./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0 --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 16f1bfcdafcb30da29b0067c09066abcd5ae81f862f6e318335df039804ff932 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:01:46,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:01:46,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:01:46,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:01:46,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:01:46,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:01:46,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:01:46,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:01:46,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:01:46,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:01:46,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:01:46,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:01:46,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:01:46,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:01:46,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:01:46,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:01:46,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:01:46,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:01:46,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:01:46,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:01:46,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:01:46,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:01:46,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:01:46,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:01:46,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:01:46,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:01:46,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:01:46,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:01:46,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:01:46,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:01:46,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:01:46,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:01:46,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:01:46,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:01:46,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:01:46,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:01:46,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:01:46,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:01:46,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:01:46,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:01:46,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:01:46,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:01:46,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:01:46,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:01:46,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:01:46,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:01:46,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:01:46,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:01:46,276 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:01:46,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:01:46,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:01:46,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:01:46,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:01:46,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:01:46,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:01:46,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:01:46,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:01:46,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:01:46,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:01:46,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:01:46,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:01:46,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:01:46,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:01:46,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:01:46,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:01:46,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:01:46,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:01:46,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:01:46,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:01:46,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:01:46,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:01:46,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:01:46,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:01:46,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:01:46,283 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_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f1bfcdafcb30da29b0067c09066abcd5ae81f862f6e318335df039804ff932 [2021-11-22 15:01:46,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:01:46,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:01:46,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:01:46,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:01:46,731 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:01:46,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-22 15:01:46,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/data/c4cde7a43/62adb22a2fa140bfbc440f3d75670e51/FLAG45ee3e759 [2021-11-22 15:01:47,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:01:47,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-22 15:01:47,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/data/c4cde7a43/62adb22a2fa140bfbc440f3d75670e51/FLAG45ee3e759 [2021-11-22 15:01:47,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/data/c4cde7a43/62adb22a2fa140bfbc440f3d75670e51 [2021-11-22 15:01:47,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:01:47,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:01:47,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:01:47,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:01:47,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:01:47,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:01:47" (1/1) ... [2021-11-22 15:01:47,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee803d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:47, skipping insertion in model container [2021-11-22 15:01:47,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:01:47" (1/1) ... [2021-11-22 15:01:48,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:01:48,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:01:48,466 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2021-11-22 15:01:48,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2021-11-22 15:01:48,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2021-11-22 15:01:48,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2021-11-22 15:01:48,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:01:48,808 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:01:48,912 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2021-11-22 15:01:49,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2021-11-22 15:01:49,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2021-11-22 15:01:49,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2021-11-22 15:01:49,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:01:49,459 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:01:49,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49 WrapperNode [2021-11-22 15:01:49,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:01:49,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:01:49,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:01:49,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:01:49,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,657 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2377 [2021-11-22 15:01:49,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:01:49,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:01:49,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:01:49,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:01:49,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:01:49,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:01:49,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:01:49,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:01:49,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (1/1) ... [2021-11-22 15:01:49,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:01:49,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:01:49,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:01:49,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:01:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:01:49,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:01:49,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:01:49,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:01:50,239 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:01:50,241 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:01:52,206 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:01:52,234 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:01:52,234 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:01:52,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:01:52 BoogieIcfgContainer [2021-11-22 15:01:52,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:01:52,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:01:52,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:01:52,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:01:52,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:01:47" (1/3) ... [2021-11-22 15:01:52,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff08bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:01:52, skipping insertion in model container [2021-11-22 15:01:52,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:01:49" (2/3) ... [2021-11-22 15:01:52,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff08bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:01:52, skipping insertion in model container [2021-11-22 15:01:52,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:01:52" (3/3) ... [2021-11-22 15:01:52,262 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-22 15:01:52,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:01:52,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-22 15:01:52,367 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:01:52,382 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 [2021-11-22 15:01:52,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-22 15:01:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 436 states have (on average 1.8577981651376148) internal successors, (810), 440 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 15:01:52,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:52,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:52,447 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)] === [2021-11-22 15:01:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1113444986, now seen corresponding path program 1 times [2021-11-22 15:01:52,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:52,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132203447] [2021-11-22 15:01:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:52,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:53,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:53,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132203447] [2021-11-22 15:01:53,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132203447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:53,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:53,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:01:53,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920333124] [2021-11-22 15:01:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:53,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:01:53,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:01:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:01:53,171 INFO L87 Difference]: Start difference. First operand has 441 states, 436 states have (on average 1.8577981651376148) internal successors, (810), 440 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:53,406 INFO L93 Difference]: Finished difference Result 689 states and 1213 transitions. [2021-11-22 15:01:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:01:53,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-22 15:01:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:53,433 INFO L225 Difference]: With dead ends: 689 [2021-11-22 15:01:53,433 INFO L226 Difference]: Without dead ends: 545 [2021-11-22 15:01:53,438 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 [2021-11-22 15:01:53,443 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 422 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:53,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1356 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-22 15:01:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2021-11-22 15:01:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 535 states have (on average 1.3420560747663552) internal successors, (718), 538 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 718 transitions. [2021-11-22 15:01:53,588 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 718 transitions. Word has length 49 [2021-11-22 15:01:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:53,589 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 718 transitions. [2021-11-22 15:01:53,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:53,592 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 718 transitions. [2021-11-22 15:01:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 15:01:53,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:53,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:53,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:01:53,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:01:53,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash 969247668, now seen corresponding path program 1 times [2021-11-22 15:01:53,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:53,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673629282] [2021-11-22 15:01:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:53,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:53,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:53,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673629282] [2021-11-22 15:01:53,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673629282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:53,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:53,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:01:53,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633562261] [2021-11-22 15:01:53,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:53,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:01:53,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:01:53,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:01:53,821 INFO L87 Difference]: Start difference. First operand 539 states and 718 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:53,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:53,944 INFO L93 Difference]: Finished difference Result 954 states and 1328 transitions. [2021-11-22 15:01:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:01:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-22 15:01:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:53,951 INFO L225 Difference]: With dead ends: 954 [2021-11-22 15:01:53,952 INFO L226 Difference]: Without dead ends: 713 [2021-11-22 15:01:53,954 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 [2021-11-22 15:01:53,957 