./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y --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 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:44:47,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:44:47,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:44:47,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:44:47,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:44:47,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:44:47,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:44:47,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:44:47,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:44:47,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:44:47,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:44:47,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:44:47,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:44:47,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:44:47,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:44:47,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:44:47,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:44:47,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:44:47,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:44:47,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:44:47,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:44:47,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:44:47,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:44:47,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:44:47,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:44:47,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:44:47,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:44:47,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:44:47,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:44:47,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:44:47,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:44:47,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:44:47,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:44:47,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:44:47,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:44:47,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:44:47,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:44:47,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:44:47,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:44:47,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:44:47,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:44:47,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:44:47,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:44:47,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:44:47,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:44:47,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:44:47,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:44:47,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:44:47,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:44:47,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:44:47,700 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:44:47,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:44:47,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:44:47,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:44:47,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:44:47,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:44:47,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:44:47,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:44:47,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:44:47,702 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:44:47,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:44:47,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:44:47,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:44:47,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:44:47,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:44:47,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:44:47,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:44:47,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:44:47,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:44:47,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:44:47,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:44:47,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:44:47,710 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:44:47,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:44:47,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:44:47,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:44:47,711 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_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62ddbd8e479b9a9ff0259307914371bc7c12caf38dd9ff6b9d8872f71f8db1de [2021-11-13 18:44:48,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:44:48,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:44:48,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:44:48,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:44:48,049 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:44:48,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-13 18:44:48,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/data/dccc65970/fdc4a827696f4479ae818af71e0d9dc5/FLAG3218676bc [2021-11-13 18:44:48,826 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:44:48,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-13 18:44:48,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/data/dccc65970/fdc4a827696f4479ae818af71e0d9dc5/FLAG3218676bc [2021-11-13 18:44:49,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/data/dccc65970/fdc4a827696f4479ae818af71e0d9dc5 [2021-11-13 18:44:49,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:44:49,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:44:49,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:44:49,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:44:49,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:44:49,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:44:49" (1/1) ... [2021-11-13 18:44:49,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31438bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:49, skipping insertion in model container [2021-11-13 18:44:49,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:44:49" (1/1) ... [2021-11-13 18:44:49,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:44:49,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:44:49,475 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2021-11-13 18:44:49,517 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2021-11-13 18:44:49,531 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2021-11-13 18:44:49,539 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2021-11-13 18:44:49,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:44:49,807 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:44:49,871 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8125,8138] [2021-11-13 18:44:49,905 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14955,14968] [2021-11-13 18:44:49,915 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17042,17055] [2021-11-13 18:44:49,925 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18066,18079] [2021-11-13 18:44:50,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:44:50,080 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:44:50,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50 WrapperNode [2021-11-13 18:44:50,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:44:50,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:44:50,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:44:50,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:44:50,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:44:50,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:44:50,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:44:50,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:44:50,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:44:50,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:44:50,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:44:50,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:44:50,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (1/1) ... [2021-11-13 18:44:50,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:44:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:44:50,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:44:50,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:44:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:44:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:44:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:44:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:44:52,173 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:44:52,174 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:44:52,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:44:52 BoogieIcfgContainer [2021-11-13 18:44:52,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:44:52,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:44:52,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:44:52,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:44:52,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:44:49" (1/3) ... [2021-11-13 18:44:52,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8753af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:44:52, skipping insertion in model container [2021-11-13 18:44:52,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:50" (2/3) ... [2021-11-13 18:44:52,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8753af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:44:52, skipping insertion in model container [2021-11-13 18:44:52,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:44:52" (3/3) ... [2021-11-13 18:44:52,190 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-13 18:44:52,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:44:52,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-13 18:44:52,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:44:52,273 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 [2021-11-13 18:44:52,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-13 18:44:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 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) [2021-11-13 18:44:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-13 18:44:52,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:52,331 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] [2021-11-13 18:44:52,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:52,337 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2021-11-13 18:44:52,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:52,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572293018] [2021-11-13 18:44:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:52,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:52,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:52,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572293018] [2021-11-13 18:44:52,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572293018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:52,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:52,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:44:52,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661707747] [2021-11-13 18:44:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:52,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:44:52,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:44:52,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:44:52,775 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 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 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-11-13 18:44:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:53,482 INFO L93 Difference]: Finished difference Result 833 states and 1472 transitions. [2021-11-13 18:44:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:44:53,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-11-13 18:44:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:53,515 INFO L225 Difference]: With dead ends: 833 [2021-11-13 18:44:53,516 INFO L226 Difference]: Without dead ends: 484 [2021-11-13 18:44:53,525 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 [2021-11-13 18:44:53,531 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 2293 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 417.