./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.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 72aca9735a0330ad4ed4e9de4f21904354ce62c742d488d0b09ce6da875c2798 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:10:58,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:10:58,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:10:58,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:10:58,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:10:58,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:10:58,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:10:58,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:10:58,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:10:58,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:10:58,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:10:58,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:10:58,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:10:58,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:10:58,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:10:58,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:10:58,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:10:58,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:10:58,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:10:58,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:10:58,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:10:58,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:10:58,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:10:58,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:10:58,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:10:58,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:10:58,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:10:58,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:10:58,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:10:58,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:10:58,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:10:58,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:10:58,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:10:58,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:10:58,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:10:58,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:10:58,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:10:58,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:10:58,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:10:58,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:10:58,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:10:58,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:10:58,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:10:58,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:10:58,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:10:58,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:10:58,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:10:58,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:10:58,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:10:58,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:10:58,297 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:10:58,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:10:58,298 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:10:58,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:10:58,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:10:58,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:10:58,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:10:58,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:10:58,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:10:58,300 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:10:58,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:10:58,300 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:10:58,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:10:58,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:10:58,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:10:58,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:10:58,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:10:58,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:10:58,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:10:58,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:10:58,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:10:58,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:10:58,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:10:58,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:10:58,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:10:58,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:10:58,304 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72aca9735a0330ad4ed4e9de4f21904354ce62c742d488d0b09ce6da875c2798 [2021-12-14 15:10:58,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:10:58,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:10:58,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:10:58,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:10:58,542 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:10:58,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2021-12-14 15:10:58,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179e0e2e9/2a77fda3909546a2b6d78f9874b7f7cb/FLAG0583d1bd0 [2021-12-14 15:10:59,194 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:10:59,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2021-12-14 15:10:59,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179e0e2e9/2a77fda3909546a2b6d78f9874b7f7cb/FLAG0583d1bd0 [2021-12-14 15:10:59,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179e0e2e9/2a77fda3909546a2b6d78f9874b7f7cb [2021-12-14 15:10:59,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:10:59,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:10:59,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:10:59,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:10:59,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:10:59,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:59" (1/1) ... [2021-12-14 15:10:59,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183f5a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:10:59, skipping insertion in model container [2021-12-14 15:10:59,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:10:59" (1/1) ... [2021-12-14 15:10:59,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:10:59,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:10:59,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8448,8461] [2021-12-14 15:10:59,817 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12616,12629] [2021-12-14 15:10:59,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20366,20379] [2021-12-14 15:10:59,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27098,27111] [2021-12-14 15:10:59,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[47963,47976] [2021-12-14 15:11:00,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[73065,73078] [2021-12-14 15:11:00,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:11:00,198 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:11:00,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8448,8461] [2021-12-14 15:11:00,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12616,12629] [2021-12-14 15:11:00,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20366,20379] [2021-12-14 15:11:00,299 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27098,27111] [2021-12-14 15:11:00,352 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[47963,47976] [2021-12-14 15:11:00,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[73065,73078] [2021-12-14 15:11:00,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:11:00,507 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:11:00,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00 WrapperNode [2021-12-14 15:11:00,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:11:00,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:11:00,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:11:00,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:11:00,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,656 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5697 [2021-12-14 15:11:00,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:11:00,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:11:00,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:11:00,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:11:00,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:11:00,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:11:00,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:11:00,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:11:00,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (1/1) ... [2021-12-14 15:11:00,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:11:00,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:11:00,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:11:00,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:11:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:11:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:11:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:11:00,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:11:01,117 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:11:01,119 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:11:03,304 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:11:03,327 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:11:03,327 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:11:03,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:11:03 BoogieIcfgContainer [2021-12-14 15:11:03,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:11:03,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:11:03,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:11:03,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:11:03,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:10:59" (1/3) ... [2021-12-14 15:11:03,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531ab487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:11:03, skipping insertion in model container [2021-12-14 15:11:03,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:11:00" (2/3) ... [2021-12-14 15:11:03,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531ab487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:11:03, skipping insertion in model container [2021-12-14 15:11:03,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:11:03" (3/3) ... [2021-12-14 15:11:03,341 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2021-12-14 15:11:03,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:11:03,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-14 15:11:03,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:11:03,436 