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 238 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:53,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 1022 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:01:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-22 15:01:53,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 707. [2021-11-22 15:01:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 703 states have (on average 1.3655761024182076) internal successors, (960), 706 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 960 transitions. [2021-11-22 15:01:54,004 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 960 transitions. Word has length 49 [2021-11-22 15:01:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:54,005 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 960 transitions. [2021-11-22 15:01:54,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 960 transitions. [2021-11-22 15:01:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 15:01:54,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:54,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:54,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:01:54,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:01:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash 533282259, now seen corresponding path program 1 times [2021-11-22 15:01:54,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:54,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510463833] [2021-11-22 15:01:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:54,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:54,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510463833] [2021-11-22 15:01:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510463833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:54,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:54,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:01:54,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060605477] [2021-11-22 15:01:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:54,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:01:54,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:01:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:01:54,198 INFO L87 Difference]: Start difference. First operand 707 states and 960 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:54,373 INFO L93 Difference]: Finished difference Result 1363 states and 1911 transitions. [2021-11-22 15:01:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:01:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-22 15:01:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:54,383 INFO L225 Difference]: With dead ends: 1363 [2021-11-22 15:01:54,383 INFO L226 Difference]: Without dead ends: 1034 [2021-11-22 15:01:54,389 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 [2021-11-22 15:01:54,395 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 299 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:54,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 997 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:01:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-11-22 15:01:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1027. [2021-11-22 15:01:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1023 states have (on average 1.380254154447703) internal successors, (1412), 1026 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1412 transitions. [2021-11-22 15:01:54,471 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1412 transitions. Word has length 49 [2021-11-22 15:01:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:54,474 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1412 transitions. [2021-11-22 15:01:54,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1412 transitions. [2021-11-22 15:01:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 15:01:54,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:54,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:01:54,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:01:54,481 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)] === [2021-11-22 15:01:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash 388998377, now seen corresponding path program 1 times [2021-11-22 15:01:54,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:54,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062571241] [2021-11-22 15:01:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:54,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:54,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:54,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062571241] [2021-11-22 15:01:54,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062571241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:54,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:54,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:01:54,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372840470] [2021-11-22 15:01:54,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:54,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:01:54,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:54,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:01:54,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:54,584 INFO L87 Difference]: Start difference. First operand 1027 states and 1412 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:55,164 INFO L93 Difference]: Finished difference Result 2116 states and 2959 transitions. [2021-11-22 15:01:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:55,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-22 15:01:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:55,178 INFO L225 Difference]: With dead ends: 2116 [2021-11-22 15:01:55,178 INFO L226 Difference]: Without dead ends: 1254 [2021-11-22 15:01:55,183 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 [2021-11-22 15:01:55,193 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1692 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:55,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 403 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:01:55,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-22 15:01:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1244. [2021-11-22 15:01:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1240 states have (on average 1.3935483870967742) internal successors, (1728), 1243 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1728 transitions. [2021-11-22 15:01:55,294 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1728 transitions. Word has length 49 [2021-11-22 15:01:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:55,295 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1728 transitions. [2021-11-22 15:01:55,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1728 transitions. [2021-11-22 15:01:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 15:01:55,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:55,300 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] [2021-11-22 15:01:55,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:01:55,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:01:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1582595724, now seen corresponding path program 1 times [2021-11-22 15:01:55,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:55,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503068460] [2021-11-22 15:01:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:55,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:55,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:55,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503068460] [2021-11-22 15:01:55,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503068460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:55,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:55,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:01:55,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117734387] [2021-11-22 15:01:55,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:55,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:01:55,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:55,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:01:55,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:55,466 INFO L87 Difference]: Start difference. First operand 1244 states and 1728 transitions. 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) [2021-11-22 15:01:55,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:55,983 INFO L93 Difference]: Finished difference Result 2642 states and 3721 transitions. [2021-11-22 15:01:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:55,984 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 [2021-11-22 15:01:55,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:55,997 INFO L225 Difference]: With dead ends: 2642 [2021-11-22 15:01:55,997 INFO L226 Difference]: Without dead ends: 1578 [2021-11-22 15:01:56,000 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 [2021-11-22 15:01:56,001 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1444 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:56,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 346 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:01:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-11-22 15:01:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1176. [2021-11-22 15:01:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1172 states have (on average 1.3933447098976108) internal successors, (1633), 1175 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1633 transitions. [2021-11-22 15:01:56,136 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1633 transitions. Word has length 50 [2021-11-22 15:01:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:56,137 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1633 transitions. [2021-11-22 15:01:56,137 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) [2021-11-22 15:01:56,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1633 transitions. [2021-11-22 15:01:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 15:01:56,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:56,142 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] [2021-11-22 15:01:56,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:01:56,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:01:56,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1245141101, now seen corresponding path program 1 times [2021-11-22 15:01:56,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:56,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625466793] [2021-11-22 15:01:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:56,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:56,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:56,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625466793] [2021-11-22 15:01:56,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625466793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:56,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:56,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:01:56,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311931142] [2021-11-22 15:01:56,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:56,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:01:56,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:01:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:01:56,269 INFO L87 Difference]: Start difference. First operand 1176 states and 1633 transitions. 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) [2021-11-22 15:01:56,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:56,744 INFO L93 Difference]: Finished difference Result 2591 states and 3626 transitions. [2021-11-22 15:01:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:01:56,745 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 [2021-11-22 15:01:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:56,760 INFO L225 Difference]: With dead ends: 2591 [2021-11-22 15:01:56,760 INFO L226 Difference]: Without dead ends: 1533 [2021-11-22 15:01:56,763 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 [2021-11-22 15:01:56,764 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1278 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:56,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 320 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:01:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-11-22 15:01:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1520. [2021-11-22 15:01:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1516 states have (on average 1.3885224274406331) internal successors, (2105), 1519 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2105 transitions. [2021-11-22 15:01:56,922 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2105 transitions. Word has length 50 [2021-11-22 15:01:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:56,922 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 2105 transitions. [2021-11-22 15:01:56,923 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) [2021-11-22 15:01:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2105 transitions. [2021-11-22 15:01:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 15:01:56,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:56,926 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] [2021-11-22 15:01:56,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:01:56,927 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:01:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2025988922, now seen corresponding path program 1 times [2021-11-22 15:01:56,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:56,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006862925] [2021-11-22 15:01:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:56,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:57,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:57,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006862925] [2021-11-22 15:01:57,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006862925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:57,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:57,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:01:57,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538754514] [2021-11-22 15:01:57,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:57,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:01:57,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:01:57,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:01:57,068 INFO L87 Difference]: Start difference. First operand 1520 states and 2105 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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) [2021-11-22 15:01:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:01:58,227 INFO L93 Difference]: Finished difference Result 4981 states and 7069 transitions. [2021-11-22 15:01:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:01:58,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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 [2021-11-22 15:01:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:01:58,260 INFO L225 Difference]: With dead ends: 4981 [2021-11-22 15:01:58,261 INFO L226 Difference]: Without dead ends: 4548 [2021-11-22 15:01:58,263 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 [2021-11-22 15:01:58,265 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 3000 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:01:58,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3000 