./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.3.1.ufo.UNBOUNDED.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 c9fed3b6ecd1551705440e8c2971862b3f83812db515b8181a20d7126e9055f8 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:08:25,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:08:25,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:08:25,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:08:25,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:08:25,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:08:25,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:08:25,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:08:25,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:08:25,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:08:25,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:08:25,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:08:25,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:08:25,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:08:25,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:08:25,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:08:25,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:08:25,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:08:25,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:08:25,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:08:25,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:08:25,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:08:25,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:08:25,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:08:25,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:08:25,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:08:25,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:08:25,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:08:25,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:08:25,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:08:25,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:08:25,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:08:25,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:08:25,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:08:25,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:08:25,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:08:25,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:08:25,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:08:25,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:08:25,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:08:25,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:08:25,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:08:25,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:08:25,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:08:25,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:08:25,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:08:25,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:08:25,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:08:25,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:08:25,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:08:25,945 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:08:25,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:08:25,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:08:25,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:08:25,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:08:25,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:08:25,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:08:25,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:08:25,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:08:25,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:08:25,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:08:25,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:08:25,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:08:25,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:08:25,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:08:25,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:08:25,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:08:25,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:08:25,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:08:25,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:08:25,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:08:25,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:08:25,949 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:08:25,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:08:25,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:08:25,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:08:25,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9fed3b6ecd1551705440e8c2971862b3f83812db515b8181a20d7126e9055f8 [2021-12-17 16:08:26,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:08:26,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:08:26,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:08:26,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:08:26,179 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:08:26,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-17 16:08:26,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef344ccc3/732cf1b5ef0448fe8f0d8ab71cdbb46b/FLAGa25bca78f [2021-12-17 16:08:26,756 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:08:26,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-17 16:08:26,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef344ccc3/732cf1b5ef0448fe8f0d8ab71cdbb46b/FLAGa25bca78f [2021-12-17 16:08:27,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef344ccc3/732cf1b5ef0448fe8f0d8ab71cdbb46b [2021-12-17 16:08:27,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:08:27,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:08:27,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:08:27,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:08:27,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:08:27,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:08:27" (1/1) ... [2021-12-17 16:08:27,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11adf2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:27, skipping insertion in model container [2021-12-17 16:08:27,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:08:27" (1/1) ... [2021-12-17 16:08:27,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:08:27,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:08:27,492 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7186,7199] [2021-12-17 16:08:27,518 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11327,11340] [2021-12-17 16:08:27,560 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18377,18390] [2021-12-17 16:08:27,573 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24849,24862] [2021-12-17 16:08:27,622 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43924,43937] [2021-12-17 16:08:27,703 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71846,71859] [2021-12-17 16:08:27,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:08:27,849 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:08:27,879 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7186,7199] [2021-12-17 16:08:27,889 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11327,11340] [2021-12-17 16:08:27,899 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18377,18390] [2021-12-17 16:08:27,906 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24849,24862] [2021-12-17 16:08:27,944 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43924,43937] [2021-12-17 16:08:27,987 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.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71846,71859] [2021-12-17 16:08:28,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:08:28,065 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:08:28,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28 WrapperNode [2021-12-17 16:08:28,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:08:28,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:08:28,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:08:28,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:08:28,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,190 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5645 [2021-12-17 16:08:28,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:08:28,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:08:28,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:08:28,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:08:28,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:08:28,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:08:28,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:08:28,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:08:28,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (1/1) ... [2021-12-17 16:08:28,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:08:28,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:08:28,353 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) [2021-12-17 16:08:28,375 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 [2021-12-17 16:08:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:08:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:08:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:08:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:08:28,596 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:08:28,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:08:30,298 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:08:30,316 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:08:30,316 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:08:30,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:08:30 BoogieIcfgContainer [2021-12-17 16:08:30,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:08:30,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:08:30,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:08:30,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:08:30,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:08:27" (1/3) ... [2021-12-17 16:08:30,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373a5093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:08:30, skipping insertion in model container [2021-12-17 16:08:30,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:28" (2/3) ... [2021-12-17 16:08:30,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373a5093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:08:30, skipping insertion in model container [2021-12-17 16:08:30,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:08:30" (3/3) ... [2021-12-17 16:08:30,329 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-17 16:08:30,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:08:30,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-17 16:08:30,369 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:08:30,374 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 [2021-12-17 16:08:30,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-17 16:08:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 1254 states, 1247 states have (on average 1.8043303929430634) internal successors, (2250), 1253 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-17 