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.73ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 510.21ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:53,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 576 Invalid, 317 Unknown, 0 Unchecked, 22.73ms Time], IncrementalHoareTripleChecker [20 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 510.21ms Time] [2021-11-13 18:44:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-13 18:44:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2021-11-13 18:44:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 474 states have (on average 1.3755274261603376) internal successors, (652), 477 states have internal predecessors, (652), 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) [2021-11-13 18:44:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 652 transitions. [2021-11-13 18:44:53,651 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 652 transitions. Word has length 50 [2021-11-13 18:44:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:53,652 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 652 transitions. [2021-11-13 18:44:53,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-11-13 18:44:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 652 transitions. [2021-11-13 18:44:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:44:53,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:53,662 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] [2021-11-13 18:44:53,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:44:53,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2021-11-13 18:44:53,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:53,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642064791] [2021-11-13 18:44:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:53,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:53,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:53,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642064791] [2021-11-13 18:44:53,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642064791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:53,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:53,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:44:53,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576079490] [2021-11-13 18:44:53,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:53,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:44:53,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:44:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:44:53,887 INFO L87 Difference]: Start difference. First operand 478 states and 652 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-13 18:44:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:53,965 INFO L93 Difference]: Finished difference Result 938 states and 1336 transitions. [2021-11-13 18:44:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:44:53,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-13 18:44:53,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:53,972 INFO L225 Difference]: With dead ends: 938 [2021-11-13 18:44:53,972 INFO L226 Difference]: Without dead ends: 684 [2021-11-13 18:44:53,975 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 [2021-11-13 18:44:53,976 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 272 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:53,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 860 Invalid, 21 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 26.10ms Time] [2021-11-13 18:44:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-11-13 18:44:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2021-11-13 18:44:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 674 states have (on average 1.4080118694362018) internal successors, (949), 677 states have internal predecessors, (949), 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) [2021-11-13 18:44:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 949 transitions. [2021-11-13 18:44:54,034 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 949 transitions. Word has length 51 [2021-11-13 18:44:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:54,035 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 949 transitions. [2021-11-13 18:44:54,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-13 18:44:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 949 transitions. [2021-11-13 18:44:54,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:44:54,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:54,043 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] [2021-11-13 18:44:54,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:44:54,044 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2021-11-13 18:44:54,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:54,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230784106] [2021-11-13 18:44:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:54,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:54,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:54,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230784106] [2021-11-13 18:44:54,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230784106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:54,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:54,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:44:54,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459434971] [2021-11-13 18:44:54,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:54,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:44:54,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:44:54,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:44:54,217 INFO L87 Difference]: Start difference. First operand 678 states and 949 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-13 18:44:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:54,308 INFO L93 Difference]: Finished difference Result 1307 states and 1856 transitions. [2021-11-13 18:44:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:44:54,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-13 18:44:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:54,317 INFO L225 Difference]: With dead ends: 1307 [2021-11-13 18:44:54,318 INFO L226 Difference]: Without dead ends: 917 [2021-11-13 18:44:54,322 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 [2021-11-13 18:44:54,325 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 366 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:54,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 932 Invalid, 23 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 34.18ms Time] [2021-11-13 18:44:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-13 18:44:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2021-11-13 18:44:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 903 states have (on average 1.3820598006644518) internal successors, (1248), 906 states have internal predecessors, (1248), 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) [2021-11-13 18:44:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1248 transitions. [2021-11-13 18:44:54,382 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1248 transitions. Word has length 51 [2021-11-13 18:44:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:54,382 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1248 transitions. [2021-11-13 18:44:54,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-13 18:44:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1248 transitions. [2021-11-13 18:44:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:44:54,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:54,386 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] [2021-11-13 18:44:54,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:44:54,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2021-11-13 18:44:54,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:54,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163274575] [2021-11-13 18:44:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:54,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:54,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:54,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163274575] [2021-11-13 18:44:54,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163274575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:54,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:54,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:44:54,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169926403] [2021-11-13 18:44:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:54,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:44:54,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:44:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:44:54,500 INFO L87 Difference]: Start difference. First operand 907 states and 1248 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-13 18:44:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:54,627 INFO L93 Difference]: Finished difference Result 1892 states and 2673 transitions. [2021-11-13 18:44:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:44:54,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-13 18:44:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:54,640 INFO L225 Difference]: With dead ends: 1892 [2021-11-13 18:44:54,640 INFO L226 Difference]: Without dead ends: 1391 [2021-11-13 18:44:54,642 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 [2021-11-13 18:44:54,651 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 263 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:54,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 924 Invalid, 41 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 52.23ms Time] [2021-11-13 18:44:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-13 18:44:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1384. [2021-11-13 18:44:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1380 states have (on average 1.3898550724637682) internal successors, (1918), 1383 states have internal predecessors, (1918), 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) [2021-11-13 18:44:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1918 transitions. [2021-11-13 18:44:54,760 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1918 transitions. Word has length 51 [2021-11-13 18:44:54,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:54,764 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 1918 transitions. [2021-11-13 18:44:54,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-13 18:44:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1918 transitions. [2021-11-13 18:44:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:44:54,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:54,767 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] [2021-11-13 18:44:54,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:44:54,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:54,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2021-11-13 18:44:54,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:54,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931051394] [2021-11-13 18:44:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:54,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:54,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:54,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931051394] [2021-11-13 18:44:54,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931051394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:54,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:54,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:44:54,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399018588] [2021-11-13 18:44:54,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:54,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:44:54,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:54,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:44:54,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:44:54,879 INFO L87 Difference]: Start difference. First operand 1384 states and 1918 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-13 18:44:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:55,292 INFO L93 Difference]: Finished difference Result 2979 states and 4184 transitions. [2021-11-13 18:44:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:44:55,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-11-13 18:44:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:55,303 INFO L225 Difference]: With dead ends: 2979 [2021-11-13 18:44:55,303 INFO L226 Difference]: Without dead ends: 1766 [2021-11-13 18:44:55,305 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 [2021-11-13 18:44:55,306 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 1529 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.07ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:55,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 371 Invalid, 244 Unknown, 0 Unchecked, 6.07ms Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 270.22ms Time] [2021-11-13 18:44:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2021-11-13 18:44:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1754. [2021-11-13 18:44:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1750 states have (on average 1.3982857142857144) internal successors, (2447), 1753 states have internal predecessors, (2447), 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) [2021-11-13 18:44:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2447 transitions. [2021-11-13 18:44:55,449 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2447 transitions. Word has length 51 [2021-11-13 18:44:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:55,449 INFO L470 AbstractCegarLoop]: Abstraction has 1754 states and 2447 transitions. [2021-11-13 18:44:55,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-13 18:44:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2447 transitions. [2021-11-13 18:44:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 18:44:55,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:55,453 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] [2021-11-13 18:44:55,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:44:55,453 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:55,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2021-11-13 18:44:55,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:55,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266097685] [2021-11-13 18:44:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:55,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:55,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:55,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266097685] [2021-11-13 18:44:55,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266097685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:55,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:55,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:44:55,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875568483] [2021-11-13 18:44:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:55,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:44:55,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:44:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:44:55,522 INFO L87 Difference]: Start difference. First operand 1754 states and 2447 