Valid, 633 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:01:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-11-22 15:01:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 1532. [2021-11-22 15:01:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1528 states have (on average 1.388089005235602) internal successors, (2121), 1531 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2121 transitions. [2021-11-22 15:01:58,496 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2121 transitions. Word has length 51 [2021-11-22 15:01:58,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:01:58,496 INFO L470 AbstractCegarLoop]: Abstraction has 1532 states and 2121 transitions. [2021-11-22 15:01:58,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 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) [2021-11-22 15:01:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2121 transitions. [2021-11-22 15:01:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 15:01:58,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:01:58,500 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] [2021-11-22 15:01:58,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:01:58,500 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)] === [2021-11-22 15:01:58,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:01:58,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1769009660, now seen corresponding path program 1 times [2021-11-22 15:01:58,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:01:58,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705034669] [2021-11-22 15:01:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:01:58,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:01:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:01:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:01:58,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:01:58,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705034669] [2021-11-22 15:01:58,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705034669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:01:58,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:01:58,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:01:58,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074758677] [2021-11-22 15:01:58,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:01:58,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:01:58,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:01:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:01:58,663 INFO L87 Difference]: Start difference. First operand 1532 states and 2121 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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) [2021-11-22 15:02:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:00,064 INFO L93 Difference]: Finished difference Result 5316 states and 7567 transitions. [2021-11-22 15:02:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:02:00,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 [2021-11-22 15:02:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:00,099 INFO L225 Difference]: With dead ends: 5316 [2021-11-22 15:02:00,100 INFO L226 Difference]: Without dead ends: 4768 [2021-11-22 15:02:00,103 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 [2021-11-22 15:02:00,105 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1905 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:00,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 726 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:02:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2021-11-22 15:02:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 1554. [2021-11-22 15:02:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1550 states have (on average 1.3883870967741936) internal successors, (2152), 1553 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2152 transitions. [2021-11-22 15:02:00,405 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2152 transitions. Word has length 52 [2021-11-22 15:02:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:00,407 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 2152 transitions. [2021-11-22 15:02:00,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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) [2021-11-22 15:02:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2152 transitions. [2021-11-22 15:02:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 15:02:00,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:00,411 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] [2021-11-22 15:02:00,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:02:00,412 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash -990817093, now seen corresponding path program 1 times [2021-11-22 15:02:00,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:00,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939815268] [2021-11-22 15:02:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:00,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:00,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:00,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939815268] [2021-11-22 15:02:00,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939815268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:00,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:00,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:02:00,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570239883] [2021-11-22 15:02:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:00,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:02:00,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:02:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:02:00,541 INFO L87 Difference]: Start difference. First operand 1554 states and 2152 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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) [2021-11-22 15:02:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:01,789 INFO L93 Difference]: Finished difference Result 4979 states and 7033 transitions. [2021-11-22 15:02:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:02:01,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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 [2021-11-22 15:02:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:01,824 INFO L225 Difference]: With dead ends: 4979 [2021-11-22 15:02:01,824 INFO L226 Difference]: Without dead ends: 4264 [2021-11-22 15:02:01,828 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 [2021-11-22 15:02:01,833 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 2523 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:01,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 591 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:02:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-11-22 15:02:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 1568. [2021-11-22 15:02:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1564 states have (on average 1.3874680306905371) internal successors, (2170), 1567 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2170 transitions. [2021-11-22 15:02:02,216 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2170 transitions. Word has length 52 [2021-11-22 15:02:02,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:02,217 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 2170 transitions. [2021-11-22 15:02:02,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 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) [2021-11-22 15:02:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2170 transitions. [2021-11-22 15:02:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 15:02:02,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:02,220 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] [2021-11-22 15:02:02,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:02:02,221 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)] === [2021-11-22 15:02:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash 851488073, now seen corresponding path program 1 times [2021-11-22 15:02:02,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:02,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310759987] [2021-11-22 15:02:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:02,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:02,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:02,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310759987] [2021-11-22 15:02:02,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310759987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:02,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:02,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 15:02:02,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40734612] [2021-11-22 15:02:02,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:02,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:02:02,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:02,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:02:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:02:02,465 INFO L87 Difference]: Start difference. First operand 1568 states and 2170 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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) [2021-11-22 15:02:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:03,938 INFO L93 Difference]: Finished difference Result 4020 states and 5671 transitions. [2021-11-22 15:02:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:02:03,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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 [2021-11-22 15:02:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:03,961 INFO L225 Difference]: With dead ends: 4020 [2021-11-22 15:02:03,962 INFO L226 Difference]: Without dead ends: 2970 [2021-11-22 15:02:03,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:02:03,966 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 2262 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:03,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2262 Valid, 882 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:02:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2021-11-22 15:02:04,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1568. [2021-11-22 15:02:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1564 states have (on average 1.3842710997442456) internal successors, (2165), 1567 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2165 transitions. [2021-11-22 15:02:04,286 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2165 transitions. Word has length 53 [2021-11-22 15:02:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:04,286 INFO L470 AbstractCegarLoop]: Abstraction has 1568 states and 2165 transitions. [2021-11-22 15:02:04,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 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) [2021-11-22 15:02:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2165 transitions. [2021-11-22 15:02:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 15:02:04,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:04,290 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] [2021-11-22 15:02:04,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:02:04,291 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)] === [2021-11-22 15:02:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 707290755, now seen corresponding path program 1 times [2021-11-22 15:02:04,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:04,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210156022] [2021-11-22 15:02:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:04,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:04,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:04,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210156022] [2021-11-22 15:02:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210156022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:04,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:04,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:02:04,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129095988] [2021-11-22 15:02:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:04,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:02:04,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:02:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:02:04,494 INFO L87 Difference]: Start difference. First operand 1568 states and 2165 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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) [2021-11-22 15:02:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:06,342 INFO L93 Difference]: Finished difference Result 5269 states and 7539 transitions. [2021-11-22 15:02:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:02:06,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 [2021-11-22 15:02:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:06,376 INFO L225 Difference]: With dead ends: 5269 [2021-11-22 15:02:06,376 INFO L226 Difference]: Without dead ends: 4353 [2021-11-22 15:02:06,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:02:06,381 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 1989 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:06,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 1519 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 15:02:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-11-22 15:02:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 1539. [2021-11-22 15:02:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1535 states have (on average 1.3837133550488598) internal successors, (2124), 1538 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2124 transitions. [2021-11-22 15:02:06,670 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2124 transitions. Word has length 53 [2021-11-22 15:02:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:06,670 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 2124 transitions. [2021-11-22 15:02:06,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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) [2021-11-22 15:02:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2124 transitions. [2021-11-22 15:02:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 15:02:06,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:06,674 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] [2021-11-22 15:02:06,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:02:06,674 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)] === [2021-11-22 15:02:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -843330776, now seen corresponding path program 1 times [2021-11-22 15:02:06,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:06,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752212789] [2021-11-22 15:02:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:06,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:06,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:06,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752212789] [2021-11-22 15:02:06,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752212789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:06,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:06,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:02:06,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727221607] [2021-11-22 15:02:06,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:06,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:02:06,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:02:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:02:06,836 