16:08:30,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:30,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:30,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:30,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:30,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1061871762, now seen corresponding path program 1 times [2021-12-17 16:08:30,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080362815] [2021-12-17 16:08:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:30,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:30,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:30,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080362815] [2021-12-17 16:08:30,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080362815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:30,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:30,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:08:30,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968735199] [2021-12-17 16:08:30,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:30,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:30,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:30,671 INFO L87 Difference]: Start difference. First operand has 1254 states, 1247 states have (on average 1.8043303929430634) internal successors, (2250), 1253 states have internal predecessors, (2250), 0 states have call successors, (0), 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 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:31,782 INFO L93 Difference]: Finished difference Result 2475 states and 4331 transitions. [2021-12-17 16:08:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-17 16:08:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:31,798 INFO L225 Difference]: With dead ends: 2475 [2021-12-17 16:08:31,798 INFO L226 Difference]: Without dead ends: 1558 [2021-12-17 16:08:31,803 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 [2021-12-17 16:08:31,806 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 7003 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7003 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:31,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7003 Valid, 1499 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:08:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-12-17 16:08:31,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1552. [2021-12-17 16:08:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1546 states have (on average 1.3544631306597672) internal successors, (2094), 1551 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2094 transitions. [2021-12-17 16:08:31,925 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2094 transitions. Word has length 51 [2021-12-17 16:08:31,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:31,925 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2094 transitions. [2021-12-17 16:08:31,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:31,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2094 transitions. [2021-12-17 16:08:31,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 16:08:31,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:31,929 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] [2021-12-17 16:08:31,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:08:31,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1625759521, now seen corresponding path program 1 times [2021-12-17 16:08:31,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:31,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800237568] [2021-12-17 16:08:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:31,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:32,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:32,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800237568] [2021-12-17 16:08:32,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800237568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:32,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:32,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:08:32,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642020386] [2021-12-17 16:08:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:32,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:32,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:32,019 INFO L87 Difference]: Start difference. First operand 1552 states and 2094 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) [2021-12-17 16:08:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:32,794 INFO L93 Difference]: Finished difference Result 3181 states and 4350 transitions. [2021-12-17 16:08:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:32,794 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 [2021-12-17 16:08:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:32,800 INFO L225 Difference]: With dead ends: 3181 [2021-12-17 16:08:32,800 INFO L226 Difference]: Without dead ends: 2197 [2021-12-17 16:08:32,802 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 [2021-12-17 16:08:32,803 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 5040 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:32,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 1030 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:08:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2021-12-17 16:08:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2185. [2021-12-17 16:08:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 2179 states have (on average 1.3740247820100964) internal successors, (2994), 2184 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2994 transitions. [2021-12-17 16:08:32,871 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2994 transitions. Word has length 52 [2021-12-17 16:08:32,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:32,872 INFO L470 AbstractCegarLoop]: Abstraction has 2185 states and 2994 transitions. [2021-12-17 16:08:32,872 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) [2021-12-17 16:08:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2994 transitions. [2021-12-17 16:08:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 16:08:32,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:32,876 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] [2021-12-17 16:08:32,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:08:32,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 299183278, now seen corresponding path program 1 times [2021-12-17 16:08:32,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:32,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19403780] [2021-12-17 16:08:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:32,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:32,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:32,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19403780] [2021-12-17 16:08:32,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19403780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:32,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:32,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:08:32,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619092436] [2021-12-17 16:08:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:32,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:32,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:32,953 INFO L87 Difference]: Start difference. First operand 2185 states and 2994 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) [2021-12-17 16:08:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:33,677 INFO L93 Difference]: Finished difference Result 4530 states and 6290 transitions. [2021-12-17 16:08:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:33,678 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 [2021-12-17 16:08:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:33,688 INFO L225 Difference]: With dead ends: 4530 [2021-12-17 16:08:33,688 INFO L226 Difference]: Without dead ends: 3051 [2021-12-17 16:08:33,692 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 [2021-12-17 16:08:33,692 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 4459 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:33,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4459 Valid, 884 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:08:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-12-17 16:08:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3041. [2021-12-17 16:08:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 3035 states have (on average 1.3759472817133442) internal successors, (4176), 3040 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4176 transitions. [2021-12-17 16:08:33,820 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4176 transitions. Word has length 52 [2021-12-17 16:08:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:33,820 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 4176 transitions. [2021-12-17 16:08:33,821 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) [2021-12-17 16:08:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4176 transitions. [2021-12-17 16:08:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-17 16:08:33,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:33,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:33,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:08:33,824 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)] === [2021-12-17 16:08:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:33,825 INFO L85 PathProgramCache]: Analyzing trace with hash 448762372, now seen corresponding path program 1 times [2021-12-17 16:08:33,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:33,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452317751] [2021-12-17 16:08:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:33,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:33,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:33,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452317751] [2021-12-17 16:08:33,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452317751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:33,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:33,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:08:33,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412319475] [2021-12-17 16:08:33,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:33,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:08:33,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:33,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:08:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:08:33,950 INFO L87 Difference]: Start difference. First operand 3041 states and 4176 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:36,084 INFO L93 Difference]: Finished difference Result 6107 states and 8640 transitions. [2021-12-17 16:08:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:08:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-17 16:08:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:36,101 INFO L225 Difference]: With dead ends: 6107 [2021-12-17 16:08:36,102 INFO L226 Difference]: Without dead ends: 5550 [2021-12-17 16:08:36,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:08:36,105 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 5761 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 4097 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5761 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 