657344) internal successors, (26535), 19276 states have internal predecessors, (26535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:13,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19277 states to 19277 states and 26535 transitions. [2021-11-20 07:02:13,124 INFO L78 Accepts]: Start accepts. Automaton has 19277 states and 26535 transitions. Word has length 81 [2021-11-20 07:02:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:02:13,125 INFO L470 AbstractCegarLoop]: Abstraction has 19277 states and 26535 transitions. [2021-11-20 07:02:13,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 19277 states and 26535 transitions. [2021-11-20 07:02:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-20 07:02:13,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:02:13,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:02:13,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 07:02:13,134 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:02:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:13,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1289503009, now seen corresponding path program 1 times [2021-11-20 07:02:13,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:13,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082096749] [2021-11-20 07:02:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:13,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:13,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:13,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082096749] [2021-11-20 07:02:13,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082096749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:13,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:13,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:02:13,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110418517] [2021-11-20 07:02:13,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:13,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:02:13,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:02:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:02:13,421 INFO L87 Difference]: Start difference. First operand 19277 states and 26535 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:02:24,056 INFO L93 Difference]: Finished difference Result 70268 states and 97892 transitions. [2021-11-20 07:02:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:02:24,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 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 81 [2021-11-20 07:02:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:02:24,162 INFO L225 Difference]: With dead ends: 70268 [2021-11-20 07:02:24,162 INFO L226 Difference]: Without dead ends: 62578 [2021-11-20 07:02:24,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:02:24,180 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 5896 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5896 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:02:24,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5896 Valid, 1713 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:02:24,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62578 states. [2021-11-20 07:02:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62578 to 19784. [2021-11-20 07:02:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19784 states, 19780 states have (on average 1.3761880687563195) internal successors, (27221), 19783 states have internal predecessors, (27221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19784 states to 19784 states and 27221 transitions. [2021-11-20 07:02:27,847 INFO L78 Accepts]: Start accepts. Automaton has 19784 states and 27221 transitions. Word has length 81 [2021-11-20 07:02:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:02:27,850 INFO L470 AbstractCegarLoop]: Abstraction has 19784 states and 27221 transitions. [2021-11-20 07:02:27,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 19784 states and 27221 transitions. [2021-11-20 07:02:27,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-20 07:02:27,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:02:27,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:02:27,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 07:02:27,861 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 07:02:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash -677267389, now seen corresponding path program 1 times [2021-11-20 07:02:27,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:27,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701126915] [2021-11-20 07:02:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:27,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:27,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:27,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701126915] [2021-11-20 07:02:27,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701126915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:27,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:27,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:02:27,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969528154] [2021-11-20 07:02:27,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:27,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:02:27,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:02:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:02:27,966 INFO L87 Difference]: Start difference. First operand 19784 states and 27221 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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)