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 [2021-12-14 15:11:03,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-14 15:11:03,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 1190 states, 1183 states have (on average 1.7861369399830938) internal successors, (2113), 1189 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 15:11:03,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:03,504 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] [2021-12-14 15:11:03,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash 46255632, now seen corresponding path program 1 times [2021-12-14 15:11:03,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:03,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665599227] [2021-12-14 15:11:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:03,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:03,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:03,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665599227] [2021-12-14 15:11:03,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665599227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:03,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:03,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:11:03,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998888510] [2021-12-14 15:11:03,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:03,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:03,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:03,873 INFO L87 Difference]: Start difference. First operand has 1190 states, 1183 states have (on average 1.7861369399830938) internal successors, (2113), 1189 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:05,034 INFO L93 Difference]: Finished difference Result 2203 states and 3804 transitions. [2021-12-14 15:11:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:11:05,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-14 15:11:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:05,062 INFO L225 Difference]: With dead ends: 2203 [2021-12-14 15:11:05,062 INFO L226 Difference]: Without dead ends: 1434 [2021-12-14 15:11:05,069 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 [2021-12-14 15:11:05,072 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 6710 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6710 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:05,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6710 Valid, 1533 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:11:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-12-14 15:11:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1420. [2021-12-14 15:11:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1414 states have (on average 1.2998585572842998) internal successors, (1838), 1419 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1838 transitions. [2021-12-14 15:11:05,196 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1838 transitions. Word has length 52 [2021-12-14 15:11:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:05,196 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 1838 transitions. [2021-12-14 15:11:05,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1838 transitions. [2021-12-14 15:11:05,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 15:11:05,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:05,200 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] [2021-12-14 15:11:05,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:11:05,200 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -625695834, now seen corresponding path program 1 times [2021-12-14 15:11:05,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:05,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425765549] [2021-12-14 15:11:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:05,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:05,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:05,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425765549] [2021-12-14 15:11:05,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425765549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:05,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:05,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:11:05,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375695039] [2021-12-14 15:11:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:05,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:05,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:05,352 INFO L87 Difference]: Start difference. First operand 1420 states and 1838 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:06,197 INFO L93 Difference]: Finished difference Result 2665 states and 3516 transitions. [2021-12-14 15:11:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:11:06,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-14 15:11:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:06,205 INFO L225 Difference]: With dead ends: 2665 [2021-12-14 15:11:06,252 INFO L226 Difference]: Without dead ends: 1806 [2021-12-14 15:11:06,254 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 [2021-12-14 15:11:06,255 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 4431 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4431 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:06,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4431 Valid, 902 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:11:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-12-14 15:11:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1796. [2021-12-14 15:11:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1790 states have (on average 1.318435754189944) internal successors, (2360), 1795 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2360 transitions. [2021-12-14 15:11:06,324 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2360 transitions. Word has length 52 [2021-12-14 15:11:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:06,325 INFO L470 AbstractCegarLoop]: Abstraction has 1796 states and 2360 transitions. [2021-12-14 15:11:06,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2360 transitions. [2021-12-14 15:11:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 15:11:06,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:06,328 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] [2021-12-14 15:11:06,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:11:06,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:06,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:06,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1958316630, now seen corresponding path program 1 times [2021-12-14 15:11:06,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:06,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067666459] [2021-12-14 15:11:06,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:06,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:06,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:06,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067666459] [2021-12-14 15:11:06,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067666459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:06,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:06,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:11:06,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085510277] [2021-12-14 15:11:06,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:06,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:06,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:06,402 INFO L87 Difference]: Start difference. First operand 1796 states and 2360 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:07,196 INFO L93 Difference]: Finished difference Result 3577 states and 4761 transitions. [2021-12-14 15:11:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:11:07,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-14 15:11:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:07,208 INFO L225 Difference]: With dead ends: 3577 [2021-12-14 15:11:07,208 INFO L226 Difference]: Without dead ends: 2639 [2021-12-14 15:11:07,211 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 [2021-12-14 15:11:07,213 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 3992 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3992 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:07,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3992 Valid, 859 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:11:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-12-14 15:11:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2633. [2021-12-14 15:11:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3113818043395509) internal successors, (3445), 2632 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3445 transitions. [2021-12-14 15:11:07,372 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3445 transitions. Word has length 52 [2021-12-14 15:11:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:07,373 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 3445 transitions. [2021-12-14 15:11:07,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3445 transitions. [2021-12-14 15:11:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:11:07,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:07,378 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] [2021-12-14 15:11:07,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:11:07,379 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1639759782, now seen corresponding path program 1 times [2021-12-14 15:11:07,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:07,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981382656] [2021-12-14 15:11:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:07,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:07,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:07,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981382656] [2021-12-14 15:11:07,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981382656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:07,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:07,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:11:07,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047065115] [2021-12-14 15:11:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:07,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:11:07,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:11:07,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:11:07,574 INFO L87 Difference]: Start difference. First operand 2633 states and 3445 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:09,619 INFO L93 Difference]: Finished difference Result 5492 states and 7546 transitions. [2021-12-14 15:11:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:11:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-14 