4097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:36,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5761 Valid, 3802 Invalid, 4295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 4097 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 16:08:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2021-12-17 16:08:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 3041. [2021-12-17 16:08:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 3035 states have (on average 1.3756177924217463) internal successors, (4175), 3040 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4175 transitions. [2021-12-17 16:08:36,217 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4175 transitions. Word has length 53 [2021-12-17 16:08:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:36,217 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 4175 transitions. [2021-12-17 16:08:36,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4175 transitions. [2021-12-17 16:08:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-17 16:08:36,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:36,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:36,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:08:36,220 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)] === [2021-12-17 16:08:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash 303472925, now seen corresponding path program 1 times [2021-12-17 16:08:36,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:36,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158072173] [2021-12-17 16:08:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:36,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:36,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:36,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158072173] [2021-12-17 16:08:36,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158072173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:36,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:36,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:08:36,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137105264] [2021-12-17 16:08:36,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:36,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:08:36,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:36,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:08:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:08:36,327 INFO L87 Difference]: Start difference. First operand 3041 states and 4175 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:38,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:38,058 INFO L93 Difference]: Finished difference Result 5649 states and 8004 transitions. [2021-12-17 16:08:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:08:38,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-17 16:08:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:38,076 INFO L225 Difference]: With dead ends: 5649 [2021-12-17 16:08:38,077 INFO L226 Difference]: Without dead ends: 5644 [2021-12-17 16:08:38,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-17 16:08:38,078 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 4448 mSDsluCounter, 2798 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:38,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4448 Valid, 3459 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:08:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2021-12-17 16:08:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 3041. [2021-12-17 16:08:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 3035 states have (on average 1.3752883031301482) internal successors, (4174), 3040 states have internal predecessors, (4174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4174 transitions. [2021-12-17 16:08:38,196 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4174 transitions. Word has length 53 [2021-12-17 16:08:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:38,197 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 4174 transitions. [2021-12-17 16:08:38,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4174 transitions. [2021-12-17 16:08:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-17 16:08:38,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:38,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:38,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:08:38,203 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)] === [2021-12-17 16:08:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1162103691, now seen corresponding path program 1 times [2021-12-17 16:08:38,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:38,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402001651] [2021-12-17 16:08:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:38,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:38,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:38,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402001651] [2021-12-17 16:08:38,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402001651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:38,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:38,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:08:38,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225125331] [2021-12-17 16:08:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:38,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:08:38,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:08:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:08:38,281 INFO L87 Difference]: Start difference. First operand 3041 states and 4174 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:39,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:39,592 INFO L93 Difference]: Finished difference Result 5101 states and 7239 transitions. [2021-12-17 16:08:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:08:39,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-17 16:08:39,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:39,605 INFO L225 Difference]: With dead ends: 5101 [2021-12-17 16:08:39,605 INFO L226 Difference]: Without dead ends: 4430 [2021-12-17 16:08:39,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:08:39,611 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 5721 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5721 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:39,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5721 Valid, 3000 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 16:08:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2021-12-17 16:08:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 3041. [2021-12-17 16:08:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 3035 states have (on average 1.3749588138385502) internal successors, (4173), 3040 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4173 transitions. [2021-12-17 16:08:39,724 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4173 transitions. Word has length 53 [2021-12-17 16:08:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:39,724 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 4173 transitions. [2021-12-17 16:08:39,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4173 transitions. [2021-12-17 16:08:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:08:39,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:39,727 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] [2021-12-17 16:08:39,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:08:39,727 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash -482264145, now seen corresponding path program 1 times [2021-12-17 16:08:39,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:39,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082897981] [2021-12-17 16:08:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:39,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:39,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:39,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082897981] [2021-12-17 16:08:39,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082897981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:39,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:39,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:39,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496197051] [2021-12-17 16:08:39,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:39,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:39,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:39,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:39,772 INFO L87 Difference]: Start difference. First operand 3041 states and 4173 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:39,905 INFO L93 Difference]: Finished difference Result 3997 states and 5638 transitions. [2021-12-17 16:08:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:08:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:39,928 INFO L225 Difference]: With dead ends: 3997 [2021-12-17 16:08:39,929 INFO L226 Difference]: Without dead ends: 3094 [2021-12-17 16:08:39,931 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 [2021-12-17 16:08:39,932 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 579 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:39,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 1785 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:39,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-12-17 16:08:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3092. [2021-12-17 16:08:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3086 states have (on average 1.3833441348023332) internal successors, (4269), 3091 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4269 transitions. [2021-12-17 16:08:40,079 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4269 transitions. Word has length 54 [2021-12-17 16:08:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:40,080 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 4269 transitions. [2021-12-17 16:08:40,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4269 transitions. [2021-12-17 16:08:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:08:40,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:40,083 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] [2021-12-17 16:08:40,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:08:40,084 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)] === [2021-12-17 16:08:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1622556323, now seen corresponding path program 1 times [2021-12-17 16:08:40,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:40,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242631380] [2021-12-17 16:08:40,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:40,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:40,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:40,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242631380] [2021-12-17 16:08:40,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242631380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:40,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:40,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:40,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123143937] [2021-12-17 