INFO L87 Difference]: Start difference. First operand 1539 states and 2124 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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) [2021-11-22 15:02:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:08,386 INFO L93 Difference]: Finished difference Result 3567 states and 5046 transitions. [2021-11-22 15:02:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:02:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 [2021-11-22 15:02:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:08,400 INFO L225 Difference]: With dead ends: 3567 [2021-11-22 15:02:08,401 INFO L226 Difference]: Without dead ends: 3562 [2021-11-22 15:02:08,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:02:08,403 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 2162 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:08,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 1174 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:02:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-11-22 15:02:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 1539. [2021-11-22 15:02:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1535 states have (on average 1.3824104234527688) internal successors, (2122), 1538 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2122 transitions. [2021-11-22 15:02:08,699 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2122 transitions. Word has length 53 [2021-11-22 15:02:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:08,699 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 2122 transitions. [2021-11-22 15:02:08,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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) [2021-11-22 15:02:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2122 transitions. [2021-11-22 15:02:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 15:02:08,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:08,710 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] [2021-11-22 15:02:08,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:02:08,710 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash 686286721, now seen corresponding path program 1 times [2021-11-22 15:02:08,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:08,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106443199] [2021-11-22 15:02:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:08,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:08,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:08,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106443199] [2021-11-22 15:02:08,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106443199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:08,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:08,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:08,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710275126] [2021-11-22 15:02:08,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:08,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:08,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:08,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:08,770 INFO L87 Difference]: Start difference. First operand 1539 states and 2122 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-11-22 15:02:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:09,105 INFO L93 Difference]: Finished difference Result 2067 states and 2850 transitions. [2021-11-22 15:02:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 [2021-11-22 15:02:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:09,110 INFO L225 Difference]: With dead ends: 2067 [2021-11-22 15:02:09,110 INFO L226 Difference]: Without dead ends: 1508 [2021-11-22 15:02:09,111 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 [2021-11-22 15:02:09,113 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 259 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:09,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 676 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-11-22 15:02:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1506. [2021-11-22 15:02:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1502 states have (on average 1.3535286284953396) internal successors, (2033), 1505 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2033 transitions. [2021-11-22 15:02:09,388 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2033 transitions. Word has length 54 [2021-11-22 15:02:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:09,389 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2033 transitions. [2021-11-22 15:02:09,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-11-22 15:02:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2033 transitions. [2021-11-22 15:02:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 15:02:09,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:09,393 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] [2021-11-22 15:02:09,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:02:09,393 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:09,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:09,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1437497679, now seen corresponding path program 1 times [2021-11-22 15:02:09,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:09,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802062490] [2021-11-22 15:02:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:09,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:09,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:09,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802062490] [2021-11-22 15:02:09,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802062490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:09,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:09,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:09,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199098337] [2021-11-22 15:02:09,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:09,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:09,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:09,476 INFO L87 Difference]: Start difference. First operand 1506 states and 2033 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-11-22 15:02:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:09,793 INFO L93 Difference]: Finished difference Result 2126 states and 2896 transitions. [2021-11-22 15:02:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:09,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 [2021-11-22 15:02:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:09,798 INFO L225 Difference]: With dead ends: 2126 [2021-11-22 15:02:09,799 INFO L226 Difference]: Without dead ends: 1513 [2021-11-22 15:02:09,801 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 [2021-11-22 15:02:09,802 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 208 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:09,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 746 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-11-22 15:02:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1506. [2021-11-22 15:02:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1502 states have (on average 1.3382157123834886) internal successors, (2010), 1505 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2010 transitions. [2021-11-22 15:02:10,041 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2010 transitions. Word has length 54 [2021-11-22 15:02:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:10,042 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2010 transitions. [2021-11-22 15:02:10,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-11-22 15:02:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2010 transitions. [2021-11-22 15:02:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 15:02:10,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:10,045 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] [2021-11-22 15:02:10,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:02:10,046 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:10,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1063900683, now seen corresponding path program 1 times [2021-11-22 15:02:10,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:10,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423007928] [2021-11-22 15:02:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:10,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:10,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:10,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423007928] [2021-11-22 15:02:10,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423007928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:10,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:10,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:10,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500359071] [2021-11-22 15:02:10,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:10,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:10,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:10,101 INFO L87 Difference]: Start difference. First operand 1506 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-11-22 15:02:10,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:10,345 INFO L93 Difference]: Finished difference Result 2163 states and 2914 transitions. [2021-11-22 15:02:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:10,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 [2021-11-22 15:02:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:10,348 INFO L225 Difference]: With dead ends: 2163 [2021-11-22 15:02:10,348 INFO L226 Difference]: Without dead ends: 1512 [2021-11-22 15:02:10,350 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 [2021-11-22 15:02:10,351 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 224 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:10,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 753 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-22 15:02:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1506. [2021-11-22 15:02:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1502 states have (on average 1.3262316910785619) internal successors, (1992), 1505 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1992 transitions. [2021-11-22 15:02:10,557 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1992 transitions. Word has length 54 [2021-11-22 15:02:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:10,558 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 1992 transitions. [2021-11-22 15:02:10,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-11-22 15:02:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1992 transitions. [2021-11-22 15:02:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:02:10,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:10,561 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] [2021-11-22 15:02:10,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:02:10,562 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1050867566, now seen corresponding path program 1 times [2021-11-22 15:02:10,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:10,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887398536] [2021-11-22 15:02:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:10,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:10,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887398536] [2021-11-22 15:02:10,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887398536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:10,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:10,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:10,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493652585] [2021-11-22 15:02:10,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:10,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:10,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:10,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:10,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:10,608 INFO L87 Difference]: Start difference. First operand 1506 states and 1992 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) [2021-11-22 15:02:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:10,960 INFO L93 Difference]: Finished difference Result 2664 states and 3567 transitions. [2021-11-22 15:02:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:10,960 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 [2021-11-22 15:02:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:10,963 INFO L225 Difference]: With dead ends: 2664 [2021-11-22 15:02:10,963 INFO L226 Difference]: Without dead ends: 1794 [2021-11-22 15:02:10,965 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 [2021-11-22 15:02:10,965 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 286 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:10,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 467 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:02:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2021-11-22 15:02:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1426. [2021-11-22 15:02:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1422 states have (on average 1.3284106891701828) internal successors, (1889), 1425 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1889 transitions. [2021-11-22 15:02:11,171 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1889 transitions. Word has length 56 [2021-11-22 15:02:11,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:11,172 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 1889 transitions. [2021-11-22 15:02:11,172 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) [2021-11-22 15:02:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1889 transitions. [2021-11-22 15:02:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:02:11,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:11,176 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] [2021-11-22 15:02:11,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:02:11,176 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)] === [2021-11-22 15:02:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash 762441294, now seen corresponding path program 1 times [2021-11-22 15:02:11,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:11,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952969989] [2021-11-22 15:02:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:11,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:11,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952969989] [2021-11-22 15:02:11,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952969989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:11,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:11,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:11,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203834688] [2021-11-22 15:02:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:11,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:11,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:11,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:11,229 INFO L87 Difference]: Start difference. First operand 1426 states and 1889 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) [2021-11-22 15:02:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:11,640 INFO L93 Difference]: Finished difference Result 2528 states and 3386 transitions. [2021-11-22 