15:11:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:09,638 INFO L225 Difference]: With dead ends: 5492 [2021-12-14 15:11:09,639 INFO L226 Difference]: Without dead ends: 4964 [2021-12-14 15:11:09,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:11:09,647 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 5010 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:09,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5010 Valid, 3641 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3137 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:11:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2021-12-14 15:11:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 2633. [2021-12-14 15:11:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3110011419870575) internal successors, (3444), 2632 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3444 transitions. [2021-12-14 15:11:09,778 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3444 transitions. Word has length 54 [2021-12-14 15:11:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:09,779 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 3444 transitions. [2021-12-14 15:11:09,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3444 transitions. [2021-12-14 15:11:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:11:09,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:09,783 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] [2021-12-14 15:11:09,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:11:09,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:09,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1969154310, now seen corresponding path program 1 times [2021-12-14 15:11:09,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:09,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222028174] [2021-12-14 15:11:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:09,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:09,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222028174] [2021-12-14 15:11:09,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222028174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:09,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:09,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:11:09,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502068523] [2021-12-14 15:11:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:09,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:11:09,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:11:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:11:09,950 INFO L87 Difference]: Start difference. First operand 2633 states and 3444 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:11,832 INFO L93 Difference]: Finished difference Result 4506 states and 6094 transitions. [2021-12-14 15:11:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:11:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-14 15:11:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:11,849 INFO L225 Difference]: With dead ends: 4506 [2021-12-14 15:11:11,849 INFO L226 Difference]: Without dead ends: 4500 [2021-12-14 15:11:11,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:11:11,852 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 5720 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5720 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:11,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5720 Valid, 2848 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:11:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-12-14 15:11:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 2633. [2021-12-14 15:11:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3106204796345642) internal successors, (3443), 2632 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3443 transitions. [2021-12-14 15:11:12,008 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3443 transitions. Word has length 54 [2021-12-14 15:11:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:12,010 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 3443 transitions. [2021-12-14 15:11:12,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3443 transitions. [2021-12-14 15:11:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:11:12,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:12,018 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] [2021-12-14 15:11:12,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:11:12,019 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash -91421350, now seen corresponding path program 1 times [2021-12-14 15:11:12,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:12,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854100600] [2021-12-14 15:11:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:12,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:12,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:12,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854100600] [2021-12-14 15:11:12,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854100600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:12,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:12,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:11:12,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579718760] [2021-12-14 15:11:12,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:12,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:11:12,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:11:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:11:12,155 INFO L87 Difference]: Start difference. First operand 2633 states and 3443 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:13,406 INFO L93 Difference]: Finished difference Result 4690 states and 6404 transitions. [2021-12-14 15:11:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 15:11:13,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-14 15:11:13,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:13,417 INFO L225 Difference]: With dead ends: 4690 [2021-12-14 15:11:13,417 INFO L226 Difference]: Without dead ends: 4006 [2021-12-14 15:11:13,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-14 15:11:13,420 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 5774 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5774 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:13,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5774 Valid, 1954 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:11:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2021-12-14 15:11:13,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 2633. [2021-12-14 15:11:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.3102398172820708) internal successors, (3442), 2632 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3442 transitions. [2021-12-14 15:11:13,548 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3442 transitions. Word has length 54 [2021-12-14 15:11:13,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:13,548 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 3442 transitions. [2021-12-14 15:11:13,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:13,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3442 transitions. [2021-12-14 15:11:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-14 15:11:13,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:13,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:13,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:11:13,552 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:13,553 INFO L85 PathProgramCache]: Analyzing trace with hash -217892301, now seen corresponding path program 1 times [2021-12-14 15:11:13,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:13,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400788606] [2021-12-14 15:11:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:13,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:13,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:13,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400788606] [2021-12-14 15:11:13,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400788606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:13,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:13,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:13,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128220183] [2021-12-14 15:11:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:13,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:13,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:13,596 INFO L87 Difference]: Start difference. First operand 2633 states and 3442 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:13,831 INFO L93 Difference]: Finished difference Result 3809 states and 5163 transitions. [2021-12-14 15:11:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-14 15:11:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:13,840 INFO L225 Difference]: With dead ends: 3809 [2021-12-14 15:11:13,840 INFO L226 Difference]: Without dead ends: 2398 [2021-12-14 15:11:13,842 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 [2021-12-14 15:11:13,843 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 632 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:13,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 1366 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:11:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-12-14 15:11:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2396. [2021-12-14 15:11:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2390 states have (on average 1.3112970711297072) internal successors, (3134), 2395 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3134 transitions. [2021-12-14 15:11:13,987 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3134 transitions. Word has length 55 [2021-12-14 15:11:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:13,987 INFO L470 AbstractCegarLoop]: Abstraction has 2396 states and 3134 transitions. [2021-12-14 15:11:13,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3134 transitions. [2021-12-14 15:11:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-14 15:11:13,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:13,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:13,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:11:13,990 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1212692211, now seen corresponding path program 1 times [2021-12-14 15:11:13,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:13,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133242723] [2021-12-14 15:11:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:13,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:14,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:14,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133242723] [2021-12-14 