16:08:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:40,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:40,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:40,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:40,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:40,133 INFO L87 Difference]: Start difference. First operand 3092 states and 4269 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:40,329 INFO L93 Difference]: Finished difference Result 4733 states and 6803 transitions. [2021-12-17 16:08:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:40,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:08:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:40,335 INFO L225 Difference]: With dead ends: 4733 [2021-12-17 16:08:40,335 INFO L226 Difference]: Without dead ends: 3514 [2021-12-17 16:08:40,337 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 [2021-12-17 16:08:40,337 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 577 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:40,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 1736 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:08:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2021-12-17 16:08:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3512. [2021-12-17 16:08:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3512 states, 3506 states have (on average 1.4110096976611524) internal successors, (4947), 3511 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 4947 transitions. [2021-12-17 16:08:40,489 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 4947 transitions. Word has length 54 [2021-12-17 16:08:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:40,489 INFO L470 AbstractCegarLoop]: Abstraction has 3512 states and 4947 transitions. [2021-12-17 16:08:40,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 4947 transitions. [2021-12-17 16:08:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:08:40,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:40,492 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] [2021-12-17 16:08:40,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:08:40,492 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1612308197, now seen corresponding path program 1 times [2021-12-17 16:08:40,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:40,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628365263] [2021-12-17 16:08:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:40,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:40,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:40,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628365263] [2021-12-17 16:08:40,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628365263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:40,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:40,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:40,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270328534] [2021-12-17 16:08:40,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:40,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:40,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:40,523 INFO L87 Difference]: Start difference. First operand 3512 states and 4947 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:40,778 INFO L93 Difference]: Finished difference Result 7801 states and 11245 transitions. [2021-12-17 16:08:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:40,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:08:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:40,787 INFO L225 Difference]: With dead ends: 7801 [2021-12-17 16:08:40,787 INFO L226 Difference]: Without dead ends: 5349 [2021-12-17 16:08:40,790 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 [2021-12-17 16:08:40,791 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 649 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:40,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1961 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:08:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-12-17 16:08:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 5343. [2021-12-17 16:08:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 5337 states have (on average 1.405283867341203) internal successors, (7500), 5342 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 7500 transitions. [2021-12-17 16:08:41,035 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 7500 transitions. Word has length 54 [2021-12-17 16:08:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 5343 states and 7500 transitions. [2021-12-17 16:08:41,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 7500 transitions. [2021-12-17 16:08:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-17 16:08:41,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:41,039 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] [2021-12-17 16:08:41,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:08:41,039 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)] === [2021-12-17 16:08:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:41,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1623263409, now seen corresponding path program 1 times [2021-12-17 16:08:41,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:41,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666760868] [2021-12-17 16:08:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:41,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:41,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:41,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666760868] [2021-12-17 16:08:41,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666760868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:41,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:41,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:41,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320500071] [2021-12-17 16:08:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:41,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:41,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:41,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:41,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:41,079 INFO L87 Difference]: Start difference. First operand 5343 states and 7500 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) [2021-12-17 16:08:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:41,406 INFO L93 Difference]: Finished difference Result 9822 states and 14011 transitions. [2021-12-17 16:08:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:41,407 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 [2021-12-17 16:08:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:41,417 INFO L225 Difference]: With dead ends: 9822 [2021-12-17 16:08:41,417 INFO L226 Difference]: Without dead ends: 5548 [2021-12-17 16:08:41,423 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 [2021-12-17 16:08:41,423 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 848 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:41,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 1285 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:08:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2021-12-17 16:08:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 4450. [2021-12-17 16:08:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4445 states have (on average 1.4213723284589426) internal successors, (6318), 4449 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 6318 transitions. [2021-12-17 16:08:41,634 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 6318 transitions. Word has length 55 [2021-12-17 16:08:41,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:41,634 INFO L470 AbstractCegarLoop]: Abstraction has 4450 states and 6318 transitions. [2021-12-17 16:08:41,634 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) [2021-12-17 16:08:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 6318 transitions. [2021-12-17 16:08:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-17 16:08:41,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:41,636 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] [2021-12-17 16:08:41,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:08:41,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1493102210, now seen corresponding path program 1 times [2021-12-17 16:08:41,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:41,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127205108] [2021-12-17 16:08:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:41,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:41,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:41,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127205108] [2021-12-17 16:08:41,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127205108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:41,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:41,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:41,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90593947] [2021-12-17 16:08:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:41,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:41,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:41,662 INFO L87 Difference]: Start difference. First operand 4450 states and 6318 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) [2021-12-17 16:08:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:41,918 INFO L93 Difference]: Finished difference Result 8479 states and 12251 transitions. [2021-12-17 16:08:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:41,919 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 [2021-12-17 16:08:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:41,925 INFO L225 Difference]: With dead ends: 8479 [2021-12-17 16:08:41,925 INFO L226 Difference]: Without dead ends: 4773 [2021-12-17 16:08:41,928 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 [2021-12-17 16:08:41,928 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 659 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:41,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 1016 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:08:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2021-12-17 16:08:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 3845. [2021-12-17 16:08:42,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3841 states have (on average 1.4308773756834159) internal successors, (5496), 3844 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5496 transitions. [2021-12-17 16:08:42,087 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5496 transitions. Word has length 55 [2021-12-17 16:08:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:42,088 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 5496 transitions. [2021-12-17 16:08:42,088 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) [2021-12-17 16:08:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5496 transitions. [2021-12-17 16:08:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-17 16:08:42,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:42,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:42,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:08:42,090 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:42,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1419432604, now seen corresponding path program 1 times [2021-12-17 16:08:42,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:42,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326550226] [2021-12-17 