15:02:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:11,641 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 [2021-11-22 15:02:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:11,646 INFO L225 Difference]: With dead ends: 2528 [2021-11-22 15:02:11,646 INFO L226 Difference]: Without dead ends: 1704 [2021-11-22 15:02:11,648 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 [2021-11-22 15:02:11,649 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 250 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:11,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 397 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:02:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-11-22 15:02:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1328. [2021-11-22 15:02:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1324 states have (on average 1.3330815709969788) internal successors, (1765), 1327 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1765 transitions. [2021-11-22 15:02:11,949 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1765 transitions. Word has length 56 [2021-11-22 15:02:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:11,950 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1765 transitions. [2021-11-22 15:02:11,950 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) [2021-11-22 15:02:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1765 transitions. [2021-11-22 15:02:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:02:11,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:11,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:11,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:02:11,954 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)] === [2021-11-22 15:02:11,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1334330377, now seen corresponding path program 1 times [2021-11-22 15:02:11,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:11,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412652941] [2021-11-22 15:02:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:11,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:12,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:12,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412652941] [2021-11-22 15:02:12,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412652941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:12,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:12,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 15:02:12,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702650251] [2021-11-22 15:02:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:12,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 15:02:12,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 15:02:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-22 15:02:12,727 INFO L87 Difference]: Start difference. First operand 1328 states and 1765 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-22 15:02:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:16,091 INFO L93 Difference]: Finished difference Result 2921 states and 3942 transitions. [2021-11-22 15:02:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 15:02:16,093 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 [2021-11-22 15:02:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:16,099 INFO L225 Difference]: With dead ends: 2921 [2021-11-22 15:02:16,099 INFO L226 Difference]: Without dead ends: 2917 [2021-11-22 15:02:16,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2021-11-22 15:02:16,103 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 2973 mSDsluCounter, 4124 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:16,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 4553 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-22 15:02:16,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2021-11-22 15:02:16,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1340. [2021-11-22 15:02:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1336 states have (on average 1.3338323353293413) internal successors, (1782), 1339 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1782 transitions. [2021-11-22 15:02:16,466 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1782 transitions. Word has length 56 [2021-11-22 15:02:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:16,466 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1782 transitions. [2021-11-22 15:02:16,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-22 15:02:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1782 transitions. [2021-11-22 15:02:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:02:16,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:16,474 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] [2021-11-22 15:02:16,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:02:16,475 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)] === [2021-11-22 15:02:16,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2094820174, now seen corresponding path program 1 times [2021-11-22 15:02:16,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:16,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092022324] [2021-11-22 15:02:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:16,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:17,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:17,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092022324] [2021-11-22 15:02:17,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092022324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:17,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:17,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 15:02:17,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921550844] [2021-11-22 15:02:17,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:17,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 15:02:17,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 15:02:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-11-22 15:02:17,194 INFO L87 Difference]: Start difference. First operand 1340 states and 1782 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-22 15:02:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:20,656 INFO L93 Difference]: Finished difference Result 2977 states and 4024 transitions. [2021-11-22 15:02:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-22 15:02:20,657 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 [2021-11-22 15:02:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:20,664 INFO L225 Difference]: With dead ends: 2977 [2021-11-22 15:02:20,664 INFO L226 Difference]: Without dead ends: 2971 [2021-11-22 15:02:20,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2021-11-22 15:02:20,667 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 2690 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:20,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2690 Valid, 4222 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-22 15:02:20,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-11-22 15:02:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1340. [2021-11-22 15:02:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1336 states have (on average 1.3330838323353293) internal successors, (1781), 1339 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1781 transitions. [2021-11-22 15:02:21,020 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1781 transitions. Word has length 56 [2021-11-22 15:02:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:21,021 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1781 transitions. [2021-11-22 15:02:21,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-22 15:02:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1781 transitions. [2021-11-22 15:02:21,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:02:21,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:21,024 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] [2021-11-22 15:02:21,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:02:21,024 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1561708229, now seen corresponding path program 1 times [2021-11-22 15:02:21,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:21,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772919112] [2021-11-22 15:02:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:21,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:21,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:21,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772919112] [2021-11-22 15:02:21,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772919112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:21,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:21,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:02:21,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223495183] [2021-11-22 15:02:21,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:21,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:02:21,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:21,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:02:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:02:21,501 INFO L87 Difference]: Start difference. First operand 1340 states and 1781 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2021-11-22 15:02:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:23,112 INFO L93 Difference]: Finished difference Result 2622 states and 3551 transitions. [2021-11-22 15:02:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:02:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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 [2021-11-22 15:02:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:23,119 INFO L225 Difference]: With dead ends: 2622 [2021-11-22 15:02:23,119 INFO L226 Difference]: Without dead ends: 2561 [2021-11-22 15:02:23,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-22 15:02:23,121 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 2008 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:23,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 2063 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:02:23,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-11-22 15:02:23,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 1328. [2021-11-22 15:02:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1325 states have (on average 1.3343396226415094) internal successors, (1768), 1327 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1768 transitions. [2021-11-22 15:02:23,468 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1768 transitions. Word has length 56 [2021-11-22 15:02:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:23,468 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1768 transitions. [2021-11-22 15:02:23,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2021-11-22 15:02:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1768 transitions. [2021-11-22 15:02:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:02:23,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:23,472 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] [2021-11-22 15:02:23,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:02:23,472 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1558288919, now seen corresponding path program 1 times [2021-11-22 15:02:23,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:23,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150332239] [2021-11-22 15:02:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:23,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:24,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150332239] [2021-11-22 15:02:24,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150332239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:24,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:24,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-22 15:02:24,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224101920] [2021-11-22 15:02:24,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:24,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-22 15:02:24,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:24,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 15:02:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-22 15:02:24,104 INFO L87 Difference]: Start difference. First operand 1328 states and 1768 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-22 15:02:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:27,296 INFO L93 Difference]: Finished difference Result 2996 states and 4054 transitions. [2021-11-22 15:02:27,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 15:02:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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 [2021-11-22 15:02:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:27,304 INFO L225 Difference]: With dead ends: 2996 [2021-11-22 15:02:27,304 INFO L226 Difference]: Without dead ends: 2992 [2021-11-22 15:02:27,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 15:02:27,307 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 2671 mSDsluCounter, 4285 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 4698 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:27,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2671 Valid, 4698 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-22 15:02:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2021-11-22 15:02:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1335. [2021-11-22 15:02:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1332 states have (on average 1.3340840840840842) internal successors, (1777), 1334 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1777 transitions. [2021-11-22 15:02:27,700 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1777 transitions. Word has length 56 [2021-11-22 15:02:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:27,700 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1777 transitions. [2021-11-22 15:02:27,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 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) [2021-11-22 15:02:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1777 transitions. [2021-11-22 15:02:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 15:02:27,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:27,704 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] [2021-11-22 15:02:27,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:02:27,704 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:27,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2012833268, now seen corresponding path program 1 times [2021-11-22 15:02:27,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:27,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873334740] [2021-11-22 15:02:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:27,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:28,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:28,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873334740] [2021-11-22 15:02:28,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873334740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:28,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:28,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 15:02:28,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318289276] [2021-11-22 15:02:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:28,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:02:28,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:02:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:02:28,259 INFO L87 Difference]: Start difference. First operand 1335 states and 1777 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 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) [2021-11-22 15:02:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:31,224 INFO L93 Difference]: Finished difference Result 3781 states and 5158 transitions. [2021-11-22 15:02:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 15:02:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 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 [2021-11-22 15:02:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:31,233 INFO L225 Difference]: With dead ends: 3781 [2021-11-22 15:02:31,233 INFO L226 Difference]: Without dead ends: 3777 [2021-11-22 15:02:31,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:02:31,236 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 3022 mSDsluCounter, 3619 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3022 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:31,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3022 Valid, 4175 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 15:02:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2021-11-22 15:02:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 1324. [2021-11-22 15:02:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1322 states have (on average 1.334341906202723) internal successors, (1764), 1323 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1764 transitions. [2021-11-22 15:02:31,529 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1764 transitions. Word has length 57 [2021-11-22 15:02:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:31,530 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 1764 transitions. [2021-11-22 15:02:31,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 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) [2021-11-22 15:02:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1764 transitions. [2021-11-22 15:02:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 15:02:31,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:31,534 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] [2021-11-22 15:02:31,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:02:31,534 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:02:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash 988215367, now seen corresponding path program 1 times [2021-11-22 15:02:31,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:31,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467643421] [2021-11-22 15:02:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:31,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:31,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:31,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467643421] [2021-11-22 15:02:31,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467643421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:31,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:31,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 15:02:31,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238381360] [2021-11-22 15:02:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:31,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:02:31,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:02:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:02:31,925 INFO L87 Difference]: Start difference. First operand 1324 states and 1764 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) [2021-11-22 15:02:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:33,657 INFO L93 Difference]: Finished difference Result 3254 states and 4433 transitions. [2021-11-22 15:02:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:02:33,658 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 [2021-11-22 15:02:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:33,661 INFO L225 Difference]: With dead ends: 3254 [2021-11-22 15:02:33,661 INFO L226 Difference]: Without dead ends: 3043 [2021-11-22 15:02:33,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-22 15:02:33,663 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 1815 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:33,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1815 Valid, 2696 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:02:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-11-22 15:02:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1287. [2021-11-22 15:02:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1286 states have (on average 1.3351477449455678) internal successors, (1717), 1286 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1717 transitions. [2021-11-22 15:02:33,936 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1717 transitions. Word has length 57 [2021-11-22 15:02:33,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:33,936 INFO L470 AbstractCegarLoop]: Abstraction has 1287 states and 1717 transitions. [2021-11-22 15:02:33,936 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) [2021-11-22 15:02:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1717 transitions. [2021-11-22 15:02:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 15:02:33,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:33,939 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] [2021-11-22 15:02:33,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:02:33,939 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)] === [2021-11-22 15:02:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1173720509, now seen corresponding path program 1 times [2021-11-22 15:02:33,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:33,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144843674] [2021-11-22 15:02:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:33,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:34,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:34,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144843674] [2021-11-22 15:02:34,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144843674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:34,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:34,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:02:34,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876076795] [2021-11-22 15:02:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:34,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:02:34,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:02:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:34,007 INFO L87 Difference]: Start difference. First operand 1287 states and 1717 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:34,685 INFO L93 Difference]: Finished difference Result 2993 states and 4127 transitions. [2021-11-22 15:02:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:02:34,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-22 15:02:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:34,688 INFO L225 Difference]: With dead ends: 2993 [2021-11-22 15:02:34,688 INFO L226 Difference]: Without dead ends: 2283 [2021-11-22 15:02:34,689 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 [2021-11-22 15:02:34,690 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 881 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:34,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 694 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:02:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-11-22 15:02:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 1937. [2021-11-22 15:02:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 1.3424586776859504) internal successors, (2599), 1936 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2599 transitions. [2021-11-22 15:02:35,141 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2599 transitions. Word has length 63 [2021-11-22 15:02:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:35,141 INFO L470 AbstractCegarLoop]: Abstraction has 1937 states and 2599 transitions. [2021-11-22 15:02:35,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2599 transitions. [2021-11-22 15:02:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:02:35,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:35,145 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] [2021-11-22 15:02:35,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:02:35,145 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)] === [2021-11-22 15:02:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 5757662, now seen corresponding path program 1 times [2021-11-22 15:02:35,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551349876] [2021-11-22 15:02:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:35,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:35,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:35,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551349876] [2021-11-22 15:02:35,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551349876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:35,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:35,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:02:35,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548720187] [2021-11-22 15:02:35,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:35,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:02:35,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:02:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:35,221 INFO L87 Difference]: Start difference. First operand 1937 states and 2599 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:35,810 INFO L93 Difference]: Finished difference Result 1943 states and 2602 transitions. [2021-11-22 15:02:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:02:35,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-22 15:02:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:35,813 INFO L225 Difference]: With dead ends: 1943 [2021-11-22 15:02:35,813 INFO L226 Difference]: Without dead ends: 1732 [2021-11-22 15:02:35,814 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 [2021-11-22 15:02:35,816 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 536 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:35,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 603 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:02:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2021-11-22 15:02:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1728. [2021-11-22 15:02:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.3462651997683845) internal successors, (2325), 1727 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2325 transitions. [2021-11-22 15:02:36,249 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2325 transitions. Word has length 64 [2021-11-22 15:02:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:36,250 INFO L470 AbstractCegarLoop]: Abstraction has 1728 states and 2325 transitions. [2021-11-22 15:02:36,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2325 transitions. [2021-11-22 15:02:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 15:02:36,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:36,254 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] [2021-11-22 15:02:36,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:02:36,255 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)] === [2021-11-22 15:02:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1852933729, now seen corresponding path program 1 times [2021-11-22 15:02:36,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:36,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825168703] [2021-11-22 15:02:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:36,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:36,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825168703] [2021-11-22 15:02:36,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825168703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:36,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:36,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:36,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870096713] [2021-11-22 15:02:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:36,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:36,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:36,315 INFO L87 Difference]: Start difference. First operand 1728 states and 2325 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:37,198 INFO L93 Difference]: Finished difference Result 3920 states and 5371 transitions. [2021-11-22 15:02:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:37,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-22 15:02:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:37,201 INFO L225 Difference]: With dead ends: 3920 [2021-11-22 15:02:37,201 INFO L226 Difference]: Without dead ends: 2774 [2021-11-22 15:02:37,204 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 [2021-11-22 15:02:37,204 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 121 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:37,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 495 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-11-22 15:02:37,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2620. [2021-11-22 15:02:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2619 states have (on average 1.3573883161512028) internal successors, (3555), 2619 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3555 transitions. [2021-11-22 15:02:37,916 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3555 transitions. Word has length 65 [2021-11-22 15:02:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:37,917 INFO L470 AbstractCegarLoop]: Abstraction has 2620 states and 3555 transitions. [2021-11-22 15:02:37,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3555 transitions. [2021-11-22 15:02:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 15:02:37,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:37,921 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] [2021-11-22 15:02:37,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:02:37,921 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)] === [2021-11-22 15:02:37,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1984326042, now seen corresponding path program 1 times [2021-11-22 15:02:37,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:37,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489534358] [2021-11-22 15:02:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:37,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:37,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:37,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489534358] [2021-11-22 15:02:37,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489534358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:37,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:37,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:37,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574703748] [2021-11-22 15:02:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:37,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:37,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:37,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:37,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:37,977 INFO L87 Difference]: Start difference. First operand 2620 states and 3555 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2021-11-22 15:02:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:39,290 INFO L93 Difference]: Finished difference Result 6496 states and 8909 transitions. [2021-11-22 