./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-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 be26aee373dea132861f472d332ff07e499ea6fa9932dcbe3fa1a7df50848fdc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:36:05,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:36:05,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:36:05,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:36:05,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:36:05,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:36:05,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:36:05,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:36:05,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:36:05,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:36:05,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:36:05,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:36:05,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:36:05,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:36:05,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:36:05,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:36:05,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:36:05,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:36:05,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:36:05,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:36:05,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:36:05,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:36:05,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:36:05,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:36:05,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:36:05,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:36:05,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:36:05,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:36:05,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:36:05,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:36:05,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:36:05,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:36:05,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:36:05,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:36:05,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:36:05,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:36:05,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:36:05,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:36:05,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:36:05,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:36:05,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:36:05,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:36:05,194 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:36:05,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:36:05,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:36:05,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:36:05,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:36:05,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:36:05,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:36:05,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:36:05,198 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:36:05,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:36:05,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:36:05,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:36:05,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:36:05,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:36:05,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:36:05,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:36:05,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:36:05,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:36:05,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:36:05,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:36:05,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:36:05,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:36:05,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:36:05,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:36:05,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:36:05,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:36:05,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:36:05,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:36:05,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:36:05,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:36:05,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:36:05,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:36:05,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:36:05,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be26aee373dea132861f472d332ff07e499ea6fa9932dcbe3fa1a7df50848fdc [2021-12-28 01:36:05,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:36:05,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:36:05,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:36:05,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:36:05,454 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:36:05,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-28 01:36:05,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44840cab/92f561c58a3f481daae851001ff0839d/FLAGc6381b817 [2021-12-28 01:36:05,900 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:36:05,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-28 01:36:05,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44840cab/92f561c58a3f481daae851001ff0839d/FLAGc6381b817 [2021-12-28 01:36:06,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44840cab/92f561c58a3f481daae851001ff0839d [2021-12-28 01:36:06,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:36:06,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:36:06,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:36:06,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:36:06,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:36:06,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc560da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06, skipping insertion in model container [2021-12-28 01:36:06,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:36:06,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:36:06,515 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15187,15200] [2021-12-28 01:36:06,527 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15834,15847] [2021-12-28 01:36:06,535 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17175,17188] [2021-12-28 01:36:06,553 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18235,18248] [2021-12-28 01:36:06,585 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27520,27533] [2021-12-28 01:36:06,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:36:06,630 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:36:06,682 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15187,15200] [2021-12-28 01:36:06,686 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15834,15847] [2021-12-28 01:36:06,699 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17175,17188] [2021-12-28 01:36:06,704 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18235,18248] [2021-12-28 01:36:06,729 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27520,27533] [2021-12-28 01:36:06,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:36:06,774 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:36:06,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06 WrapperNode [2021-12-28 01:36:06,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:36:06,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:36:06,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:36:06,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:36:06,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,878 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1659 [2021-12-28 01:36:06,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:36:06,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:36:06,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:36:06,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:36:06,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:36:06,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:36:06,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:36:06,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:36:06,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (1/1) ... [2021-12-28 01:36:06,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:36:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:36:06,969 