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-13 18:44:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:55,962 INFO L93 Difference]: Finished difference Result 3899 states and 5482 transitions. [2021-11-13 18:44:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:44:55,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-11-13 18:44:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:55,976 INFO L225 Difference]: With dead ends: 3899 [2021-11-13 18:44:55,976 INFO L226 Difference]: Without dead ends: 2316 [2021-11-13 18:44:55,979 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 [2021-11-13 18:44:55,980 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1372 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:55,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1372 Valid, 340 Invalid, 248 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [31 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 243.23ms Time] [2021-11-13 18:44:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-11-13 18:44:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2300. [2021-11-13 18:44:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2296 states have (on average 1.3937282229965158) internal successors, (3200), 2299 states have internal predecessors, (3200), 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) [2021-11-13 18:44:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3200 transitions. [2021-11-13 18:44:56,168 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3200 transitions. Word has length 52 [2021-11-13 18:44:56,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:56,169 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 3200 transitions. [2021-11-13 18:44:56,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-13 18:44:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3200 transitions. [2021-11-13 18:44:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 18:44:56,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:56,173 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] [2021-11-13 18:44:56,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:44:56,173 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:56,174 INFO L85 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2021-11-13 18:44:56,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:56,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199268551] [2021-11-13 18:44:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:56,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:56,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:56,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199268551] [2021-11-13 18:44:56,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199268551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:56,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:56,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:44:56,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337505892] [2021-11-13 18:44:56,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:56,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:44:56,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:44:56,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:44:56,266 INFO L87 Difference]: Start difference. First operand 2300 states and 3200 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:57,234 INFO L93 Difference]: Finished difference Result 7352 states and 10455 transitions. [2021-11-13 18:44:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:44:57,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-13 18:44:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:57,271 INFO L225 Difference]: With dead ends: 7352 [2021-11-13 18:44:57,271 INFO L226 Difference]: Without dead ends: 6322 [2021-11-13 18:44:57,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:44:57,293 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2722 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 367.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.29ms SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 449.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:57,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2722 Valid, 604 Invalid, 566 Unknown, 0 Unchecked, 10.29ms Time], IncrementalHoareTripleChecker [168 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 449.89ms Time] [2021-11-13 18:44:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2021-11-13 18:44:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 2314. [2021-11-13 18:44:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2310 states have (on average 1.3930735930735931) internal successors, (3218), 2313 states have internal predecessors, (3218), 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) [2021-11-13 18:44:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3218 transitions. [2021-11-13 18:44:57,549 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3218 transitions. Word has length 53 [2021-11-13 18:44:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:57,550 INFO L470 AbstractCegarLoop]: Abstraction has 2314 states and 3218 transitions. [2021-11-13 18:44:57,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3218 transitions. [2021-11-13 18:44:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 18:44:57,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:57,553 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] [2021-11-13 18:44:57,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:44:57,554 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:57,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:57,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2021-11-13 18:44:57,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:57,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522023061] [2021-11-13 18:44:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:57,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:57,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:57,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522023061] [2021-11-13 18:44:57,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522023061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:57,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:57,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:44:57,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52592728] [2021-11-13 18:44:57,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:57,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:44:57,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:44:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:44:57,665 INFO L87 Difference]: Start difference. First operand 2314 states and 3218 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:59,087 INFO L93 Difference]: Finished difference Result 8112 states and 11565 transitions. [2021-11-13 18:44:59,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:44:59,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-13 18:44:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:59,132 INFO L225 Difference]: With dead ends: 8112 [2021-11-13 18:44:59,132 INFO L226 Difference]: Without dead ends: 7269 [2021-11-13 18:44:59,136 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 [2021-11-13 18:44:59,137 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 2035 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 502.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.44ms SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 665.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:59,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2035 Valid, 765 Invalid, 709 Unknown, 0 Unchecked, 11.44ms Time], IncrementalHoareTripleChecker [155 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 665.44ms Time] [2021-11-13 18:44:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2021-11-13 18:44:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 2336. [2021-11-13 18:44:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2332 states have (on average 1.3932246998284734) internal successors, (3249), 2335 states have internal predecessors, (3249), 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) [2021-11-13 18:44:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3249 transitions. [2021-11-13 18:44:59,465 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3249 transitions. Word has length 53 [2021-11-13 18:44:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:59,466 INFO L470 AbstractCegarLoop]: Abstraction has 2336 states and 3249 transitions. [2021-11-13 18:44:59,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3249 transitions. [2021-11-13 18:44:59,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-13 18:44:59,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:59,470 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] [2021-11-13 18:44:59,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:44:59,474 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:44:59,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:59,475 INFO L85 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2021-11-13 18:44:59,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:59,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238635223] [2021-11-13 18:44:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:59,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:59,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:59,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238635223] [2021-11-13 18:44:59,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238635223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:59,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:59,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:44:59,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884514121] [2021-11-13 18:44:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:59,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:44:59,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:44:59,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:44:59,589 INFO L87 Difference]: Start difference. First operand 2336 states and 3249 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:01,164 INFO L93 Difference]: Finished difference Result 9735 states and 13865 transitions. [2021-11-13 18:45:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:45:01,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-13 18:45:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:01,224 INFO L225 Difference]: With dead ends: 9735 [2021-11-13 18:45:01,224 INFO L226 Difference]: Without dead ends: 8767 [2021-11-13 18:45:01,228 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 [2021-11-13 18:45:01,231 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 3180 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.00ms SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 488.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:01,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3180 Valid, 658 Invalid, 618 Unknown, 0 Unchecked, 12.00ms Time], IncrementalHoareTripleChecker [172 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 488.74ms Time] [2021-11-13 18:45:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2021-11-13 18:45:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 2370. [2021-11-13 18:45:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2366 states have (on average 1.3918005071851225) internal successors, (3293), 2369 states have internal predecessors, (3293), 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) [2021-11-13 18:45:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3293 transitions. [2021-11-13 18:45:01,572 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3293 transitions. Word has length 53 [2021-11-13 18:45:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:01,573 INFO L470 AbstractCegarLoop]: Abstraction has 2370 states and 3293 transitions. [2021-11-13 18:45:01,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3293 transitions. [2021-11-13 18:45:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:45:01,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:01,576 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] [2021-11-13 18:45:01,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:45:01,577 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2021-11-13 18:45:01,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:01,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553637194] [2021-11-13 18:45:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:01,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:01,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:01,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553637194] [2021-11-13 18:45:01,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553637194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:01,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:01,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:45:01,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406669107] [2021-11-13 18:45:01,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:01,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:45:01,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:01,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:45:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:45:01,760 INFO L87 Difference]: Start difference. First operand 2370 states and 3293 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-11-13 18:45:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:02,937 INFO L93 Difference]: Finished difference Result 5779 states and 8214 transitions. [2021-11-13 18:45:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:45:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-11-13 18:45:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:02,950 INFO L225 Difference]: With dead ends: 5779 [2021-11-13 18:45:02,950 INFO L226 Difference]: Without dead ends: 4241 [2021-11-13 18:45:02,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:45:02,955 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 2449 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 446.