15:11:14,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133242723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:14,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:14,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:14,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048072850] [2021-12-14 15:11:14,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:14,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:14,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:14,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:14,046 INFO L87 Difference]: Start difference. First operand 2396 states and 3134 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:14,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:14,268 INFO L93 Difference]: Finished difference Result 4034 states and 5593 transitions. [2021-12-14 15:11:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:14,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-14 15:11:14,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:14,279 INFO L225 Difference]: With dead ends: 4034 [2021-12-14 15:11:14,279 INFO L226 Difference]: Without dead ends: 2929 [2021-12-14 15:11:14,281 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 [2021-12-14 15:11:14,282 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 490 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:14,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 1447 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:11:14,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2021-12-14 15:11:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2927. [2021-12-14 15:11:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2921 states have (on average 1.3543307086614174) internal successors, (3956), 2926 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3956 transitions. [2021-12-14 15:11:14,505 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3956 transitions. Word has length 55 [2021-12-14 15:11:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:14,505 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 3956 transitions. [2021-12-14 15:11:14,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:14,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3956 transitions. [2021-12-14 15:11:14,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-14 15:11:14,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:14,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:14,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:11:14,508 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:14,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:14,509 INFO L85 PathProgramCache]: Analyzing trace with hash 508156110, now seen corresponding path program 1 times [2021-12-14 15:11:14,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:14,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997410507] [2021-12-14 15:11:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:14,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:14,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:14,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997410507] [2021-12-14 15:11:14,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997410507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:14,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:14,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:14,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794708291] [2021-12-14 15:11:14,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:14,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:14,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:14,562 INFO L87 Difference]: Start difference. First operand 2927 states and 3956 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:14,805 INFO L93 Difference]: Finished difference Result 5825 states and 8243 transitions. [2021-12-14 15:11:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-14 15:11:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:14,820 INFO L225 Difference]: With dead ends: 5825 [2021-12-14 15:11:14,820 INFO L226 Difference]: Without dead ends: 4034 [2021-12-14 15:11:14,823 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 [2021-12-14 15:11:14,823 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 448 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:14,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 1480 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2021-12-14 15:11:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 4032. [2021-12-14 15:11:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 4026 states have (on average 1.378787878787879) internal successors, (5551), 4031 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5551 transitions. [2021-12-14 15:11:15,135 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5551 transitions. Word has length 55 [2021-12-14 15:11:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:15,136 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 5551 transitions. [2021-12-14 15:11:15,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5551 transitions. [2021-12-14 15:11:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 15:11:15,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:15,138 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] [2021-12-14 15:11:15,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:11:15,139 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1409707165, now seen corresponding path program 1 times [2021-12-14 15:11:15,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:15,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801581148] [2021-12-14 15:11:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:15,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:15,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:15,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801581148] [2021-12-14 15:11:15,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801581148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:15,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:15,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:15,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960056158] [2021-12-14 15:11:15,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:15,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:15,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:15,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:15,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:15,191 INFO L87 Difference]: Start difference. First operand 4032 states and 5551 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) [2021-12-14 15:11:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:15,533 INFO L93 Difference]: Finished difference Result 8005 states and 11199 transitions. [2021-12-14 15:11:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:15,534 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 [2021-12-14 15:11:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:15,543 INFO L225 Difference]: With dead ends: 8005 [2021-12-14 15:11:15,543 INFO L226 Difference]: Without dead ends: 4544 [2021-12-14 15:11:15,548 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 [2021-12-14 15:11:15,549 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 693 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:15,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 1009 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:11:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2021-12-14 15:11:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 3633. [2021-12-14 15:11:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3628 states have (on average 1.3930540242557883) internal successors, (5054), 3632 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5054 transitions. [2021-12-14 15:11:15,832 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5054 transitions. Word has length 56 [2021-12-14 15:11:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:15,832 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 5054 transitions. [2021-12-14 15:11:15,833 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) [2021-12-14 15:11:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5054 transitions. [2021-12-14 15:11:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 15:11:15,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:15,835 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] [2021-12-14 15:11:15,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:11:15,835 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1142157029, now seen corresponding path program 1 times [2021-12-14 15:11:15,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:15,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392488758] [2021-12-14 15:11:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:15,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:16,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:16,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392488758] [2021-12-14 15:11:16,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392488758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:16,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:16,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:11:16,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050367546] [2021-12-14 15:11:16,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:16,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:11:16,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:11:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:11:16,178 INFO L87 Difference]: Start difference. First operand 3633 states and 5054 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) [2021-12-14 15:11:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:17,598 INFO L93 Difference]: Finished difference Result 6277 states and 8735 transitions. [2021-12-14 15:11:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:11:17,598 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 [2021-12-14 15:11:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:17,607 INFO L225 Difference]: With dead ends: 6277 [2021-12-14 15:11:17,607 INFO L226 Difference]: Without dead ends: 6213 [2021-12-14 15:11:17,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:11:17,608 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 3979 mSDsluCounter, 4733 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3979 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:17,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3979 Valid, 5720 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:11:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6213 states. [2021-12-14 15:11:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6213 to 3620. [2021-12-14 15:11:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3616 states have (on average 