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) [2021-12-28 01:36:06,984 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 [2021-12-28 01:36:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:36:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:36:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:36:06,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:36:07,138 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:36:07,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:36:07,883 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:36:07,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:36:07,896 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:36:07,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:36:07 BoogieIcfgContainer [2021-12-28 01:36:07,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:36:07,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:36:07,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:36:07,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:36:07,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:36:06" (1/3) ... [2021-12-28 01:36:07,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5832fd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:36:07, skipping insertion in model container [2021-12-28 01:36:07,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:36:06" (2/3) ... [2021-12-28 01:36:07,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5832fd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:36:07, skipping insertion in model container [2021-12-28 01:36:07,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:36:07" (3/3) ... [2021-12-28 01:36:07,904 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-28 01:36:07,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:36:07,908 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-28 01:36:07,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:36:07,957 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 [2021-12-28 01:36:07,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-28 01:36:07,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 400 states, 394 states have (on average 1.8121827411167513) internal successors, (714), 399 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 01:36:08,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:08,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:08,010 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1495225560, now seen corresponding path program 1 times [2021-12-28 01:36:08,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266796366] [2021-12-28 01:36:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:08,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:08,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266796366] [2021-12-28 01:36:08,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266796366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:08,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:08,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:36:08,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945307523] [2021-12-28 01:36:08,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:08,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:36:08,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:36:08,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:36:08,478 INFO L87 Difference]: Start difference. First operand has 400 states, 394 states have (on average 1.8121827411167513) internal successors, (714), 399 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:08,649 INFO L93 Difference]: Finished difference Result 737 states and 1302 transitions. [2021-12-28 01:36:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:36:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-28 01:36:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:08,661 INFO L225 Difference]: With dead ends: 737 [2021-12-28 01:36:08,661 INFO L226 Difference]: Without dead ends: 603 [2021-12-28 01:36:08,663 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 [2021-12-28 01:36:08,665 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 437 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:08,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1272 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:36:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-12-28 01:36:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2021-12-28 01:36:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 596 states have (on average 1.4815436241610738) internal successors, (883), 600 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 883 transitions. [2021-12-28 01:36:08,725 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 883 transitions. Word has length 145 [2021-12-28 01:36:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:08,725 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 883 transitions. [2021-12-28 01:36:08,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 883 transitions. [2021-12-28 01:36:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 01:36:08,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:08,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:08,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:36:08,731 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1494794584, now seen corresponding path program 1 times [2021-12-28 01:36:08,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:08,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244920034] [2021-12-28 01:36:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:08,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:08,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:08,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244920034] [2021-12-28 01:36:08,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244920034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:08,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:08,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:36:08,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131392170] [2021-12-28 01:36:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:08,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:36:08,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:36:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:36:08,953 INFO L87 Difference]: Start difference. First operand 601 states and 883 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:09,067 INFO L93 Difference]: Finished difference Result 1766 states and 2586 transitions. [2021-12-28 01:36:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:36:09,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-28 01:36:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:09,073 INFO L225 Difference]: With dead ends: 1766 [2021-12-28 01:36:09,073 INFO L226 Difference]: Without dead ends: 1174 [2021-12-28 01:36:09,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:09,078 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 1222 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:09,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 1451 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-12-28 01:36:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1134. [2021-12-28 01:36:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1129 states have (on average 1.4720992028343667) internal successors, (1662), 1133 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1662 transitions. [2021-12-28 01:36:09,146 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1662 transitions. Word has length 145 [2021-12-28 01:36:09,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:09,148 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1662 transitions. [2021-12-28 01:36:09,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1662 transitions. [2021-12-28 01:36:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-28 01:36:09,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:09,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:09,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:36:09,154 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1642675868, now seen corresponding path program 1 times [2021-12-28 01:36:09,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:09,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631259733] [2021-12-28 01:36:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:09,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:09,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:09,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631259733] [2021-12-28 