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.03ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 549.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:02,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 946 Invalid, 700 Unknown, 0 Unchecked, 11.03ms Time], IncrementalHoareTripleChecker [34 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 549.56ms Time] [2021-11-13 18:45:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-11-13 18:45:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2280. [2021-11-13 18:45:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2276 states have (on average 1.390597539543058) internal successors, (3165), 2279 states have internal predecessors, (3165), 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) [2021-11-13 18:45:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3165 transitions. [2021-11-13 18:45:03,260 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3165 transitions. Word has length 54 [2021-11-13 18:45:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:03,261 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3165 transitions. [2021-11-13 18:45:03,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-11-13 18:45:03,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3165 transitions. [2021-11-13 18:45:03,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:45:03,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:03,264 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] [2021-11-13 18:45:03,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:45:03,265 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:03,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2021-11-13 18:45:03,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:03,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989667339] [2021-11-13 18:45:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:03,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:03,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:03,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989667339] [2021-11-13 18:45:03,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989667339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:03,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:03,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:45:03,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652626258] [2021-11-13 18:45:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:03,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:45:03,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:03,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:45:03,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:45:03,436 INFO L87 Difference]: Start difference. First operand 2280 states and 3165 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-11-13 18:45:05,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:05,095 INFO L93 Difference]: Finished difference Result 7077 states and 10098 transitions. [2021-11-13 18:45:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:45:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2021-11-13 18:45:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:05,110 INFO L225 Difference]: With dead ends: 7077 [2021-11-13 18:45:05,110 INFO L226 Difference]: Without dead ends: 5699 [2021-11-13 18:45:05,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:45:05,115 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 2142 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 653.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.76ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 808.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:05,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2142 Valid, 1563 Invalid, 1209 Unknown, 0 Unchecked, 10.76ms Time], IncrementalHoareTripleChecker [74 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 808.98ms Time] [2021-11-13 18:45:05,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2021-11-13 18:45:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 2251. [2021-11-13 18:45:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3902981753449044) internal successors, (3124), 2250 states have internal predecessors, (3124), 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) [2021-11-13 18:45:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3124 transitions. [2021-11-13 18:45:05,413 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3124 transitions. Word has length 54 [2021-11-13 18:45:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:05,414 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3124 transitions. [2021-11-13 18:45:05,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-11-13 18:45:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3124 transitions. [2021-11-13 18:45:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:45:05,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:05,417 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] [2021-11-13 18:45:05,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:45:05,417 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2021-11-13 18:45:05,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:05,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964879591] [2021-11-13 18:45:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:05,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:05,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:05,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964879591] [2021-11-13 18:45:05,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964879591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:05,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:05,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:45:05,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919824151] [2021-11-13 18:45:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:05,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:45:05,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:05,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:45:05,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:45:05,521 INFO L87 Difference]: Start difference. First operand 2251 states and 3124 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-11-13 18:45:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:06,882 INFO L93 Difference]: Finished difference Result 5391 states and 7658 transitions. [2021-11-13 18:45:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:45:06,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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 54 [2021-11-13 18:45:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:06,897 INFO L225 Difference]: With dead ends: 5391 [2021-11-13 18:45:06,897 INFO L226 Difference]: Without dead ends: 5386 [2021-11-13 18:45:06,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:45:06,901 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 1237 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 478.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.96ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 600.42ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:06,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 1233 Invalid, 923 Unknown, 0 Unchecked, 6.96ms Time], IncrementalHoareTripleChecker [39 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 600.42ms Time] [2021-11-13 18:45:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2021-11-13 18:45:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 2251. [2021-11-13 18:45:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3894080996884735) internal successors, (3122), 2250 states have internal predecessors, (3122), 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) [2021-11-13 18:45:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3122 transitions. [2021-11-13 18:45:07,215 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3122 transitions. Word has length 54 [2021-11-13 18:45:07,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:07,215 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3122 transitions. [2021-11-13 18:45:07,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 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) [2021-11-13 18:45:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3122 transitions. [2021-11-13 18:45:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:45:07,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:07,219 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] [2021-11-13 18:45:07,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:45:07,219 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2021-11-13 18:45:07,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:07,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676147007] [2021-11-13 18:45:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:07,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:07,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:07,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676147007] [2021-11-13 18:45:07,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676147007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:07,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:07,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:07,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712071464] [2021-11-13 18:45:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:07,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:07,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:07,275 INFO L87 Difference]: Start difference. First operand 2251 states and 3122 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-13 18:45:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:07,567 INFO L93 Difference]: Finished difference Result 3193 states and 4471 transitions. [2021-11-13 18:45:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-13 18:45:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:07,573 INFO L225 Difference]: With dead ends: 3193 [2021-11-13 18:45:07,573 INFO L226 Difference]: Without dead ends: 2258 [2021-11-13 18:45:07,575 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 [2021-11-13 18:45:07,576 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 224 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:07,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 798 Invalid, 31 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 33.66ms Time] [2021-11-13 18:45:07,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2021-11-13 18:45:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2251. [2021-11-13 18:45:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3760569648420116) internal successors, (3092), 2250 states have internal predecessors, (3092), 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) [2021-11-13 18:45:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3092 transitions. [2021-11-13 18:45:07,895 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3092 transitions. Word has length 55 [2021-11-13 18:45:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:07,895 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3092 transitions. [2021-11-13 18:45:07,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-13 18:45:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3092 transitions. [2021-11-13 18:45:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:45:07,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:07,899 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] [2021-11-13 18:45:07,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:45:07,899 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:07,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:07,900 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2021-11-13 18:45:07,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:07,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14208147] [2021-11-13 18:45:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:07,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:07,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:07,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14208147] [2021-11-13 18:45:07,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14208147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:07,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:07,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:07,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653454171] [2021-11-13 18:45:07,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:07,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:07,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:07,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:07,969 INFO L87 Difference]: Start difference. First operand 2251 states and 3092 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-13 18:45:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:08,397 INFO L93 Difference]: Finished difference Result 3252 states and 4507 transitions. [2021-11-13 18:45:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-13 18:45:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:08,403 INFO L225 Difference]: With dead ends: 3252 [2021-11-13 18:45:08,403 INFO L226 Difference]: Without dead ends: 2257 [2021-11-13 18:45:08,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:08,407 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 240 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:08,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 799 Invalid, 17 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 22.53ms Time] [2021-11-13 18:45:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-11-13 18:45:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2251. [2021-11-13 18:45:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2247 states have (on average 1.3635959056519804) internal successors, (3064), 2250 states