1.393528761061947) internal successors, (5039), 3619 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5039 transitions. [2021-12-14 15:11:17,909 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5039 transitions. Word has length 56 [2021-12-14 15:11:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:17,910 INFO L470 AbstractCegarLoop]: Abstraction has 3620 states and 5039 transitions. [2021-12-14 15:11:17,910 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) [2021-12-14 15:11:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5039 transitions. [2021-12-14 15:11:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 15:11:17,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:17,912 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] [2021-12-14 15:11:17,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:11:17,912 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:17,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:17,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1119831979, now seen corresponding path program 1 times [2021-12-14 15:11:17,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:17,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621310312] [2021-12-14 15:11:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:17,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:17,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:17,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621310312] [2021-12-14 15:11:17,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621310312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:17,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:17,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:17,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739640900] [2021-12-14 15:11:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:17,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:17,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:17,957 INFO L87 Difference]: Start difference. First operand 3620 states and 5039 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) [2021-12-14 15:11:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:18,388 INFO L93 Difference]: Finished difference Result 7301 states and 10334 transitions. [2021-12-14 15:11:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:18,389 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 [2021-12-14 15:11:18,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:18,397 INFO L225 Difference]: With dead ends: 7301 [2021-12-14 15:11:18,397 INFO L226 Difference]: Without dead ends: 4120 [2021-12-14 15:11:18,401 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 [2021-12-14 15:11:18,402 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 531 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:18,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 817 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-12-14 15:11:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3309. [2021-12-14 15:11:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3306 states have (on average 1.4035087719298245) internal successors, (4640), 3308 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4640 transitions. [2021-12-14 15:11:18,691 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4640 transitions. Word has length 56 [2021-12-14 15:11:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:18,692 INFO L470 AbstractCegarLoop]: Abstraction has 3309 states and 4640 transitions. [2021-12-14 15:11:18,692 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) [2021-12-14 15:11:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4640 transitions. [2021-12-14 15:11:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-14 15:11:18,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:18,693 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] [2021-12-14 15:11:18,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:11:18,694 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:18,695 INFO L85 PathProgramCache]: Analyzing trace with hash -198475703, now seen corresponding path program 1 times [2021-12-14 15:11:18,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:18,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080508362] [2021-12-14 15:11:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:18,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:19,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:19,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080508362] [2021-12-14 15:11:19,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080508362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:19,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:19,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:11:19,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328632710] [2021-12-14 15:11:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:19,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:11:19,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:11:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:11:19,197 INFO L87 Difference]: Start difference. First operand 3309 states and 4640 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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) [2021-12-14 15:11:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:21,839 INFO L93 Difference]: Finished difference Result 5857 states and 8183 transitions. [2021-12-14 15:11:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-14 15:11:21,840 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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 [2021-12-14 15:11:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:21,848 INFO L225 Difference]: With dead ends: 5857 [2021-12-14 15:11:21,848 INFO L226 Difference]: Without dead ends: 5853 [2021-12-14 15:11:21,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 15:11:21,850 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 5207 mSDsluCounter, 7503 mSDsCounter, 0 mSdLazyCounter, 2952 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 8221 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:21,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5207 Valid, 8221 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2952 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:11:21,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2021-12-14 15:11:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 3317. [2021-12-14 15:11:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3314 states have (on average 1.4031382015691007) internal successors, (4650), 3316 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4650 transitions. [2021-12-14 15:11:22,155 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4650 transitions. Word has length 57 [2021-12-14 15:11:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:22,156 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 4650 transitions. [2021-12-14 15:11:22,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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) [2021-12-14 15:11:22,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4650 transitions. [2021-12-14 15:11:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-14 15:11:22,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:22,158 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] [2021-12-14 15:11:22,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:11:22,158 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:22,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1444192760, now seen corresponding path program 1 times [2021-12-14 15:11:22,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:22,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363363547] [2021-12-14 15:11:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:22,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:22,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:22,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363363547] [2021-12-14 15:11:22,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363363547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:22,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:22,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:11:22,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322379548] [2021-12-14 15:11:22,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:22,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:11:22,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:11:22,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:11:22,613 INFO L87 Difference]: Start difference. First operand 3317 states and 4650 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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) [2021-12-14 15:11:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:25,056 INFO L93 Difference]: Finished difference Result 5753 states and 8043 transitions. [2021-12-14 15:11:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:11:25,057 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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 [2021-12-14 15:11:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:25,066 INFO L225 Difference]: With dead ends: 5753 [2021-12-14 15:11:25,066 INFO L226 Difference]: Without dead ends: 5749 [2021-12-14 15:11:25,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2021-12-14 15:11:25,068 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 5906 mSDsluCounter, 6109 mSDsCounter, 0 mSdLazyCounter, 2641 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5906 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:25,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5906 Valid, 6811 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2641 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:11:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2021-12-14 15:11:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 3330. [2021-12-14 15:11:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 3327 states have (on average 1.4030658250676284) internal successors, (4668), 3329 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 4668 transitions. [2021-12-14 15:11:25,419 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 4668 transitions. Word has length 57 [2021-12-14 15:11:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:25,420 INFO L470 AbstractCegarLoop]: Abstraction has 3330 states and 4668 transitions. [2021-12-14 15:11:25,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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) [2021-12-14 15:11:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 4668 transitions. [2021-12-14 15:11:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-14 15:11:25,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:25,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:25,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:11:25,422 