16:08:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:42,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:42,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326550226] [2021-12-17 16:08:42,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326550226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:42,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:42,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:42,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624082977] [2021-12-17 16:08:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:42,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:42,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:42,113 INFO L87 Difference]: Start difference. First operand 3845 states and 5496 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) [2021-12-17 16:08:42,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:42,342 INFO L93 Difference]: Finished difference Result 7664 states and 11130 transitions. [2021-12-17 16:08:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:42,342 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 [2021-12-17 16:08:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:42,348 INFO L225 Difference]: With dead ends: 7664 [2021-12-17 16:08:42,348 INFO L226 Difference]: Without dead ends: 4134 [2021-12-17 16:08:42,352 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 [2021-12-17 16:08:42,352 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 460 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:42,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 845 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2021-12-17 16:08:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3399. [2021-12-17 16:08:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3395 states have (on average 1.4435935198821797) internal successors, (4901), 3398 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 4901 transitions. [2021-12-17 16:08:42,527 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 4901 transitions. Word has length 55 [2021-12-17 16:08:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:42,527 INFO L470 AbstractCegarLoop]: Abstraction has 3399 states and 4901 transitions. [2021-12-17 16:08:42,527 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) [2021-12-17 16:08:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 4901 transitions. [2021-12-17 16:08:42,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-17 16:08:42,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:42,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:42,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:08:42,528 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:42,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:42,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1871407914, now seen corresponding path program 1 times [2021-12-17 16:08:42,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:42,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57620009] [2021-12-17 16:08:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:42,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:42,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57620009] [2021-12-17 16:08:42,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57620009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:42,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:42,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:08:42,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416133512] [2021-12-17 16:08:42,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:42,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:08:42,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:08:42,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:08:42,779 INFO L87 Difference]: Start difference. First operand 3399 states and 4901 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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) [2021-12-17 16:08:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:44,881 INFO L93 Difference]: Finished difference Result 12070 states and 17524 transitions. [2021-12-17 16:08:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 16:08:44,882 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 [2021-12-17 16:08:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:44,899 INFO L225 Difference]: With dead ends: 12070 [2021-12-17 16:08:44,899 INFO L226 Difference]: Without dead ends: 11922 [2021-12-17 16:08:44,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:08:44,903 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 5075 mSDsluCounter, 5037 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5075 SdHoareTripleChecker+Valid, 5805 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:44,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5075 Valid, 5805 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:08:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2021-12-17 16:08:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 3347. [2021-12-17 16:08:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3344 states have (on average 1.444078947368421) internal successors, (4829), 3346 states have internal predecessors, (4829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 4829 transitions. [2021-12-17 16:08:45,151 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 4829 transitions. Word has length 56 [2021-12-17 16:08:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:45,151 INFO L470 AbstractCegarLoop]: Abstraction has 3347 states and 4829 transitions. [2021-12-17 16:08:45,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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) [2021-12-17 16:08:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 4829 transitions. [2021-12-17 16:08:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-17 16:08:45,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:45,153 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] [2021-12-17 16:08:45,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:08:45,153 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1094868748, now seen corresponding path program 1 times [2021-12-17 16:08:45,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:45,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280528944] [2021-12-17 16:08:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:45,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:45,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:45,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280528944] [2021-12-17 16:08:45,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280528944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:45,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:45,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:08:45,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680912087] [2021-12-17 16:08:45,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:45,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 16:08:45,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 16:08:45,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:08:45,337 INFO L87 Difference]: Start difference. First operand 3347 states and 4829 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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) [2021-12-17 16:08:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:46,666 INFO L93 Difference]: Finished difference Result 7183 states and 10436 transitions. [2021-12-17 16:08:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:08:46,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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 [2021-12-17 16:08:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:46,674 INFO L225 Difference]: With dead ends: 7183 [2021-12-17 16:08:46,674 INFO L226 Difference]: Without dead ends: 7039 [2021-12-17 16:08:46,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-12-17 16:08:46,676 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 3008 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3008 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:46,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3008 Valid, 3460 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:08:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2021-12-17 16:08:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 3299. [2021-12-17 16:08:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 3298 states have (on average 1.4460278956943602) internal successors, (4769), 3298 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4769 transitions. [2021-12-17 16:08:46,941 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4769 transitions. Word has length 56 [2021-12-17 16:08:46,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:46,941 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4769 transitions. [2021-12-17 16:08:46,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 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) [2021-12-17 16:08:46,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4769 transitions. [2021-12-17 16:08:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:08:46,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:46,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:46,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:08:46,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash -101338621, now seen corresponding path program 1 times [2021-12-17 16:08:46,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784125315] [2021-12-17 16:08:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:46,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:46,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:46,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784125315] [2021-12-17 16:08:46,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784125315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:46,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:46,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:08:46,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510074234] [2021-12-17 16:08:46,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:46,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:46,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:46,978 INFO L87 Difference]: Start difference. First operand 3299 states and 4769 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:47,616 INFO L93 Difference]: Finished difference Result 10256 states and 15162 transitions. [2021-12-17 16:08:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-17 16:08:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:47,624 INFO L225 Difference]: With dead ends: 10256 [2021-12-17 16:08:47,624 INFO L226 Difference]: Without dead ends: 7534 [2021-12-17 16:08:47,626 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 [2021-12-17 16:08:47,627 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 1628 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:47,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 952 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2021-12-17 16:08:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 5718. [2021-12-17 16:08:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 1.4455133811439567) internal successors, (8264), 5717 states have internal