01:36:09,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631259733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:09,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:09,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:36:09,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486161848] [2021-12-28 01:36:09,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:09,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:36:09,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:36:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:36:09,219 INFO L87 Difference]: Start difference. First operand 1134 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:09,321 INFO L93 Difference]: Finished difference Result 3364 states and 4924 transitions. [2021-12-28 01:36:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:36:09,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2021-12-28 01:36:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:09,330 INFO L225 Difference]: With dead ends: 3364 [2021-12-28 01:36:09,331 INFO L226 Difference]: Without dead ends: 2258 [2021-12-28 01:36:09,333 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 [2021-12-28 01:36:09,335 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 559 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:09,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 1397 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2021-12-28 01:36:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1136. [2021-12-28 01:36:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1131 states have (on average 1.471264367816092) internal successors, (1664), 1135 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1664 transitions. [2021-12-28 01:36:09,411 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1664 transitions. Word has length 146 [2021-12-28 01:36:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:09,412 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1664 transitions. [2021-12-28 01:36:09,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1664 transitions. [2021-12-28 01:36:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-28 01:36:09,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:09,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:09,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:36:09,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash -341862217, now seen corresponding path program 1 times [2021-12-28 01:36:09,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:09,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030604334] [2021-12-28 01:36:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:09,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:09,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:09,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030604334] [2021-12-28 01:36:09,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030604334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:09,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:09,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:36:09,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477671344] [2021-12-28 01:36:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:09,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:36:09,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:36:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:36:09,551 INFO L87 Difference]: Start difference. First operand 1136 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:09,722 INFO L93 Difference]: Finished difference Result 3294 states and 4804 transitions. [2021-12-28 01:36:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:36:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2021-12-28 01:36:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:09,729 INFO L225 Difference]: With dead ends: 3294 [2021-12-28 01:36:09,730 INFO L226 Difference]: Without dead ends: 2188 [2021-12-28 01:36:09,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:09,732 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 1127 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:09,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 1497 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2021-12-28 01:36:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2148. [2021-12-28 01:36:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2143 states have (on average 1.4563695753616426) internal successors, (3121), 2147 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3121 transitions. [2021-12-28 01:36:09,844 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3121 transitions. Word has length 147 [2021-12-28 01:36:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:09,845 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 3121 transitions. [2021-12-28 01:36:09,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:09,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3121 transitions. [2021-12-28 01:36:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-28 01:36:09,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:09,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:09,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:36:09,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:09,848 INFO L85 PathProgramCache]: Analyzing trace with hash -396436125, now seen corresponding path program 1 times [2021-12-28 01:36:09,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:09,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155072532] [2021-12-28 01:36:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:09,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:09,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:09,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155072532] [2021-12-28 01:36:09,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155072532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:09,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:09,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:36:09,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311212129] [2021-12-28 01:36:09,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:09,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:36:09,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:09,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:36:09,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:36:09,878 INFO L87 Difference]: Start difference. First operand 2148 states and 3121 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:10,076 INFO L93 Difference]: Finished difference Result 6368 states and 9243 transitions. [2021-12-28 01:36:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:36:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-12-28 01:36:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:10,088 INFO L225 Difference]: With dead ends: 6368 [2021-12-28 01:36:10,088 INFO L226 Difference]: Without dead ends: 4264 [2021-12-28 01:36:10,090 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 [2021-12-28 01:36:10,091 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 545 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:10,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1262 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-12-28 01:36:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 2152. [2021-12-28 01:36:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2147 states have (on average 1.455519329296693) internal successors, (3125), 2151 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:10,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3125 transitions. [2021-12-28 01:36:10,226 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3125 transitions. Word has length 148 [2021-12-28 01:36:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:10,226 INFO L470 AbstractCegarLoop]: Abstraction has 2152 states and 3125 transitions. [2021-12-28 01:36:10,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3125 transitions. [2021-12-28 01:36:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 01:36:10,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:10,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:10,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:36:10,230 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1864651882, now seen corresponding path program 1 times [2021-12-28 01:36:10,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:10,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154748392] [2021-12-28 