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:25,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:25,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1255854773, now seen corresponding path program 1 times [2021-12-14 15:11:25,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:25,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223125206] [2021-12-14 15:11:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:25,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:25,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:25,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223125206] [2021-12-14 15:11:25,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223125206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:25,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:25,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-14 15:11:25,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676227417] [2021-12-14 15:11:25,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:25,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 15:11:25,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 15:11:25,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:11:25,835 INFO L87 Difference]: Start difference. First operand 3330 states and 4668 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:28,342 INFO L93 Difference]: Finished difference Result 5764 states and 8065 transitions. [2021-12-14 15:11:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 15:11:28,342 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-12-14 15:11:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:28,350 INFO L225 Difference]: With dead ends: 5764 [2021-12-14 15:11:28,350 INFO L226 Difference]: Without dead ends: 5760 [2021-12-14 15:11:28,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2021-12-14 15:11:28,353 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 4336 mSDsluCounter, 6551 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 7273 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:28,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4336 Valid, 7273 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:11:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5760 states. [2021-12-14 15:11:28,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5760 to 3318. [2021-12-14 15:11:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 3316 states have (on average 1.4034981905910735) internal successors, (4654), 3317 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4654 transitions. [2021-12-14 15:11:28,701 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4654 transitions. Word has length 58 [2021-12-14 15:11:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:28,702 INFO L470 AbstractCegarLoop]: Abstraction has 3318 states and 4654 transitions. [2021-12-14 15:11:28,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4654 transitions. [2021-12-14 15:11:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-14 15:11:28,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:28,703 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] [2021-12-14 15:11:28,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:11:28,704 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2124806246, now seen corresponding path program 1 times [2021-12-14 15:11:28,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:28,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924532990] [2021-12-14 15:11:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:28,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:28,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:28,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924532990] [2021-12-14 15:11:28,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924532990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:28,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:28,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:11:28,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507342073] [2021-12-14 15:11:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:28,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:11:28,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:11:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:11:28,947 INFO L87 Difference]: Start difference. First operand 3318 states and 4654 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:30,688 INFO L93 Difference]: Finished difference Result 5804 states and 8084 transitions. [2021-12-14 15:11:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:11:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-12-14 15:11:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:30,694 INFO L225 Difference]: With dead ends: 5804 [2021-12-14 15:11:30,694 INFO L226 Difference]: Without dead ends: 5719 [2021-12-14 15:11:30,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-12-14 15:11:30,695 INFO L933 BasicCegarLoop]: 993 mSDtfsCounter, 3557 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3557 SdHoareTripleChecker+Valid, 4336 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:30,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3557 Valid, 4336 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:11:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2021-12-14 15:11:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 3276. [2021-12-14 15:11:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3275 states have (on average 1.4042748091603054) internal successors, (4599), 3275 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4599 transitions. [2021-12-14 15:11:30,983 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4599 transitions. Word has length 58 [2021-12-14 15:11:30,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:30,983 INFO L470 AbstractCegarLoop]: Abstraction has 3276 states and 4599 transitions. [2021-12-14 15:11:30,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4599 transitions. [2021-12-14 15:11:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-14 15:11:30,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:30,985 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] [2021-12-14 15:11:30,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 15:11:30,986 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:30,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:30,986 INFO L85 PathProgramCache]: Analyzing trace with hash -386654778, now seen corresponding path program 1 times [2021-12-14 15:11:30,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:30,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331671845] [2021-12-14 15:11:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:30,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:31,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:31,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331671845] [2021-12-14 15:11:31,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331671845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:31,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:31,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:11:31,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023686066] [2021-12-14 15:11:31,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:31,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:31,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:31,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:31,041 INFO L87 Difference]: Start difference. First operand 3276 states and 4599 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:31,844 INFO L93 Difference]: Finished difference Result 10360 states and 14863 transitions. [2021-12-14 15:11:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:11:31,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-14 15:11:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:31,855 INFO L225 Difference]: With dead ends: 10360 [2021-12-14 15:11:31,855 INFO L226 Difference]: Without dead ends: 7606 [2021-12-14 15:11:31,859 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 [2021-12-14 15:11:31,859 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 1461 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:31,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 1067 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-12-14 15:11:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 5734. [2021-12-14 15:11:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5733 states have (on average 1.4025815454386883) internal successors, (8041), 5733 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 8041 transitions. [2021-12-14 15:11:32,409 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 8041 transitions. Word has length 61 [2021-12-14 15:11:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:32,409 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 8041 transitions. [2021-12-14 15:11:32,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 8041 transitions. [2021-12-14 15:11:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 15:11:32,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:32,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:32,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 15:11:32,411 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash 633580297, now seen corresponding path program 1 times [2021-12-14 15:11:32,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:32,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175792910] [2021-12-14 15:11:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:32,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:32,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:32,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175792910] [2021-12-14 15:11:32,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175792910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:32,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:32,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:11:32,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60277164] [2021-12-14 15:11:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:32,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:32,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:32,467 INFO L87 Difference]: Start difference. First operand 5734 states and 8041 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:33,014 INFO L93 Difference]: Finished difference Result 9030 states and 12708 transitions. [2021-12-14 15:11:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:11:33,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-12-14 15:11:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:33,019 INFO L225 Difference]: With dead ends: 9030 [2021-12-14 15:11:33,019 INFO L226 Difference]: Without dead ends: 3776 [2021-12-14 15:11:33,024 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 [2021-12-14 15:11:33,025 