predecessors, (8264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 8264 transitions. [2021-12-17 16:08:48,085 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 8264 transitions. Word has length 63 [2021-12-17 16:08:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:48,086 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 8264 transitions. [2021-12-17 16:08:48,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 8264 transitions. [2021-12-17 16:08:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 16:08:48,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:48,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:48,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:08:48,089 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:08:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash 838129574, now seen corresponding path program 1 times [2021-12-17 16:08:48,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:48,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016771836] [2021-12-17 16:08:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:48,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:48,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:48,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016771836] [2021-12-17 16:08:48,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016771836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:48,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:48,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:08:48,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759176120] [2021-12-17 16:08:48,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:48,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:48,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:48,146 INFO L87 Difference]: Start difference. First operand 5718 states and 8264 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:48,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:48,668 INFO L93 Difference]: Finished difference Result 9724 states and 14141 transitions. [2021-12-17 16:08:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:48,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-17 16:08:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:48,674 INFO L225 Difference]: With dead ends: 9724 [2021-12-17 16:08:48,674 INFO L226 Difference]: Without dead ends: 4562 [2021-12-17 16:08:48,678 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 [2021-12-17 16:08:48,679 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 617 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:48,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 926 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:08:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2021-12-17 16:08:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 4558. [2021-12-17 16:08:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4558 states, 4557 states have (on average 1.4318630678077682) internal successors, (6525), 4557 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4558 states to 4558 states and 6525 transitions. [2021-12-17 16:08:49,070 INFO L78 Accepts]: Start accepts. Automaton has 4558 states and 6525 transitions. Word has length 64 [2021-12-17 16:08:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:49,070 INFO L470 AbstractCegarLoop]: Abstraction has 4558 states and 6525 transitions. [2021-12-17 16:08:49,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4558 states and 6525 transitions. [2021-12-17 16:08:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:08:49,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:49,072 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] [2021-12-17 16:08:49,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:08:49,073 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)] === [2021-12-17 16:08:49,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:49,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1809556404, now seen corresponding path program 1 times [2021-12-17 16:08:49,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:49,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699037664] [2021-12-17 16:08:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:49,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:49,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:49,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699037664] [2021-12-17 16:08:49,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699037664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:49,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:49,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:49,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145722691] [2021-12-17 16:08:49,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:49,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:49,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:49,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:49,101 INFO L87 Difference]: Start difference. First operand 4558 states and 6525 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) [2021-12-17 16:08:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:49,818 INFO L93 Difference]: Finished difference Result 12182 states and 17659 transitions. [2021-12-17 16:08:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:49,818 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 [2021-12-17 16:08:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:49,827 INFO L225 Difference]: With dead ends: 12182 [2021-12-17 16:08:49,827 INFO L226 Difference]: Without dead ends: 8158 [2021-12-17 16:08:49,831 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 [2021-12-17 16:08:49,831 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 298 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:49,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 782 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2021-12-17 16:08:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 7644. [2021-12-17 16:08:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7644 states, 7643 states have (on average 1.4353002747612194) internal successors, (10970), 7643 states have internal predecessors, (10970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 10970 transitions. [2021-12-17 16:08:50,500 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 10970 transitions. Word has length 66 [2021-12-17 16:08:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:50,500 INFO L470 AbstractCegarLoop]: Abstraction has 7644 states and 10970 transitions. [2021-12-17 16:08:50,500 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) [2021-12-17 16:08:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 10970 transitions. [2021-12-17 16:08:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:08:50,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:50,502 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] [2021-12-17 16:08:50,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:08:50,502 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)] === [2021-12-17 16:08:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash 827517135, now seen corresponding path program 1 times [2021-12-17 16:08:50,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:50,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292143653] [2021-12-17 16:08:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:50,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:50,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:50,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292143653] [2021-12-17 16:08:50,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292143653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:50,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:50,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:50,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836936437] [2021-12-17 16:08:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:50,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:50,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:50,530 INFO L87 Difference]: Start difference. First operand 7644 states and 10970 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) [2021-12-17 16:08:51,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:51,982 INFO L93 Difference]: Finished difference Result 21104 states and 30452 transitions. [2021-12-17 16:08:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:51,982 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 [2021-12-17 16:08:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:51,996 INFO L225 Difference]: With dead ends: 21104 [2021-12-17 16:08:51,997 INFO L226 Difference]: Without dead ends: 13994 [2021-12-17 16:08:52,001 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 [2021-12-17 16:08:52,002 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 258 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:52,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 803 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13994 states. [2021-12-17 16:08:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13994 to 12968. [2021-12-17 16:08:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12968 states, 12967 states have (on average 1.4299375337394926) internal successors, (18542), 12967 states have internal predecessors, (18542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12968 states to 12968 states and 18542 transitions. [2021-12-17 16:08:53,206 INFO L78 Accepts]: Start accepts. Automaton has 12968 states and 18542 transitions. Word has length 66 [2021-12-17 16:08:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:53,206 INFO L470 AbstractCegarLoop]: Abstraction has 12968 states and 18542 transitions. [2021-12-17 16:08:53,206 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) [2021-12-17 16:08:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 12968 states and 18542 transitions. [2021-12-17 16:08:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:08:53,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:53,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:53,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:08:53,208 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)] === [2021-12-17 16:08:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1051118849, now seen corresponding path program 1 times [2021-12-17 16:08:53,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:53,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344894762] [2021-12-17 16:08:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:53,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:53,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344894762] [2021-12-17 16:08:53,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344894762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:53,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:53,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:08:53,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22113928] [2021-12-17 16:08:53,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:53,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:08:53,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:53,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:08:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:08:53,255 INFO L87 Difference]: Start difference. First operand 12968 states and 18542 