01:36:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:10,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:10,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:10,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154748392] [2021-12-28 01:36:10,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154748392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:10,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:10,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:36:10,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890013709] [2021-12-28 01:36:10,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:10,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:36:10,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:36:10,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:36:10,327 INFO L87 Difference]: Start difference. First operand 2152 states and 3125 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:10,626 INFO L93 Difference]: Finished difference Result 6244 states and 9035 transitions. [2021-12-28 01:36:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:36:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2021-12-28 01:36:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:10,638 INFO L225 Difference]: With dead ends: 6244 [2021-12-28 01:36:10,639 INFO L226 Difference]: Without dead ends: 4140 [2021-12-28 01:36:10,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:10,644 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 1125 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:10,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 1482 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-12-28 01:36:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 4100. [2021-12-28 01:36:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4095 states have (on average 1.4385836385836386) internal successors, (5891), 4099 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 5891 transitions. [2021-12-28 01:36:10,944 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 5891 transitions. Word has length 149 [2021-12-28 01:36:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:10,944 INFO L470 AbstractCegarLoop]: Abstraction has 4100 states and 5891 transitions. [2021-12-28 01:36:10,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 5891 transitions. [2021-12-28 01:36:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-28 01:36:10,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:10,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:10,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:36:10,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:10,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash -43098910, now seen corresponding path program 1 times [2021-12-28 01:36:10,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:10,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197156001] [2021-12-28 01:36:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:10,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:10,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197156001] [2021-12-28 01:36:10,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197156001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:10,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:10,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:36:10,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334665794] [2021-12-28 01:36:10,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:10,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:36:10,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:36:10,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:36:10,978 INFO L87 Difference]: Start difference. First operand 4100 states and 5891 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:11,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:11,392 INFO L93 Difference]: Finished difference Result 11864 states and 17091 transitions. [2021-12-28 01:36:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:36:11,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-12-28 01:36:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:11,413 INFO L225 Difference]: With dead ends: 11864 [2021-12-28 01:36:11,413 INFO L226 Difference]: Without dead ends: 8108 [2021-12-28 01:36:11,417 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 [2021-12-28 01:36:11,418 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 531 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:11,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1659 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8108 states. [2021-12-28 01:36:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8108 to 4108. [2021-12-28 01:36:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4103 states have (on average 1.4377284913477943) internal successors, (5899), 4107 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 5899 transitions. [2021-12-28 01:36:11,756 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 5899 transitions. Word has length 150 [2021-12-28 01:36:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:11,756 INFO L470 AbstractCegarLoop]: Abstraction has 4108 states and 5899 transitions. [2021-12-28 01:36:11,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 5899 transitions. [2021-12-28 01:36:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 01:36:11,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:11,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:11,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:36:11,761 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash 352323364, now seen corresponding path program 1 times [2021-12-28 01:36:11,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:11,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745148897] [2021-12-28 01:36:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:11,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:11,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:11,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745148897] [2021-12-28 01:36:11,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745148897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:11,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:11,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:36:11,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178761624] [2021-12-28 01:36:11,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:11,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:36:11,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:11,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:36:11,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:11,885 INFO L87 Difference]: Start difference. First operand 4108 states and 5899 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:12,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:12,415 INFO L93 Difference]: Finished difference Result 11938 states and 17074 transitions. [2021-12-28 01:36:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:36:12,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-12-28 01:36:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:12,445 INFO L225 Difference]: With dead ends: 11938 [2021-12-28 01:36:12,446 INFO L226 Difference]: Without dead ends: 7918 [2021-12-28 01:36:12,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:12,453 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 1054 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:12,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 1993 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2021-12-28 01:36:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7878. [2021-12-28 01:36:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 7873 states have (on average 1.4169947923282102) internal successors, (11156), 7877 states have internal predecessors, (11156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 11156 transitions. [2021-12-28 01:36:13,009 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 11156 transitions. Word has length 151 [2021-12-28 01:36:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:13,010 INFO L470 AbstractCegarLoop]: Abstraction has 7878 states and 11156 transitions. [2021-12-28 01:36:13,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 11156 transitions. [2021-12-28 01:36:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-28 01:36:13,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:13,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:13,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:36:13,021 