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 915 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:33,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 732 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:11:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-12-14 15:11:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3772. [2021-12-14 15:11:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 3771 states have (on average 1.3781490320869796) internal successors, (5197), 3771 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 5197 transitions. [2021-12-14 15:11:33,442 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 5197 transitions. Word has length 62 [2021-12-14 15:11:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:33,442 INFO L470 AbstractCegarLoop]: Abstraction has 3772 states and 5197 transitions. [2021-12-14 15:11:33,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 5197 transitions. [2021-12-14 15:11:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 15:11:33,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:33,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:33,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 15:11:33,444 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 480339852, now seen corresponding path program 1 times [2021-12-14 15:11:33,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:33,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593096482] [2021-12-14 15:11:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:33,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:33,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:33,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593096482] [2021-12-14 15:11:33,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593096482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:33,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:33,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:33,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808614852] [2021-12-14 15:11:33,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:33,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:33,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:33,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:33,507 INFO L87 Difference]: Start difference. First operand 3772 states and 5197 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:34,379 INFO L93 Difference]: Finished difference Result 10042 states and 14019 transitions. [2021-12-14 15:11:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-14 15:11:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:34,389 INFO L225 Difference]: With dead ends: 10042 [2021-12-14 15:11:34,389 INFO L226 Difference]: Without dead ends: 6750 [2021-12-14 15:11:34,393 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 [2021-12-14 15:11:34,394 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 234 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:34,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 800 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6750 states. [2021-12-14 15:11:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6750 to 6332. [2021-12-14 15:11:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6332 states, 6331 states have (on average 1.3794029379244985) internal successors, (8733), 6331 states have internal predecessors, (8733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6332 states to 6332 states and 8733 transitions. [2021-12-14 15:11:35,286 INFO L78 Accepts]: Start accepts. Automaton has 6332 states and 8733 transitions. Word has length 66 [2021-12-14 15:11:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:35,286 INFO L470 AbstractCegarLoop]: Abstraction has 6332 states and 8733 transitions. [2021-12-14 15:11:35,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 6332 states and 8733 transitions. [2021-12-14 15:11:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 15:11:35,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:35,288 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] [2021-12-14 15:11:35,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 15:11:35,288 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -877917453, now seen corresponding path program 1 times [2021-12-14 15:11:35,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:35,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507258052] [2021-12-14 15:11:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:35,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:35,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:35,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507258052] [2021-12-14 15:11:35,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507258052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:35,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:35,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:11:35,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998786905] [2021-12-14 15:11:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:35,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:11:35,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:11:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:11:35,350 INFO L87 Difference]: Start difference. First operand 6332 states and 8733 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) [2021-12-14 15:11:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:37,213 INFO L93 Difference]: Finished difference Result 13361 states and 18282 transitions. [2021-12-14 15:11:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 15:11:37,213 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 [2021-12-14 15:11:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:37,228 INFO L225 Difference]: With dead ends: 13361 [2021-12-14 15:11:37,228 INFO L226 Difference]: Without dead ends: 13359 [2021-12-14 15:11:37,230 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 [2021-12-14 15:11:37,231 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 575 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:37,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 2162 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:11:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13359 states. [2021-12-14 15:11:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13359 to 6776. [2021-12-14 15:11:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6776 states, 6775 states have (on average 1.3545387453874538) internal successors, (9177), 6775 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 9177 transitions. [2021-12-14 15:11:38,136 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 9177 transitions. Word has length 69 [2021-12-14 15:11:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:38,137 INFO L470 AbstractCegarLoop]: Abstraction has 6776 states and 9177 transitions. [2021-12-14 15:11:38,137 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) [2021-12-14 15:11:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 9177 transitions. [2021-12-14 15:11:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-14 15:11:38,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:38,141 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] [2021-12-14 15:11:38,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 15:11:38,141 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1274758828, now seen corresponding path program 1 times [2021-12-14 15:11:38,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:38,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421346902] [2021-12-14 15:11:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:38,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:38,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:38,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421346902] [2021-12-14 15:11:38,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421346902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:38,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:38,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:38,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313895289] [2021-12-14 15:11:38,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:38,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:38,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:38,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:38,186 INFO L87 Difference]: Start difference. First operand 6776 states and 9177 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) [2021-12-14 15:11:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:39,723 INFO L93 Difference]: Finished difference Result 18150 states and 24713 transitions. [2021-12-14 15:11:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:39,723 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 [2021-12-14 15:11:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:39,739 INFO L225 Difference]: With dead ends: 18150 [2021-12-14 15:11:39,740 INFO L226 Difference]: Without dead ends: 11854 [2021-12-14 15:11:39,747 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 [2021-12-14 15:11:39,748 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 253 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:39,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 744 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11854 states. [2021-12-14 15:11:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11854 to 11852. [2021-12-14 15:11:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11852 states, 11851 states have (on average 1.3432621719686102) internal successors, (15919), 11851 states have internal predecessors, (15919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11852 states to 11852 states and 15919 transitions. [2021-12-14 15:11:41,457 INFO L78 Accepts]: Start accepts. Automaton has 11852 states and 15919 transitions. Word has length 70 [2021-12-14 15:11:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:41,458 INFO L470 AbstractCegarLoop]: Abstraction has 11852 states and 15919 transitions. [2021-12-14 15:11:41,458 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) [2021-12-14 15:11:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11852 states and 15919 transitions. [2021-12-14 15:11:41,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 15:11:41,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:41,460 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] [2021-12-14 15:11:41,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 15:11:41,460 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:41,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:41,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1811246508, now seen corresponding path program 1 times [2021-12-14 15:11:41,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:41,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003301511] [2021-12-14 