15:02:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:39,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 [2021-11-22 15:02:39,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:39,296 INFO L225 Difference]: With dead ends: 6496 [2021-11-22 15:02:39,296 INFO L226 Difference]: Without dead ends: 4458 [2021-11-22 15:02:39,300 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 [2021-11-22 15:02:39,301 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 99 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:39,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 491 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2021-11-22 15:02:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 4152. [2021-11-22 15:02:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4152 states, 4151 states have (on average 1.360395085521561) internal successors, (5647), 4151 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 5647 transitions. [2021-11-22 15:02:40,521 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 5647 transitions. Word has length 67 [2021-11-22 15:02:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:40,522 INFO L470 AbstractCegarLoop]: Abstraction has 4152 states and 5647 transitions. [2021-11-22 15:02:40,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2021-11-22 15:02:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 5647 transitions. [2021-11-22 15:02:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 15:02:40,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:40,526 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] [2021-11-22 15:02:40,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:02:40,526 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)] === [2021-11-22 15:02:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash -456053566, now seen corresponding path program 1 times [2021-11-22 15:02:40,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:40,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975016832] [2021-11-22 15:02:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:40,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:40,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:40,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975016832] [2021-11-22 15:02:40,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975016832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:40,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:40,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:02:40,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316405905] [2021-11-22 15:02:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:40,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:02:40,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:02:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:02:40,611 INFO L87 Difference]: Start difference. First operand 4152 states and 5647 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:43,600 INFO L93 Difference]: Finished difference Result 8712 states and 11675 transitions. [2021-11-22 15:02:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:02:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-22 15:02:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:43,612 INFO L225 Difference]: With dead ends: 8712 [2021-11-22 15:02:43,612 INFO L226 Difference]: Without dead ends: 8710 [2021-11-22 15:02:43,614 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 [2021-11-22 15:02:43,615 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 343 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:43,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1233 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8710 states. [2021-11-22 15:02:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8710 to 4488. [2021-11-22 15:02:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 1.3334076220191664) internal successors, (5983), 4487 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 5983 transitions. [2021-11-22 15:02:45,080 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 5983 transitions. Word has length 69 [2021-11-22 15:02:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:45,081 INFO L470 AbstractCegarLoop]: Abstraction has 4488 states and 5983 transitions. [2021-11-22 15:02:45,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 5983 transitions. [2021-11-22 15:02:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-22 15:02:45,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:45,085 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] [2021-11-22 15:02:45,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:02:45,085 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)] === [2021-11-22 15:02:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 789084021, now seen corresponding path program 1 times [2021-11-22 15:02:45,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:45,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299848461] [2021-11-22 15:02:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:45,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:45,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:45,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299848461] [2021-11-22 15:02:45,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299848461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:45,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:45,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:45,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008622134] [2021-11-22 15:02:45,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:45,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:45,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:45,142 INFO L87 Difference]: Start difference. First operand 4488 states and 5983 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) [2021-11-22 15:02:47,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:47,961 INFO L93 Difference]: Finished difference Result 11482 states and 15355 transitions. [2021-11-22 15:02:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:47,962 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 [2021-11-22 15:02:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:47,972 INFO L225 Difference]: With dead ends: 11482 [2021-11-22 15:02:47,972 INFO L226 Difference]: Without dead ends: 7466 [2021-11-22 15:02:47,977 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 [2021-11-22 15:02:47,978 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 151 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:47,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 388 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2021-11-22 15:02:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 7352. [2021-11-22 15:02:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 7351 states have (on average 1.3041763025438715) internal successors, (9587), 7351 states have internal predecessors, (9587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 9587 transitions. [2021-11-22 15:02:50,398 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 9587 transitions. Word has length 70 [2021-11-22 15:02:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:50,398 INFO L470 AbstractCegarLoop]: Abstraction has 7352 states and 9587 transitions. [2021-11-22 15:02:50,398 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) [2021-11-22 15:02:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 9587 transitions. [2021-11-22 15:02:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 15:02:50,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:50,402 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] [2021-11-22 15:02:50,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:02:50,403 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)] === [2021-11-22 15:02:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2099371189, now seen corresponding path program 1 times [2021-11-22 15:02:50,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:50,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227088290] [2021-11-22 15:02:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:50,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:50,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:50,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227088290] [2021-11-22 15:02:50,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227088290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:50,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:50,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:02:50,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452165604] [2021-11-22 15:02:50,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:50,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:02:50,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:02:50,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:02:50,462 INFO L87 Difference]: Start difference. First operand 7352 states and 9587 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:54,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:54,734 INFO L93 Difference]: Finished difference Result 18116 states and 23629 transitions. [2021-11-22 15:02:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:02:54,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-22 15:02:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:02:54,756 INFO L225 Difference]: With dead ends: 18116 [2021-11-22 15:02:54,756 INFO L226 Difference]: Without dead ends: 11216 [2021-11-22 15:02:54,765 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 [2021-11-22 15:02:54,766 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 123 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:02:54,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 480 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:02:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11216 states. [2021-11-22 15:02:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11216 to 10190. [2021-11-22 15:02:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10190 states, 10189 states have (on average 1.2916871135538326) internal successors, (13161), 10189 states have internal predecessors, (13161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 13161 transitions. [2021-11-22 15:02:58,292 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 13161 transitions. Word has length 71 [2021-11-22 15:02:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:02:58,292 INFO L470 AbstractCegarLoop]: Abstraction has 10190 states and 13161 transitions. [2021-11-22 15:02:58,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 13161 transitions. [2021-11-22 15:02:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 15:02:58,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:02:58,296 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] [2021-11-22 15:02:58,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:02:58,297 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)] === [2021-11-22 15:02:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:58,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1535774186, now seen corresponding path program 1 times [2021-11-22 15:02:58,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:58,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5128556] [2021-11-22 15:02:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:58,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:02:58,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5128556] [2021-11-22 15:02:58,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5128556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:02:58,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:02:58,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:02:58,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920902537] [2021-11-22 15:02:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:02:58,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:02:58,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:02:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:02:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:02:58,382 INFO L87 Difference]: Start difference. First operand 10190 states and 13161 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:03,786 INFO L93 Difference]: Finished difference Result 15066 states and 19591 transitions. [2021-11-22 15:03:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:03:03,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-22 15:03:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:03,809 INFO L225 Difference]: With dead ends: 15066 [2021-11-22 15:03:03,809 INFO L226 Difference]: Without dead ends: 12844 [2021-11-22 15:03:03,815 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 [2021-11-22 15:03:03,816 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 522 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:03,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 824 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:03:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12844 states. [2021-11-22 15:03:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12844 to 11668. [2021-11-22 15:03:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11668 states, 11667 states have (on average 1.2890203137053227) internal successors, (15039), 11667 states have internal predecessors, (15039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11668 states to 11668 states and 15039 transitions. [2021-11-22 15:03:07,845 INFO L78 Accepts]: Start accepts. Automaton has 11668 states and 15039 transitions. Word has length 71 [2021-11-22 15:03:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:07,846 INFO L470 AbstractCegarLoop]: Abstraction has 11668 states and 15039 transitions. [2021-11-22 15:03:07,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 11668 states and 15039 transitions. [2021-11-22 15:03:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-22 15:03:07,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:07,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:03:07,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:03:07,850 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:03:07,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1231319734, now seen corresponding path program 1 times [2021-11-22 15:03:07,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:03:07,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837804969] [2021-11-22 15:03:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:07,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:03:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:07,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:03:07,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837804969] [2021-11-22 15:03:07,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837804969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:03:07,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:03:07,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:03:07,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930808309] [2021-11-22 15:03:07,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:03:07,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:03:07,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:03:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:03:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:03:07,927 INFO L87 Difference]: Start difference. First operand 11668 states and 15039 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:13,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:13,376 INFO L93 Difference]: Finished difference Result 17292 states and 22459 