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2046933493, now seen corresponding path program 1 times [2021-12-28 01:36:13,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:13,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073889127] [2021-12-28 01:36:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:13,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:13,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:13,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073889127] [2021-12-28 01:36:13,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073889127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:13,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:13,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:36:13,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128409440] [2021-12-28 01:36:13,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:13,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:36:13,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:36:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:36:13,122 INFO L87 Difference]: Start difference. First operand 7878 states and 11156 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:13,607 INFO L93 Difference]: Finished difference Result 13828 states and 19563 transitions. [2021-12-28 01:36:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:36:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2021-12-28 01:36:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:13,619 INFO L225 Difference]: With dead ends: 13828 [2021-12-28 01:36:13,619 INFO L226 Difference]: Without dead ends: 6024 [2021-12-28 01:36:13,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:13,630 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 65 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:13,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1741 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2021-12-28 01:36:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2021-12-28 01:36:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6019 states have (on average 1.4138561222794483) internal successors, (8510), 6023 states have internal predecessors, (8510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8510 transitions. [2021-12-28 01:36:14,023 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8510 transitions. Word has length 151 [2021-12-28 01:36:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:14,024 INFO L470 AbstractCegarLoop]: Abstraction has 6024 states and 8510 transitions. [2021-12-28 01:36:14,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8510 transitions. [2021-12-28 01:36:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-28 01:36:14,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:14,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:14,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:36:14,030 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash 491709017, now seen corresponding path program 1 times [2021-12-28 01:36:14,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:14,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400889585] [2021-12-28 01:36:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:14,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:14,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:14,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400889585] [2021-12-28 01:36:14,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400889585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:14,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:14,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:36:14,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198320106] [2021-12-28 01:36:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:14,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:36:14,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:36:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:36:14,064 INFO L87 Difference]: Start difference. First operand 6024 states and 8510 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:14,508 INFO L93 Difference]: Finished difference Result 13066 states and 18995 transitions. [2021-12-28 01:36:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:36:14,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2021-12-28 01:36:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:14,521 INFO L225 Difference]: With dead ends: 13066 [2021-12-28 01:36:14,522 INFO L226 Difference]: Without dead ends: 7666 [2021-12-28 01:36:14,528 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 [2021-12-28 01:36:14,529 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 225 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:14,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 1143 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7666 states. [2021-12-28 01:36:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7666 to 7568. [2021-12-28 01:36:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7568 states, 7563 states have (on average 1.4541848472828243) internal successors, (10998), 7567 states have internal predecessors, (10998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7568 states to 7568 states and 10998 transitions. [2021-12-28 01:36:15,022 INFO L78 Accepts]: Start accepts. Automaton has 7568 states and 10998 transitions. Word has length 152 [2021-12-28 01:36:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:15,022 INFO L470 AbstractCegarLoop]: Abstraction has 7568 states and 10998 transitions. [2021-12-28 01:36:15,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7568 states and 10998 transitions. [2021-12-28 01:36:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 01:36:15,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:15,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:15,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:36:15,029 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 587839742, now seen corresponding path program 1 times [2021-12-28 01:36:15,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:15,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978820831] [2021-12-28 01:36:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:15,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:15,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:15,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978820831] [2021-12-28 01:36:15,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978820831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:15,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:15,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:36:15,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028021918] [2021-12-28 01:36:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:15,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 01:36:15,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 01:36:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:36:15,112 INFO L87 Difference]: Start difference. First operand 7568 states and 10998 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:17,070 INFO L93 Difference]: Finished difference Result 22626 states and 34146 transitions. [2021-12-28 01:36:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 01:36:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-12-28 01:36:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:17,097 INFO L225 Difference]: With dead ends: 22626 [2021-12-28 01:36:17,098 INFO L226 Difference]: Without dead ends: 15820 [2021-12-28 01:36:17,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:36:17,106 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 6446 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6446 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:17,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6446 Valid, 1327 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:36:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15820 states. [2021-12-28 01:36:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15820 to 9124. [2021-12-28 01:36:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9124 states, 9119 states have (on average 1.4488430748985635) internal successors, (13212), 9123 states have internal predecessors, (13212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9124 states to 9124 states and 13212 transitions. [2021-12-28 01:36:17,865 INFO L78 Accepts]: Start accepts. Automaton has 9124 states and 13212 transitions. Word has length 155 [2021-12-28 01:36:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:17,865 