have internal predecessors, (3064), 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) [2021-11-13 18:45:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3064 transitions. [2021-11-13 18:45:08,803 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3064 transitions. Word has length 55 [2021-11-13 18:45:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:08,803 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3064 transitions. [2021-11-13 18:45:08,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-13 18:45:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3064 transitions. [2021-11-13 18:45:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:45:08,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:08,808 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] [2021-11-13 18:45:08,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:45:08,808 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2021-11-13 18:45:08,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:08,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557092193] [2021-11-13 18:45:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:08,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:08,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:08,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557092193] [2021-11-13 18:45:08,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557092193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:08,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:08,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:08,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206876132] [2021-11-13 18:45:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:08,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:08,858 INFO L87 Difference]: Start difference. First operand 2251 states and 3064 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-13 18:45:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:09,167 INFO L93 Difference]: Finished difference Result 3332 states and 4570 transitions. [2021-11-13 18:45:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:09,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-13 18:45:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:09,173 INFO L225 Difference]: With dead ends: 3332 [2021-11-13 18:45:09,173 INFO L226 Difference]: Without dead ends: 2242 [2021-11-13 18:45:09,176 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 [2021-11-13 18:45:09,177 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 259 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:09,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 814 Invalid, 18 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 23.04ms Time] [2021-11-13 18:45:09,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2021-11-13 18:45:09,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2236. [2021-11-13 18:45:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2232 states have (on average 1.3440860215053763) internal successors, (3000), 2235 states have internal predecessors, (3000), 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) [2021-11-13 18:45:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3000 transitions. [2021-11-13 18:45:09,518 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3000 transitions. Word has length 55 [2021-11-13 18:45:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:09,519 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 3000 transitions. [2021-11-13 18:45:09,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-13 18:45:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3000 transitions. [2021-11-13 18:45:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:45:09,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:09,523 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] [2021-11-13 18:45:09,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:45:09,523 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2021-11-13 18:45:09,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:09,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934152126] [2021-11-13 18:45:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:09,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:09,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:09,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934152126] [2021-11-13 18:45:09,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934152126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:09,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:09,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:09,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901526313] [2021-11-13 18:45:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:09,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:09,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:09,563 INFO L87 Difference]: Start difference. First operand 2236 states and 3000 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-13 18:45:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:10,002 INFO L93 Difference]: Finished difference Result 3997 states and 5436 transitions. [2021-11-13 18:45:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:10,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-13 18:45:10,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:10,008 INFO L225 Difference]: With dead ends: 3997 [2021-11-13 18:45:10,008 INFO L226 Difference]: Without dead ends: 2740 [2021-11-13 18:45:10,011 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 [2021-11-13 18:45:10,012 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 348 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:10,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 540 Invalid, 54 Unknown, 0 Unchecked, 2.61ms Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 49.89ms Time] [2021-11-13 18:45:10,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-11-13 18:45:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2054. [2021-11-13 18:45:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2050 states have (on average 1.3482926829268294) internal successors, (2764), 2053 states have internal predecessors, (2764), 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) [2021-11-13 18:45:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2764 transitions. [2021-11-13 18:45:10,288 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2764 transitions. Word has length 56 [2021-11-13 18:45:10,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:10,288 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 2764 transitions. [2021-11-13 18:45:10,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-11-13 18:45:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2764 transitions. [2021-11-13 18:45:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:45:10,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:10,292 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] [2021-11-13 18:45:10,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:45:10,292 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2021-11-13 18:45:10,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:10,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053402453] [2021-11-13 18:45:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:10,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:10,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:10,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053402453] [2021-11-13 18:45:10,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053402453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:10,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:10,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:10,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771633874] [2021-11-13 18:45:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:10,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:10,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:10,331 INFO L87 Difference]: Start difference. First operand 2054 states and 2764 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:10,793 INFO L93 Difference]: Finished difference Result 3721 states and 5059 transitions. [2021-11-13 18:45:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:10,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 18:45:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:10,799 INFO L225 Difference]: With dead ends: 3721 [2021-11-13 18:45:10,799 INFO L226 Difference]: Without dead ends: 2477 [2021-11-13 18:45:10,802 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 [2021-11-13 18:45:10,803 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 300 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:10,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 458 Invalid, 70 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 66.59ms Time] [2021-11-13 18:45:10,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2021-11-13 18:45:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 1932. [2021-11-13 18:45:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1928 states have (on average 1.3526970954356847) internal successors, (2608), 1931 states have internal predecessors, (2608), 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) [2021-11-13 18:45:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2608 transitions. [2021-11-13 18:45:11,044 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2608 transitions. Word has length 57 [2021-11-13 18:45:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:11,044 INFO L470 AbstractCegarLoop]: Abstraction has 1932 states and 2608 transitions. [2021-11-13 18:45:11,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2608 transitions. [2021-11-13 18:45:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:45:11,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:11,047 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] [2021-11-13 18:45:11,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:45:11,049 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:11,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2021-11-13 18:45:11,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:11,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077507202] [2021-11-13 18:45:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:11,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:11,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:11,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077507202] [2021-11-13 18:45:11,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077507202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:11,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:11,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 18:45:11,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852617574] [2021-11-13 18:45:11,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:11,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:45:11,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:45:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:45:11,500 INFO L87 Difference]: Start difference. First operand 1932 states and 2608 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:13,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:13,170 INFO L93 Difference]: Finished difference Result 3983 states and 5456 transitions. [2021-11-13 18:45:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:45:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 18:45:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:13,177 INFO L225 Difference]: With dead ends: 3983 [2021-11-13 18:45:13,177 INFO L226 Difference]: Without dead ends: 3777 [2021-11-13 18:45:13,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:45:13,180 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 2564 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 512.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.05ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 616.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:13,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2564 Valid, 3210 Invalid, 767 Unknown, 0 Unchecked, 13.05ms Time], IncrementalHoareTripleChecker [62 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 616.69ms Time] [2021-11-13 18:45:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2021-11-13 18:45:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 1907. [2021-11-13 18:45:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1904 states have (on average 1.3539915966386555) internal successors, (2578), 1906 states have internal predecessors, (2578), 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) [2021-11-13 18:45:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2578 transitions. [2021-11-13 18:45:13,588 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2578 transitions. Word has length 57 [2021-11-13 18:45:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:13,588 INFO L470 AbstractCegarLoop]: Abstraction has 1907 states and 2578 transitions. [2021-11-13 18:45:13,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2578 transitions. [2021-11-13 18:45:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:45:13,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:13,593 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] [2021-11-13 18:45:13,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 18:45:13,593 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2021-11-13 18:45:13,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:13,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393306069] [2021-11-13 18:45:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:13,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:14,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:14,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393306069] [2021-11-13 18:45:14,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393306069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:14,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:14,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 18:45:14,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406947490] [2021-11-13 18:45:14,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:14,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:45:14,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:45:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:45:14,063 INFO L87 Difference]: Start difference. First operand 1907 states and 2578 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:15,986 INFO L93 Difference]: Finished difference Result 3147 states and 4298 transitions. [2021-11-13 18:45:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:45:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 18:45:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:15,992 INFO L225 Difference]: With dead ends: 3147 [2021-11-13 18:45:15,992 INFO L226 Difference]: Without dead ends: 3086 [2021-11-13 18:45:15,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:45:15,995 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 2055 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 510.