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:56,198 INFO L93 Difference]: Finished difference Result 27429 states and 38624 transitions. [2021-12-17 16:08:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:08:56,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:08:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:56,236 INFO L225 Difference]: With dead ends: 27429 [2021-12-17 16:08:56,236 INFO L226 Difference]: Without dead ends: 27427 [2021-12-17 16:08:56,243 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 [2021-12-17 16:08:56,244 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 588 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:56,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 2187 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27427 states. [2021-12-17 16:08:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27427 to 14072. [2021-12-17 16:08:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14072 states, 14071 states have (on average 1.3962049605571742) internal successors, (19646), 14071 states have internal predecessors, (19646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14072 states to 14072 states and 19646 transitions. [2021-12-17 16:08:57,760 INFO L78 Accepts]: Start accepts. Automaton has 14072 states and 19646 transitions. Word has length 68 [2021-12-17 16:08:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:57,760 INFO L470 AbstractCegarLoop]: Abstraction has 14072 states and 19646 transitions. [2021-12-17 16:08:57,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:57,761 INFO L276 IsEmpty]: Start isEmpty. Operand 14072 states and 19646 transitions. [2021-12-17 16:08:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:08:57,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:57,762 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] [2021-12-17 16:08:57,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:08:57,762 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)] === [2021-12-17 16:08:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1654492608, now seen corresponding path program 1 times [2021-12-17 16:08:57,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:57,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122733518] [2021-12-17 16:08:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:57,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:57,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:57,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122733518] [2021-12-17 16:08:57,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122733518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:57,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:57,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:57,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002609353] [2021-12-17 16:08:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:57,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:57,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:57,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:57,798 INFO L87 Difference]: Start difference. First operand 14072 states and 19646 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2021-12-17 16:09:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:00,685 INFO L93 Difference]: Finished difference Result 38072 states and 53282 transitions. [2021-12-17 16:09:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:09:00,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 [2021-12-17 16:09:00,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:00,718 INFO L225 Difference]: With dead ends: 38072 [2021-12-17 16:09:00,719 INFO L226 Difference]: Without dead ends: 24522 [2021-12-17 16:09:00,738 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 [2021-12-17 16:09:00,739 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 298 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:00,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 720 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24522 states. [2021-12-17 16:09:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24522 to 24152. [2021-12-17 16:09:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24152 states, 24151 states have (on average 1.3715374104591942) internal successors, (33124), 24151 states have internal predecessors, (33124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24152 states to 24152 states and 33124 transitions. [2021-12-17 16:09:03,302 INFO L78 Accepts]: Start accepts. Automaton has 24152 states and 33124 transitions. Word has length 69 [2021-12-17 16:09:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:03,302 INFO L470 AbstractCegarLoop]: Abstraction has 24152 states and 33124 transitions. [2021-12-17 16:09:03,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2021-12-17 16:09:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 24152 states and 33124 transitions. [2021-12-17 16:09:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 16:09:03,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:03,304 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] [2021-12-17 16:09:03,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:09:03,304 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)] === [2021-12-17 16:09:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash -761417871, now seen corresponding path program 1 times [2021-12-17 16:09:03,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:03,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062078343] [2021-12-17 16:09:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:03,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:03,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:03,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062078343] [2021-12-17 16:09:03,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062078343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:03,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:03,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:09:03,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923196174] [2021-12-17 16:09:03,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:03,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:09:03,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:09:03,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:03,348 INFO L87 Difference]: Start difference. First operand 24152 states and 33124 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) [2021-12-17 16:09:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:06,755 INFO L93 Difference]: Finished difference Result 45870 states and 63600 transitions. [2021-12-17 16:09:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:09:06,756 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 [2021-12-17 16:09:06,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:06,813 INFO L225 Difference]: With dead ends: 45870 [2021-12-17 16:09:06,813 INFO L226 Difference]: Without dead ends: 33508 [2021-12-17 16:09:06,837 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 [2021-12-17 16:09:06,839 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 371 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:06,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 640 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:06,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33508 states. [2021-12-17 16:09:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33508 to 33506. [2021-12-17 16:09:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33506 states, 33505 states have (on average 1.3745411132666767) internal successors, (46054), 33505 states have internal predecessors, (46054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33506 states to 33506 states and 46054 transitions. [2021-12-17 16:09:10,770 INFO L78 Accepts]: Start accepts. Automaton has 33506 states and 46054 transitions. Word has length 73 [2021-12-17 16:09:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:10,770 INFO L470 AbstractCegarLoop]: Abstraction has 33506 states and 46054 transitions. [2021-12-17 16:09:10,770 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) [2021-12-17 16:09:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 33506 states and 46054 transitions. [2021-12-17 16:09:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-17 16:09:10,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:10,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:10,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:09:10,774 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)] === [2021-12-17 16:09:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash 324913683, now seen corresponding path program 1 times [2021-12-17 16:09:10,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:10,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031274049] [2021-12-17 16:09:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:10,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:10,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:10,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031274049] [2021-12-17 16:09:10,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031274049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:10,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:10,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:09:10,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122035551] [2021-12-17 16:09:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:10,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:09:10,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:09:10,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:09:10,862 INFO L87 Difference]: Start difference. First operand 33506 states and 46054 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:15,980 INFO L93 Difference]: Finished difference Result 59464 states and 81601 transitions. [2021-12-17 16:09:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:09:15,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-17 16:09:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:16,044 INFO L225 Difference]: With dead ends: 59464 [2021-12-17 16:09:16,044 INFO L226 Difference]: Without dead ends: 46550 [2021-12-17 16:09:16,061 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 [2021-12-17 16:09:16,062 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1040 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:16,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 1209 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46550 states. [2021-12-17 16:09:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46550 to 38106. [2021-12-17 16:09:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38106 states, 38105 states have (on average 1.3671171762235927) internal successors, (52094), 38105 states have internal predecessors, (52094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38106 states to 38106 states and 52094 transitions. [2021-12-17 16:09:20,463 INFO L78 Accepts]: Start accepts. Automaton has 38106 states and 52094 transitions. Word has length 81 [2021-12-17 16:09:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:20,463 INFO L470 AbstractCegarLoop]: Abstraction has 38106 states and 52094 transitions. [2021-12-17 16:09:20,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 38106 states and 52094 transitions. [2021-12-17 16:09:20,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 