INFO L470 AbstractCegarLoop]: Abstraction has 9124 states and 13212 transitions. [2021-12-28 01:36:17,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9124 states and 13212 transitions. [2021-12-28 01:36:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-28 01:36:17,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:17,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:17,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:36:17,872 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1193349574, now seen corresponding path program 1 times [2021-12-28 01:36:17,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:17,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703824488] [2021-12-28 01:36:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:17,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:17,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:17,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703824488] [2021-12-28 01:36:17,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703824488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:17,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:17,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:36:17,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752005421] [2021-12-28 01:36:17,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:17,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:36:17,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:36:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:36:17,962 INFO L87 Difference]: Start difference. First operand 9124 states and 13212 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:19,282 INFO L93 Difference]: Finished difference Result 24262 states and 35109 transitions. [2021-12-28 01:36:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:36:19,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2021-12-28 01:36:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:19,306 INFO L225 Difference]: With dead ends: 24262 [2021-12-28 01:36:19,307 INFO L226 Difference]: Without dead ends: 15272 [2021-12-28 01:36:19,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:19,317 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 1121 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:19,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 1439 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2021-12-28 01:36:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 15238. [2021-12-28 01:36:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15238 states, 15233 states have (on average 1.4307096435370577) internal successors, (21794), 15237 states have internal predecessors, (21794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21794 transitions. [2021-12-28 01:36:20,929 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21794 transitions. Word has length 155 [2021-12-28 01:36:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:20,929 INFO L470 AbstractCegarLoop]: Abstraction has 15238 states and 21794 transitions. [2021-12-28 01:36:20,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21794 transitions. [2021-12-28 01:36:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:36:20,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:20,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:20,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 01:36:20,938 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:20,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1194235350, now seen corresponding path program 1 times [2021-12-28 01:36:20,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:20,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647914467] [2021-12-28 01:36:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:20,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:21,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:21,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647914467] [2021-12-28 01:36:21,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647914467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:21,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:21,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:36:21,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103502460] [2021-12-28 01:36:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:21,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:36:21,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:36:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:36:21,016 INFO L87 Difference]: Start difference. First operand 15238 states and 21794 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:22,325 INFO L93 Difference]: Finished difference Result 27768 states and 39815 transitions. [2021-12-28 01:36:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 01:36:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-12-28 01:36:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:22,350 INFO L225 Difference]: With dead ends: 27768 [2021-12-28 01:36:22,350 INFO L226 Difference]: Without dead ends: 15238 [2021-12-28 01:36:22,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:36:22,365 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 53 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:22,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1696 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15238 states. [2021-12-28 01:36:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15238 to 15238. [2021-12-28 01:36:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15238 states, 15233 states have (on average 1.4306439965863587) internal successors, (21793), 15237 states have internal predecessors, (21793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21793 transitions. [2021-12-28 01:36:23,724 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21793 transitions. Word has length 157 [2021-12-28 01:36:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:23,724 INFO L470 AbstractCegarLoop]: Abstraction has 15238 states and 21793 transitions. [2021-12-28 01:36:23,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21793 transitions. [2021-12-28 01:36:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 01:36:23,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:23,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:23,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 01:36:23,733 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:23,734 INFO L85 PathProgramCache]: Analyzing trace with hash 930860647, now seen corresponding path program 1 times [2021-12-28 01:36:23,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:23,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130977702] [2021-12-28 01:36:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:23,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:23,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:23,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130977702] [2021-12-28 01:36:23,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130977702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:23,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:23,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:36:23,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262102146] [2021-12-28 01:36:23,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:23,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:36:23,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:36:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:36:23,787 INFO L87 Difference]: Start difference. First operand 15238 states and 21793 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:25,919 INFO L93 Difference]: Finished difference Result 37005 states and 53276 transitions. [2021-12-28 01:36:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:36:25,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-12-28 01:36:25,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:25,949 INFO L225 Difference]: With dead ends: 37005 [2021-12-28 01:36:25,950 INFO L226 Difference]: Without dead ends: 23221 [2021-12-28 01:36:25,961 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 [2021-12-28 01:36:25,962 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 477 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:25,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23221 states. [2021-12-28 01:36:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23221 to 23191. [2021-12-28 01:36:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23191 states, 23186 states have (on average 1.4120590011213663) internal