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.74ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 654.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:15,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2055 Valid, 2761 Invalid, 743 Unknown, 0 Unchecked, 10.74ms Time], IncrementalHoareTripleChecker [51 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 654.64ms Time] [2021-11-13 18:45:15,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2021-11-13 18:45:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1895. [2021-11-13 18:45:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1893 states have (on average 1.3544638140517697) internal successors, (2564), 1894 states have internal predecessors, (2564), 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) [2021-11-13 18:45:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2564 transitions. [2021-11-13 18:45:16,297 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2564 transitions. Word has length 57 [2021-11-13 18:45:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:16,297 INFO L470 AbstractCegarLoop]: Abstraction has 1895 states and 2564 transitions. [2021-11-13 18:45:16,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2564 transitions. [2021-11-13 18:45:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:45:16,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:16,299 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] [2021-11-13 18:45:16,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 18:45:16,300 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2021-11-13 18:45:16,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:16,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343698696] [2021-11-13 18:45:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:16,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:16,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:16,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343698696] [2021-11-13 18:45:16,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343698696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:16,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:16,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:45:16,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498881747] [2021-11-13 18:45:16,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:16,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:45:16,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:16,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:45:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:45:16,602 INFO L87 Difference]: Start difference. First operand 1895 states and 2564 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:18,367 INFO L93 Difference]: Finished difference Result 4087 states and 5601 transitions. [2021-11-13 18:45:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:45:18,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 18:45:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:18,374 INFO L225 Difference]: With dead ends: 4087 [2021-11-13 18:45:18,374 INFO L226 Difference]: Without dead ends: 3873 [2021-11-13 18:45:18,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2021-11-13 18:45:18,377 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 2607 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 459.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.16ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 573.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:18,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 2683 Invalid, 669 Unknown, 0 Unchecked, 9.16ms Time], IncrementalHoareTripleChecker [45 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 573.68ms Time] [2021-11-13 18:45:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2021-11-13 18:45:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 1844. [2021-11-13 18:45:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 1.3575691806836678) internal successors, (2502), 1843 states have internal predecessors, (2502), 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) [2021-11-13 18:45:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2502 transitions. [2021-11-13 18:45:18,843 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2502 transitions. Word has length 57 [2021-11-13 18:45:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:18,844 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2502 transitions. [2021-11-13 18:45:18,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:45:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2502 transitions. [2021-11-13 18:45:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 18:45:18,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:18,848 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] [2021-11-13 18:45:18,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 18:45:18,848 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2021-11-13 18:45:18,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:18,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196503111] [2021-11-13 18:45:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:18,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:18,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:18,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196503111] [2021-11-13 18:45:18,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196503111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:18,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:18,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:45:18,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949184667] [2021-11-13 18:45:18,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:18,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:45:18,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:45:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:45:18,940 INFO L87 Difference]: Start difference. First operand 1844 states and 2502 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-13 18:45:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:19,491 INFO L93 Difference]: Finished difference Result 4234 states and 5899 transitions. [2021-11-13 18:45:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:45:19,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-13 18:45:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:19,495 INFO L225 Difference]: With dead ends: 4234 [2021-11-13 18:45:19,495 INFO L226 Difference]: Without dead ends: 3116 [2021-11-13 18:45:19,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:45:19,498 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 1071 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:19,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 636 Invalid, 51 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 44.47ms Time] [2021-11-13 18:45:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-11-13 18:45:20,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2748. [2021-11-13 18:45:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2747 states have (on average 1.358937022206043) internal successors, (3733), 2747 states have internal predecessors, (3733), 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) [2021-11-13 18:45:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3733 transitions. [2021-11-13 18:45:20,122 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3733 transitions. Word has length 66 [2021-11-13 18:45:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:20,122 INFO L470 AbstractCegarLoop]: Abstraction has 2748 states and 3733 transitions. [2021-11-13 18:45:20,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-13 18:45:20,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3733 transitions. [2021-11-13 18:45:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 18:45:20,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:20,128 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] [2021-11-13 18:45:20,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 18:45:20,128 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2021-11-13 18:45:20,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:20,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919379484] [2021-11-13 18:45:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:20,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:20,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:20,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919379484] [2021-11-13 18:45:20,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919379484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:20,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:20,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:45:20,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111751665] [2021-11-13 18:45:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:20,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:45:20,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:45:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:45:20,205 INFO L87 Difference]: Start difference. First operand 2748 states and 3733 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-13 18:45:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:20,652 INFO L93 Difference]: Finished difference Result 2754 states and 3736 transitions. [2021-11-13 18:45:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:45:20,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-13 18:45:20,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:20,658 INFO L225 Difference]: With dead ends: 2754 [2021-11-13 18:45:20,658 INFO L226 Difference]: Without dead ends: 2283 [2021-11-13 18:45:20,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:45:20,660 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 580 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:20,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 694 Invalid, 73 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 62.68ms Time] [2021-11-13 18:45:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-11-13 18:45:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2279. [2021-11-13 18:45:21,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.36215978928885) internal successors, (3103), 2278 states have internal predecessors, (3103), 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) [2021-11-13 18:45:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3103 transitions. [2021-11-13 18:45:21,085 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3103 transitions. Word has length 67 [2021-11-13 18:45:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:21,086 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 3103 transitions. [2021-11-13 18:45:21,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-11-13 18:45:21,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3103 transitions. [2021-11-13 18:45:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 18:45:21,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:21,090 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] [2021-11-13 18:45:21,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 18:45:21,091 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:21,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:21,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2021-11-13 18:45:21,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:21,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328839784] [2021-11-13 18:45:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:21,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:21,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:21,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328839784] [2021-11-13 18:45:21,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328839784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:21,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:21,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:21,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770660133] [2021-11-13 18:45:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:21,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:21,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:21,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:21,141 INFO L87 Difference]: Start difference. First operand 2279 states and 3103 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-13 18:45:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:21,947 INFO L93 Difference]: Finished difference Result 5375 states and 7427 transitions. [2021-11-13 18:45:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:21,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-13 18:45:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:21,953 INFO L225 Difference]: With dead ends: 5375 [2021-11-13 18:45:21,954 INFO L226 Difference]: Without dead ends: 3757 [2021-11-13 18:45:21,956 