15:11:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:41,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:41,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:41,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003301511] [2021-12-14 15:11:41,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003301511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:41,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:41,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:11:41,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55322646] [2021-12-14 15:11:41,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:41,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:41,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:41,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:41,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:41,514 INFO L87 Difference]: Start difference. First operand 11852 states and 15919 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) [2021-12-14 15:11:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:44,387 INFO L93 Difference]: Finished difference Result 20746 states and 28003 transitions. [2021-12-14 15:11:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:11:44,388 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 [2021-12-14 15:11:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:44,431 INFO L225 Difference]: With dead ends: 20746 [2021-12-14 15:11:44,432 INFO L226 Difference]: Without dead ends: 17062 [2021-12-14 15:11:44,448 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 [2021-12-14 15:11:44,450 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 935 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:44,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1290 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:11:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17062 states. [2021-12-14 15:11:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17062 to 14830. [2021-12-14 15:11:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14830 states, 14829 states have (on average 1.3404140535437319) internal successors, (19877), 14829 states have internal predecessors, (19877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14830 states to 14830 states and 19877 transitions. [2021-12-14 15:11:46,957 INFO L78 Accepts]: Start accepts. Automaton has 14830 states and 19877 transitions. Word has length 71 [2021-12-14 15:11:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:46,958 INFO L470 AbstractCegarLoop]: Abstraction has 14830 states and 19877 transitions. [2021-12-14 15:11:46,958 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) [2021-12-14 15:11:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14830 states and 19877 transitions. [2021-12-14 15:11:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:11:46,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:46,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:46,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 15:11:46,961 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:46,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1813757315, now seen corresponding path program 1 times [2021-12-14 15:11:46,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:46,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853356807] [2021-12-14 15:11:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:46,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:47,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:47,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853356807] [2021-12-14 15:11:47,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853356807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:47,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:47,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:11:47,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863634989] [2021-12-14 15:11:47,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:47,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:11:47,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:11:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:11:47,009 INFO L87 Difference]: Start difference. First operand 14830 states and 19877 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:48,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:48,849 INFO L93 Difference]: Finished difference Result 17882 states and 23915 transitions. [2021-12-14 15:11:48,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:11:48,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-14 15:11:48,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:48,861 INFO L225 Difference]: With dead ends: 17882 [2021-12-14 15:11:48,861 INFO L226 Difference]: Without dead ends: 11784 [2021-12-14 15:11:48,868 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 [2021-12-14 15:11:48,868 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 169 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:48,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 890 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:11:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11784 states. [2021-12-14 15:11:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11784 to 11714. [2021-12-14 15:11:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11714 states, 11713 states have (on average 1.3169128318961838) internal successors, (15425), 11713 states have internal predecessors, (15425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11714 states to 11714 states and 15425 transitions. [2021-12-14 15:11:50,768 INFO L78 Accepts]: Start accepts. Automaton has 11714 states and 15425 transitions. Word has length 73 [2021-12-14 15:11:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:50,768 INFO L470 AbstractCegarLoop]: Abstraction has 11714 states and 15425 transitions. [2021-12-14 15:11:50,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 11714 states and 15425 transitions. [2021-12-14 15:11:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:11:50,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:50,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:11:50,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 15:11:50,770 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash -711762074, now seen corresponding path program 1 times [2021-12-14 15:11:50,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:50,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583663617] [2021-12-14 15:11:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:50,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:50,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:50,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583663617] [2021-12-14 15:11:50,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583663617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:50,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:50,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:11:50,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198920342] [2021-12-14 15:11:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:50,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:11:50,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:11:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:11:50,847 INFO L87 Difference]: Start difference. First operand 11714 states and 15425 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:11:56,276 INFO L93 Difference]: Finished difference Result 35078 states and 46023 transitions. [2021-12-14 15:11:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 15:11:56,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-14 15:11:56,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:11:56,315 INFO L225 Difference]: With dead ends: 35078 [2021-12-14 15:11:56,316 INFO L226 Difference]: Without dead ends: 28852 [2021-12-14 15:11:56,327 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 [2021-12-14 15:11:56,327 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 2655 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:11:56,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2655 Valid, 729 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:11:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28852 states. [2021-12-14 15:11:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28852 to 13574. [2021-12-14 15:11:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13573 states have (on average 1.3069328814558314) internal successors, (17739), 13573 states have internal predecessors, (17739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 17739 transitions. [2021-12-14 15:11:58,562 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 17739 transitions. Word has length 74 [2021-12-14 15:11:58,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:11:58,562 INFO L470 AbstractCegarLoop]: Abstraction has 13574 states and 17739 transitions. [2021-12-14 15:11:58,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:11:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 17739 transitions. [2021-12-14 15:11:58,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-14 15:11:58,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:11:58,564 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] [2021-12-14 15:11:58,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 15:11:58,565 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-14 15:11:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:11:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1397189844, now seen corresponding path program 1 times [2021-12-14 15:11:58,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:11:58,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872055169] [2021-12-14 15:11:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:11:58,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:11:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:11:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:11:58,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:11:58,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872055169] [2021-12-14 15:11:58,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872055169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:11:58,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:11:58,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:11:58,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385456712] [2021-12-14 15:11:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:11:58,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:11:58,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:11:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:11:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:11:58,620 INFO L87 Difference]: Start difference. First operand 13574 states and 17739 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)