successors, (32740), 23190 states have internal predecessors, (32740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 32740 transitions. [2021-12-28 01:36:28,355 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 32740 transitions. Word has length 157 [2021-12-28 01:36:28,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:28,355 INFO L470 AbstractCegarLoop]: Abstraction has 23191 states and 32740 transitions. [2021-12-28 01:36:28,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 32740 transitions. [2021-12-28 01:36:28,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 01:36:28,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:28,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:28,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 01:36:28,368 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1036498047, now seen corresponding path program 1 times [2021-12-28 01:36:28,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:28,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416903803] [2021-12-28 01:36:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:28,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:28,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:28,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416903803] [2021-12-28 01:36:28,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416903803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:28,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:28,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:36:28,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678659752] [2021-12-28 01:36:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:28,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:36:28,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:28,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:36:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:36:28,402 INFO L87 Difference]: Start difference. First operand 23191 states and 32740 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:31,814 INFO L93 Difference]: Finished difference Result 53069 states and 76203 transitions. [2021-12-28 01:36:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:36:31,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-28 01:36:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:31,859 INFO L225 Difference]: With dead ends: 53069 [2021-12-28 01:36:31,859 INFO L226 Difference]: Without dead ends: 35071 [2021-12-28 01:36:31,876 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 [2021-12-28 01:36:31,877 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 297 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:31,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:36:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35071 states. [2021-12-28 01:36:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35071 to 32037. [2021-12-28 01:36:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32037 states, 32032 states have (on average 1.4502997002997002) internal successors, (46456), 32036 states have internal predecessors, (46456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32037 states to 32037 states and 46456 transitions. [2021-12-28 01:36:35,353 INFO L78 Accepts]: Start accepts. Automaton has 32037 states and 46456 transitions. Word has length 161 [2021-12-28 01:36:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:35,353 INFO L470 AbstractCegarLoop]: Abstraction has 32037 states and 46456 transitions. [2021-12-28 01:36:35,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 32037 states and 46456 transitions. [2021-12-28 01:36:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 01:36:35,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:35,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:35,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 01:36:35,437 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2040023043, now seen corresponding path program 1 times [2021-12-28 01:36:35,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:35,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936028718] [2021-12-28 01:36:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:35,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:35,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:35,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936028718] [2021-12-28 01:36:35,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936028718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:35,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:35,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:36:35,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744344935] [2021-12-28 01:36:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:35,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 01:36:35,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 01:36:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:36:35,552 INFO L87 Difference]: Start difference. First operand 32037 states and 46456 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:36:49,143 INFO L93 Difference]: Finished difference Result 126861 states and 188903 transitions. [2021-12-28 01:36:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 01:36:49,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-12-28 01:36:49,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:36:49,345 INFO L225 Difference]: With dead ends: 126861 [2021-12-28 01:36:49,346 INFO L226 Difference]: Without dead ends: 99278 [2021-12-28 01:36:49,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-12-28 01:36:49,386 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 5429 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:36:49,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 2457 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:36:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99278 states. [2021-12-28 01:36:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99278 to 66186. [2021-12-28 01:36:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66186 states, 66181 states have (on average 1.4706486756017587) internal successors, (97329), 66185 states have internal predecessors, (97329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66186 states to 66186 states and 97329 transitions. [2021-12-28 01:36:59,367 INFO L78 Accepts]: Start accepts. Automaton has 66186 states and 97329 transitions. Word has length 161 [2021-12-28 01:36:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:36:59,368 INFO L470 AbstractCegarLoop]: Abstraction has 66186 states and 97329 transitions. [2021-12-28 01:36:59,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:36:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 66186 states and 97329 transitions. [2021-12-28 01:36:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 01:36:59,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:36:59,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:36:59,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 01:36:59,381 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-28 01:36:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:36:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1753304748, now seen corresponding path program 1 times [2021-12-28 01:36:59,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:36:59,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761935959] [2021-12-28 01:36:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:36:59,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:36:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:36:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:36:59,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:36:59,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761935959] [2021-12-28 01:36:59,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761935959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:36:59,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:36:59,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:36:59,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110136692] [2021-12-28 01:36:59,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:36:59,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 01:36:59,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:36:59,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 01:36:59,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 01:36:59,483 INFO L87 Difference]: Start difference. First operand 66186 states and 97329 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)