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 [2021-11-13 18:45:21,957 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:21,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 557 Invalid, 19 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 21.36ms Time] [2021-11-13 18:45:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-11-13 18:45:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3507. [2021-11-13 18:45:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3506 states have (on average 1.369937250427838) internal successors, (4803), 3506 states have internal predecessors, (4803), 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) [2021-11-13 18:45:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4803 transitions. [2021-11-13 18:45:22,572 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4803 transitions. Word has length 68 [2021-11-13 18:45:22,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:22,572 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 4803 transitions. [2021-11-13 18:45:22,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-13 18:45:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4803 transitions. [2021-11-13 18:45:22,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:45:22,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:22,576 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] [2021-11-13 18:45:22,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 18:45:22,577 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2021-11-13 18:45:22,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:22,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772339603] [2021-11-13 18:45:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:22,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:22,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:22,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772339603] [2021-11-13 18:45:22,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772339603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:22,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:22,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:22,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664795766] [2021-11-13 18:45:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:22,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:22,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:22,624 INFO L87 Difference]: Start difference. First operand 3507 states and 4803 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-13 18:45:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:23,914 INFO L93 Difference]: Finished difference Result 8767 states and 12085 transitions. [2021-11-13 18:45:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:23,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-13 18:45:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:23,921 INFO L225 Difference]: With dead ends: 8767 [2021-11-13 18:45:23,921 INFO L226 Difference]: Without dead ends: 5783 [2021-11-13 18:45:23,925 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 [2021-11-13 18:45:23,926 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 118 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:23,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 553 Invalid, 18 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 51.87ms Time] [2021-11-13 18:45:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2021-11-13 18:45:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5365. [2021-11-13 18:45:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5364 states have (on average 1.360738255033557) internal successors, (7299), 5364 states have internal predecessors, (7299), 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) [2021-11-13 18:45:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7299 transitions. [2021-11-13 18:45:24,956 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7299 transitions. Word has length 70 [2021-11-13 18:45:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:24,957 INFO L470 AbstractCegarLoop]: Abstraction has 5365 states and 7299 transitions. [2021-11-13 18:45:24,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-13 18:45:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7299 transitions. [2021-11-13 18:45:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:45:24,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:24,960 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] [2021-11-13 18:45:24,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 18:45:24,961 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:24,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2021-11-13 18:45:24,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:24,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240681570] [2021-11-13 18:45:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:24,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:25,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:25,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240681570] [2021-11-13 18:45:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240681570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:25,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:25,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:25,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625673158] [2021-11-13 18:45:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:25,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:25,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:25,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:25,015 INFO L87 Difference]: Start difference. First operand 5365 states and 7299 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-13 18:45:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:27,054 INFO L93 Difference]: Finished difference Result 14489 states and 19829 transitions. [2021-11-13 18:45:27,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:27,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-13 18:45:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:27,066 INFO L225 Difference]: With dead ends: 14489 [2021-11-13 18:45:27,066 INFO L226 Difference]: Without dead ends: 9647 [2021-11-13 18:45:27,070 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 [2021-11-13 18:45:27,071 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 97 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.57ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:27,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 528 Invalid, 28 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 35.57ms Time] [2021-11-13 18:45:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2021-11-13 18:45:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 8813. [2021-11-13 18:45:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8813 states, 8812 states have (on average 1.3571266454834316) internal successors, (11959), 8812 states have internal predecessors, (11959), 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) [2021-11-13 18:45:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8813 states to 8813 states and 11959 transitions. [2021-11-13 18:45:28,919 INFO L78 Accepts]: Start accepts. Automaton has 8813 states and 11959 transitions. Word has length 70 [2021-11-13 18:45:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:28,919 INFO L470 AbstractCegarLoop]: Abstraction has 8813 states and 11959 transitions. [2021-11-13 18:45:28,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-13 18:45:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 8813 states and 11959 transitions. [2021-11-13 18:45:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 18:45:28,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:28,921 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] [2021-11-13 18:45:28,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 18:45:28,921 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2021-11-13 18:45:28,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:28,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964277843] [2021-11-13 18:45:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:28,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:28,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:28,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964277843] [2021-11-13 18:45:28,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964277843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:28,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:28,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:45:28,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406416525] [2021-11-13 18:45:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:28,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:45:28,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:28,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:45:28,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:45:28,991 INFO L87 Difference]: Start difference. First operand 8813 states and 11959 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2021-11-13 18:45:33,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:33,113 INFO L93 Difference]: Finished difference Result 18941 states and 25281 transitions. [2021-11-13 18:45:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:45:33,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 72 [2021-11-13 18:45:33,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:33,136 INFO L225 Difference]: With dead ends: 18941 [2021-11-13 18:45:33,136 INFO L226 Difference]: Without dead ends: 18939 [2021-11-13 18:45:33,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:45:33,141 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 344 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:33,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1309 Invalid, 52 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 38.31ms Time] [2021-11-13 18:45:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18939 states. [2021-11-13 18:45:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18939 to 9725. [2021-11-13 18:45:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9725 states, 9724 states have (on average 1.3236322501028384) internal successors, (12871), 9724 states have internal predecessors, (12871), 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) [2021-11-13 18:45:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9725 states to 9725 states and 12871 transitions. [2021-11-13 18:45:35,712 INFO L78 Accepts]: Start accepts. Automaton has 9725 states and 12871 transitions. Word has length 72 [2021-11-13 18:45:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:35,713 INFO L470 AbstractCegarLoop]: Abstraction has 9725 states and 12871 transitions. [2021-11-13 18:45:35,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2021-11-13 18:45:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 9725 states and 12871 transitions. [2021-11-13 18:45:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 18:45:35,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:35,715 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] [2021-11-13 18:45:35,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-13 18:45:35,716 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2021-11-13 18:45:35,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:35,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187733630] [2021-11-13 18:45:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:35,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:35,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:35,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187733630] [2021-11-13 18:45:35,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187733630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:35,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:35,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:45:35,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319166764] [2021-11-13 18:45:35,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:35,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:45:35,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:35,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:45:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:45:35,765 INFO L87 Difference]: Start difference. First operand 9725 states and 12871 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-13 18:45:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:39,099 INFO L93 Difference]: Finished difference Result 23589 states and 31277 transitions. [2021-11-13 18:45:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:45:39,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-13 18:45:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:39,117 INFO L225 Difference]: With dead ends: 23589 [2021-11-13 18:45:39,118 INFO L226 Difference]: Without dead ends: 14387 [2021-11-13 18:45:39,127 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 [2021-11-13 18:45:39,127 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 193 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:39,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 377 Invalid, 25 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 30.71ms Time] [2021-11-13 18:45:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14387 states. [2021-11-13 18:45:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14387 to 14233. [2021-11-13 18:45:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14233 states, 14232 states have (on average 1.303752107925801) internal successors, (18555), 14232 states have internal predecessors, (18555), 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) [2021-11-13 18:45:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14233 states to 14233 states and 18555 transitions. [2021-11-13 18:45:42,805 INFO L78 Accepts]: Start accepts. Automaton has 14233 states and 18555 transitions. Word has length 73 [2021-11-13 18:45:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:42,806 