16:09:20,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:20,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:09:20,468 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)] === [2021-12-17 16:09:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2144075086, now seen corresponding path program 1 times [2021-12-17 16:09:20,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962597313] [2021-12-17 16:09:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:20,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:20,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:20,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962597313] [2021-12-17 16:09:20,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962597313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:20,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:20,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:09:20,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403785735] [2021-12-17 16:09:20,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:20,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:09:20,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:20,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:09:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:09:20,527 INFO L87 Difference]: Start difference. First operand 38106 states and 52094 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:26,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:26,433 INFO L93 Difference]: Finished difference Result 49395 states and 67251 transitions. [2021-12-17 16:09:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:09:26,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-17 16:09:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:26,506 INFO L225 Difference]: With dead ends: 49395 [2021-12-17 16:09:26,507 INFO L226 Difference]: Without dead ends: 47830 [2021-12-17 16:09:26,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:09:26,524 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 2108 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:26,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 661 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:09:26,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47830 states. [2021-12-17 16:09:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47830 to 38101. [2021-12-17 16:09:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38101 states, 38100 states have (on average 1.3670603674540682) internal successors, (52085), 38100 states have internal predecessors, (52085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38101 states to 38101 states and 52085 transitions. [2021-12-17 16:09:31,294 INFO L78 Accepts]: Start accepts. Automaton has 38101 states and 52085 transitions. Word has length 82 [2021-12-17 16:09:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:31,295 INFO L470 AbstractCegarLoop]: Abstraction has 38101 states and 52085 transitions. [2021-12-17 16:09:31,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 38101 states and 52085 transitions. [2021-12-17 16:09:31,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-17 16:09:31,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:31,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:31,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:09:31,303 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)] === [2021-12-17 16:09:31,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1665802254, now seen corresponding path program 1 times [2021-12-17 16:09:31,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:31,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739194958] [2021-12-17 16:09:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:31,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 16:09:31,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:31,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739194958] [2021-12-17 16:09:31,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739194958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:31,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:31,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:09:31,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254255100] [2021-12-17 16:09:31,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:31,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:09:31,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:09:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:09:31,374 INFO L87 Difference]: Start difference. First operand 38101 states and 52085 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:47,501 INFO L93 Difference]: Finished difference Result 146683 states and 198288 transitions. [2021-12-17 16:09:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 16:09:47,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-12-17 16:09:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:47,694 INFO L225 Difference]: With dead ends: 146683 [2021-12-17 16:09:47,694 INFO L226 Difference]: Without dead ends: 119588 [2021-12-17 16:09:47,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2021-12-17 16:09:47,736 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 2297 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:47,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2297 Valid, 1800 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:09:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119588 states. [2021-12-17 16:09:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119588 to 38081. [2021-12-17 16:09:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38081 states, 38080 states have (on average 1.367174369747899) internal successors, (52062), 38080 states have internal predecessors, (52062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38081 states to 38081 states and 52062 transitions. [2021-12-17 16:09:52,952 INFO L78 Accepts]: Start accepts. Automaton has 38081 states and 52062 transitions. Word has length 88 [2021-12-17 16:09:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:52,952 INFO L470 AbstractCegarLoop]: Abstraction has 38081 states and 52062 transitions. [2021-12-17 16:09:52,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 38081 states and 52062 transitions. [2021-12-17 16:09:52,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 16:09:52,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:52,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:52,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:09:52,962 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)] === [2021-12-17 16:09:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:52,962 INFO L85 PathProgramCache]: Analyzing trace with hash 730861950, now seen corresponding path program 1 times [2021-12-17 16:09:52,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:52,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371361631] [2021-12-17 16:09:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:52,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:53,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:53,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371361631] [2021-12-17 16:09:53,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371361631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:53,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:53,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:09:53,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217203740] [2021-12-17 16:09:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:53,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:09:53,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:09:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:09:53,053 INFO L87 Difference]: Start difference. First operand 38081 states and 52062 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:10:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:10:05,599 INFO L93 Difference]: Finished difference Result 106796 states and 143813 transitions. [2021-12-17 16:10:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:10:05,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-12-17 16:10:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:10:05,732 INFO L225 Difference]: With dead ends: 106796 [2021-12-17 16:10:05,732 INFO L226 Difference]: Without dead ends: 79722 [2021-12-17 16:10:05,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:10:05,780 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 2277 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:10:05,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 1739 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:10:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79722 states. [2021-12-17 16:10:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79722 to 38555. [2021-12-17 16:10:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38555 states, 38554 states have (on average 1.3656429942418427) internal successors, (52651), 38554 states have internal predecessors, (52651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:10:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38555 states to 38555 states and 52651 transitions. [2021-12-17 16:10:11,491 INFO L78 Accepts]: Start accepts. Automaton has 38555 states and 52651 transitions. Word has length 89 [2021-12-17 16:10:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:10:11,491 INFO L470 AbstractCegarLoop]: Abstraction has 38555 states and 52651 transitions. [2021-12-17 16:10:11,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:10:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 38555 states and 52651 transitions. [2021-12-17 16:10:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 16:10:11,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:10:11,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:10:11,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:10:11,502 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:10:11,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:10:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash -167089379, now seen corresponding path program 1 times [2021-12-17 16:10:11,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:10:11,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075767003] [2021-12-17 16:10:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:10:11,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:10:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:10:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 16:10:11,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:10:11,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075767003] [2021-12-17 16:10:11,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075767003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:10:11,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:10:11,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:10:11,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94434742] [2021-12-17 16:10:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:10:11,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:10:11,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:10:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:10:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:10:11,580 INFO L87 Difference]: Start difference. First operand 38555 states and 52651 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)