transitions. [2021-11-22 15:03:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:03:13,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-22 15:03:13,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:13,396 INFO L225 Difference]: With dead ends: 17292 [2021-11-22 15:03:13,396 INFO L226 Difference]: Without dead ends: 13906 [2021-11-22 15:03:13,403 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 [2021-11-22 15:03:13,404 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 579 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:13,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 715 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:03:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13906 states. [2021-11-22 15:03:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13906 to 13496. [2021-11-22 15:03:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13496 states, 13495 states have (on average 1.2854390515005558) internal successors, (17347), 13495 states have internal predecessors, (17347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13496 states to 13496 states and 17347 transitions. [2021-11-22 15:03:18,582 INFO L78 Accepts]: Start accepts. Automaton has 13496 states and 17347 transitions. Word has length 76 [2021-11-22 15:03:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:18,583 INFO L470 AbstractCegarLoop]: Abstraction has 13496 states and 17347 transitions. [2021-11-22 15:03:18,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 13496 states and 17347 transitions. [2021-11-22 15:03:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 15:03:18,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:18,588 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:03:18,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:03:18,588 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:03:18,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:18,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1072943688, now seen corresponding path program 1 times [2021-11-22 15:03:18,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:03:18,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523896585] [2021-11-22 15:03:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:18,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:03:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:18,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:03:18,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523896585] [2021-11-22 15:03:18,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523896585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:03:18,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53130717] [2021-11-22 15:03:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:18,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:03:18,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:03:18,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:03:18,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:03:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:18,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:03:18,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:03:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:19,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:03:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:19,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53130717] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:03:19,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:03:19,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2021-11-22 15:03:19,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221121427] [2021-11-22 15:03:19,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:03:19,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:03:19,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:03:19,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:03:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:03:19,993 INFO L87 Difference]: Start difference. First operand 13496 states and 17347 transitions. Second operand has 14 states, 14 states have (on average 16.714285714285715) internal successors, (234), 14 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:28,008 INFO L93 Difference]: Finished difference Result 31275 states and 40113 transitions. [2021-11-22 15:03:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:03:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.714285714285715) internal successors, (234), 14 states have internal predecessors, (234), 0 states have call successors, (0), 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 88 [2021-11-22 15:03:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:28,038 INFO L225 Difference]: With dead ends: 31275 [2021-11-22 15:03:28,038 INFO L226 Difference]: Without dead ends: 18205 [2021-11-22 15:03:28,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:03:28,054 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 2658 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:28,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2658 Valid, 756 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:03:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18205 states. [2021-11-22 15:03:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18205 to 12972. [2021-11-22 15:03:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2550304525479916) internal successors, (16279), 12971 states have internal predecessors, (16279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16279 transitions. [2021-11-22 15:03:33,161 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16279 transitions. Word has length 88 [2021-11-22 15:03:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:33,162 INFO L470 AbstractCegarLoop]: Abstraction has 12972 states and 16279 transitions. [2021-11-22 15:03:33,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.714285714285715) internal successors, (234), 14 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16279 transitions. [2021-11-22 15:03:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 15:03:33,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:33,167 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] [2021-11-22 15:03:33,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 15:03:33,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-22 15:03:33,370 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:03:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash -824018739, now seen corresponding path program 1 times [2021-11-22 15:03:33,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:03:33,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921496273] [2021-11-22 15:03:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:33,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:03:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 15:03:33,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:03:33,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921496273] [2021-11-22 15:03:33,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921496273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:03:33,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:03:33,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:03:33,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538769395] [2021-11-22 15:03:33,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:03:33,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:03:33,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:03:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:03:33,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:03:33,532 INFO L87 Difference]: Start difference. First operand 12972 states and 16279 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:03:45,067 INFO L93 Difference]: Finished difference Result 31807 states and 39946 transitions. [2021-11-22 15:03:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:03:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 89 [2021-11-22 15:03:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:03:45,117 INFO L225 Difference]: With dead ends: 31807 [2021-11-22 15:03:45,117 INFO L226 Difference]: Without dead ends: 26547 [2021-11-22 15:03:45,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:03:45,129 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1615 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:03:45,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 858 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:03:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26547 states. [2021-11-22 15:03:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26547 to 12953. [2021-11-22 15:03:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 12952 states have (on average 1.2550957381099443) internal successors, (16256), 12952 states have internal predecessors, (16256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 16256 transitions. [2021-11-22 15:03:50,353 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 16256 transitions. Word has length 89 [2021-11-22 15:03:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:03:50,354 INFO L470 AbstractCegarLoop]: Abstraction has 12953 states and 16256 transitions. [2021-11-22 15:03:50,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:03:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 16256 transitions. [2021-11-22 15:03:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 15:03:50,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:03:50,360 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] [2021-11-22 15:03:50,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 15:03:50,361 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:03:50,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:03:50,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1971790555, now seen corresponding path program 1 times [2021-11-22 15:03:50,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:03:50,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034216880] [2021-11-22 15:03:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:03:50,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:03:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:03:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:03:50,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:03:50,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034216880] [2021-11-22 15:03:50,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034216880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:03:50,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:03:50,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 15:03:50,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867576191] [2021-11-22 15:03:50,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:03:50,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:03:50,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:03:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:03:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:03:50,608 INFO L87 Difference]: Start difference. First operand 12953 states and 16256 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:04:07,719 INFO L93 Difference]: Finished difference Result 43482 states and 54331 transitions. [2021-11-22 15:04:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 15:04:07,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-22 15:04:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:04:07,785 INFO L225 Difference]: With dead ends: 43482 [2021-11-22 15:04:07,785 INFO L226 Difference]: Without dead ends: 36784 [2021-11-22 15:04:07,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-22 15:04:07,800 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1747 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:04:07,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 1172 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 15:04:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36784 states. [2021-11-22 15:04:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36784 to 20642. [2021-11-22 15:04:16,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20642 states, 20641 states have (on average 1.2568673998352793) internal successors, (25943), 20641 states have internal predecessors, (25943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20642 states to 20642 states and 25943 transitions. [2021-11-22 15:04:16,739 INFO L78 Accepts]: Start accepts. Automaton has 20642 states and 25943 transitions. Word has length 90 [2021-11-22 15:04:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:04:16,739 INFO L470 AbstractCegarLoop]: Abstraction has 20642 states and 25943 transitions. [2021-11-22 15:04:16,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:04:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 20642 states and 25943 transitions. [2021-11-22 15:04:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-22 15:04:16,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:04:16,747 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] [2021-11-22 15:04:16,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 15:04:16,748 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:04:16,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:04:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2062121137, now seen corresponding path program 1 times [2021-11-22 15:04:16,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:04:16,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464161287] [2021-11-22 15:04:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:16,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:04:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:16,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:04:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464161287] [2021-11-22 15:04:16,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464161287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:04:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513701881] [2021-11-22 15:04:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:04:16,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:04:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:04:16,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:04:16,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfd30f96-00c6-4aae-a4c1-6e60be704bf2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:04:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:04:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 15:04:17,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:04:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:21,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:04:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:04:23,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513701881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:04:23,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:04:23,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2021-11-22 15:04:23,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046095222] [2021-11-22 15:04:23,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:04:23,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-22 15:04:23,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:04:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-22 15:04:23,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-11-22 15:04:23,107 INFO L87 Difference]: Start difference. First operand 20642 states and 25943 transitions. Second operand has 30 states, 30 states have (on average 7.966666666666667) internal successors, (239), 29 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)