INFO L470 AbstractCegarLoop]: Abstraction has 14233 states and 18555 transitions. [2021-11-13 18:45:42,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-11-13 18:45:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 14233 states and 18555 transitions. [2021-11-13 18:45:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-13 18:45:42,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:42,808 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] [2021-11-13 18:45:42,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 18:45:42,808 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2021-11-13 18:45:42,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:42,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191067192] [2021-11-13 18:45:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:42,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:45:42,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:42,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191067192] [2021-11-13 18:45:42,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191067192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:42,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:42,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:45:42,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998255181] [2021-11-13 18:45:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:42,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:45:42,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:45:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:45:42,890 INFO L87 Difference]: Start difference. First operand 14233 states and 18555 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-13 18:45:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:45:46,696 INFO L93 Difference]: Finished difference Result 20743 states and 27195 transitions. [2021-11-13 18:45:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:45:46,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2021-11-13 18:45:46,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:45:46,717 INFO L225 Difference]: With dead ends: 20743 [2021-11-13 18:45:46,717 INFO L226 Difference]: Without dead ends: 17267 [2021-11-13 18:45:46,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:45:46,723 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 637 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.73ms IncrementalHoareTripleChecker+Time [2021-11-13 18:45:46,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 803 Invalid, 66 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 48.73ms Time] [2021-11-13 18:45:46,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17267 states. [2021-11-13 18:45:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17267 to 16091. [2021-11-13 18:45:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16091 states, 16090 states have (on average 1.2998756991920448) internal successors, (20915), 16090 states have internal predecessors, (20915), 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) [2021-11-13 18:45:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16091 states to 16091 states and 20915 transitions. [2021-11-13 18:45:50,296 INFO L78 Accepts]: Start accepts. Automaton has 16091 states and 20915 transitions. Word has length 74 [2021-11-13 18:45:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:45:50,296 INFO L470 AbstractCegarLoop]: Abstraction has 16091 states and 20915 transitions. [2021-11-13 18:45:50,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-13 18:45:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16091 states and 20915 transitions. [2021-11-13 18:45:50,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 18:45:50,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:45:50,302 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:45:50,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 18:45:50,303 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:45:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:45:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1899335398, now seen corresponding path program 1 times [2021-11-13 18:45:50,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:45:50,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145335385] [2021-11-13 18:45:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:45:50,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:45:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:45:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 18:45:50,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:45:50,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145335385] [2021-11-13 18:45:50,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145335385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:45:50,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:45:50,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:45:50,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131977048] [2021-11-13 18:45:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:45:50,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:45:50,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:45:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:45:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:45:50,418 INFO L87 Difference]: Start difference. First operand 16091 states and 20915 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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) [2021-11-13 18:46:02,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:02,874 INFO L93 Difference]: Finished difference Result 58864 states and 76348 transitions. [2021-11-13 18:46:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:46:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 92 [2021-11-13 18:46:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:02,961 INFO L225 Difference]: With dead ends: 58864 [2021-11-13 18:46:02,961 INFO L226 Difference]: Without dead ends: 51000 [2021-11-13 18:46:02,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:46:02,979 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 1458 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 513.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.93ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 629.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:02,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 1341 Invalid, 954 Unknown, 0 Unchecked, 6.93ms Time], IncrementalHoareTripleChecker [55 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 629.65ms Time] [2021-11-13 18:46:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51000 states. [2021-11-13 18:46:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51000 to 16033. [2021-11-13 18:46:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16033 states, 16032 states have (on average 1.3002120758483033) internal successors, (20845), 16032 states have internal predecessors, (20845), 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) [2021-11-13 18:46:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16033 states to 16033 states and 20845 transitions. [2021-11-13 18:46:07,204 INFO L78 Accepts]: Start accepts. Automaton has 16033 states and 20845 transitions. Word has length 92 [2021-11-13 18:46:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:07,204 INFO L470 AbstractCegarLoop]: Abstraction has 16033 states and 20845 transitions. [2021-11-13 18:46:07,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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) [2021-11-13 18:46:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16033 states and 20845 transitions. [2021-11-13 18:46:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-13 18:46:07,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:07,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:07,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-13 18:46:07,213 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:46:07,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1332578409, now seen corresponding path program 1 times [2021-11-13 18:46:07,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:07,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780959183] [2021-11-13 18:46:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:07,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 18:46:07,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:07,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780959183] [2021-11-13 18:46:07,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780959183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:07,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:07,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:46:07,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368865111] [2021-11-13 18:46:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:07,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:46:07,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:46:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:46:07,346 INFO L87 Difference]: Start difference. First operand 16033 states and 20845 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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) [2021-11-13 18:46:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:15,693 INFO L93 Difference]: Finished difference Result 40121 states and 52033 transitions. [2021-11-13 18:46:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:46:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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 92 [2021-11-13 18:46:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:15,741 INFO L225 Difference]: With dead ends: 40121 [2021-11-13 18:46:15,741 INFO L226 Difference]: Without dead ends: 32439 [2021-11-13 18:46:15,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:46:15,755 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1730 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 324.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.46ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 403.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:15,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 948 Invalid, 725 Unknown, 0 Unchecked, 5.46ms Time], IncrementalHoareTripleChecker [46 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 403.01ms Time] [2021-11-13 18:46:15,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32439 states. [2021-11-13 18:46:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32439 to 15999. [2021-11-13 18:46:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15999 states, 15998 states have (on average 1.3002875359419928) internal successors, (20802), 15998 states have internal predecessors, (20802), 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) [2021-11-13 18:46:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15999 states to 15999 states and 20802 transitions. [2021-11-13 18:46:20,010 INFO L78 Accepts]: Start accepts. Automaton has 15999 states and 20802 transitions. Word has length 92 [2021-11-13 18:46:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:20,010 INFO L470 AbstractCegarLoop]: Abstraction has 15999 states and 20802 transitions. [2021-11-13 18:46:20,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 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) [2021-11-13 18:46:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 15999 states and 20802 transitions. [2021-11-13 18:46:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:46:20,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:20,017 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:20,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 18:46:20,018 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 18:46:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1785022088, now seen corresponding path program 1 times [2021-11-13 18:46:20,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:20,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246088698] [2021-11-13 18:46:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:20,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:20,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:20,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246088698] [2021-11-13 18:46:20,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246088698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:46:20,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271577009] [2021-11-13 18:46:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:20,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:20,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:46:20,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:46:20,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50e4882d-bb3c-44cf-b527-1cb13bf8c5d5/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:46:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:20,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:46:20,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:22,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:24,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271577009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:46:24,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:46:24,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2021-11-13 18:46:24,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904797085] [2021-11-13 18:46:24,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:46:24,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-13 18:46:24,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:24,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-13 18:46:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-11-13 18:46:24,159 INFO L87 Difference]: Start difference. First operand 15999 states and 20802 transitions. Second operand has 30 states, 30 states have (on average 8.133333333333333) internal successors, (244), 29 states have internal predecessors, (244), 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)