./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-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 22565549446fb10d699e81ca4083722d91d5f2743033fe3de4e7c76b9089640a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:04:02,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:04:02,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:04:02,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:04:02,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:04:02,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:04:02,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:04:02,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:04:02,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:04:02,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:04:02,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:04:02,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:04:02,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:04:02,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:04:02,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:04:02,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:04:02,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:04:02,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:04:02,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:04:02,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:04:02,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:04:02,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:04:02,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:04:02,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:04:03,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:04:03,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:04:03,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:04:03,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:04:03,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:04:03,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:04:03,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:04:03,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:04:03,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:04:03,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:04:03,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:04:03,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:04:03,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:04:03,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:04:03,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:04:03,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:04:03,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:04:03,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:04:03,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:04:03,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:04:03,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:04:03,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:04:03,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:04:03,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:04:03,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:04:03,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:04:03,050 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:04:03,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:04:03,051 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:04:03,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:04:03,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:04:03,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:04:03,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:04:03,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:04:03,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:04:03,052 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:04:03,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:04:03,053 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:04:03,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:04:03,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:04:03,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:04:03,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:04:03,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:04:03,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:04:03,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:04:03,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:04:03,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:04:03,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:04:03,055 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:04:03,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:04:03,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:04:03,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:04:03,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22565549446fb10d699e81ca4083722d91d5f2743033fe3de4e7c76b9089640a [2021-12-22 12:04:03,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:04:03,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:04:03,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:04:03,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:04:03,249 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:04:03,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-22 12:04:03,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9229a3891/bbc768be50af4446b55bea4b4811caec/FLAGdfd96e973 [2021-12-22 12:04:03,610 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:04:03,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-22 12:04:03,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9229a3891/bbc768be50af4446b55bea4b4811caec/FLAGdfd96e973 [2021-12-22 12:04:04,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9229a3891/bbc768be50af4446b55bea4b4811caec [2021-12-22 12:04:04,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:04:04,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:04:04,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:04:04,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:04:04,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:04:04,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4be61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04, skipping insertion in model container [2021-12-22 12:04:04,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:04:04,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:04:04,243 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2021-12-22 12:04:04,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:04:04,273 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:04:04,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2021-12-22 12:04:04,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:04:04,350 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:04:04,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04 WrapperNode [2021-12-22 12:04:04,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:04:04,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:04:04,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:04:04,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:04:04,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,389 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 592 [2021-12-22 12:04:04,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:04:04,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:04:04,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:04:04,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:04:04,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:04:04,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:04:04,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:04:04,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:04:04,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (1/1) ... [2021-12-22 12:04:04,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:04:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:04:04,457 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) [2021-12-22 12:04:04,473 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 [2021-12-22 12:04:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:04:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:04:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:04:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:04:04,592 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:04:04,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:04:04,946 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:04:04,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:04:04,953 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 12:04:04,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:04:04 BoogieIcfgContainer [2021-12-22 12:04:04,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:04:04,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:04:04,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:04:04,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:04:04,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:04:04" (1/3) ... [2021-12-22 12:04:04,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6242756b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:04:04, skipping insertion in model container [2021-12-22 12:04:04,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:04:04" (2/3) ... [2021-12-22 12:04:04,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6242756b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:04:04, skipping insertion in model container [2021-12-22 12:04:04,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:04:04" (3/3) ... [2021-12-22 12:04:04,961 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-22 12:04:04,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:04:04,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 12:04:05,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:04:05,039 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 [2021-12-22 12:04:05,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 12:04:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 12:04:05,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:05,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:05,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 293786216, now seen corresponding path program 1 times [2021-12-22 12:04:05,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:05,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739989503] [2021-12-22 12:04:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:05,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:05,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:05,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739989503] [2021-12-22 12:04:05,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739989503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:05,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:05,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:04:05,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055417250] [2021-12-22 12:04:05,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:05,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:05,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:05,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:05,433 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:05,620 INFO L93 Difference]: Finished difference Result 516 states and 834 transitions. [2021-12-22 12:04:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:05,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-22 12:04:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:05,637 INFO L225 Difference]: With dead ends: 516 [2021-12-22 12:04:05,637 INFO L226 Difference]: Without dead ends: 437 [2021-12-22 12:04:05,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:05,644 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 908 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:05,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1286 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:04:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-12-22 12:04:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 255. [2021-12-22 12:04:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.515748031496063) internal successors, (385), 254 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 385 transitions. [2021-12-22 12:04:05,708 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 385 transitions. Word has length 49 [2021-12-22 12:04:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:05,708 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 385 transitions. [2021-12-22 12:04:05,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 385 transitions. [2021-12-22 12:04:05,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 12:04:05,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:05,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:05,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:04:05,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1697275801, now seen corresponding path program 1 times [2021-12-22 12:04:05,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:05,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266131669] [2021-12-22 12:04:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:05,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:05,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:05,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266131669] [2021-12-22 12:04:05,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266131669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:05,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:05,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:05,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235935810] [2021-12-22 12:04:05,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:05,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:05,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:05,782 INFO L87 Difference]: Start difference. First operand 255 states and 385 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:05,817 INFO L93 Difference]: Finished difference Result 627 states and 965 transitions. [2021-12-22 12:04:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:05,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-22 12:04:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:05,819 INFO L225 Difference]: With dead ends: 627 [2021-12-22 12:04:05,819 INFO L226 Difference]: Without dead ends: 429 [2021-12-22 12:04:05,820 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 [2021-12-22 12:04:05,821 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:05,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 422 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-22 12:04:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2021-12-22 12:04:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.5046948356807512) internal successors, (641), 426 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 641 transitions. [2021-12-22 12:04:05,841 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 641 transitions. Word has length 52 [2021-12-22 12:04:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:05,841 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 641 transitions. [2021-12-22 12:04:05,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 641 transitions. [2021-12-22 12:04:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 12:04:05,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:05,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:05,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:04:05,843 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash -195371450, now seen corresponding path program 1 times [2021-12-22 12:04:05,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:05,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799329473] [2021-12-22 12:04:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:05,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:05,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:05,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799329473] [2021-12-22 12:04:05,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799329473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:05,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:05,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:05,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621347678] [2021-12-22 12:04:05,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:05,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:05,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:05,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:05,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:05,883 INFO L87 Difference]: Start difference. First operand 427 states and 641 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:05,932 INFO L93 Difference]: Finished difference Result 1077 states and 1638 transitions. [2021-12-22 12:04:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:05,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-22 12:04:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:05,935 INFO L225 Difference]: With dead ends: 1077 [2021-12-22 12:04:05,935 INFO L226 Difference]: Without dead ends: 749 [2021-12-22 12:04:05,936 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 [2021-12-22 12:04:05,937 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:05,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-12-22 12:04:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 747. [2021-12-22 12:04:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.4946380697050938) internal successors, (1115), 746 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1115 transitions. [2021-12-22 12:04:05,977 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1115 transitions. Word has length 52 [2021-12-22 12:04:05,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:05,977 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 1115 transitions. [2021-12-22 12:04:05,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1115 transitions. [2021-12-22 12:04:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 12:04:05,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:05,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:05,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:04:05,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1046972601, now seen corresponding path program 1 times [2021-12-22 12:04:05,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:05,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057810922] [2021-12-22 12:04:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:05,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:06,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:06,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057810922] [2021-12-22 12:04:06,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057810922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:06,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:06,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:06,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034583140] [2021-12-22 12:04:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:06,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:06,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:06,018 INFO L87 Difference]: Start difference. First operand 747 states and 1115 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:06,102 INFO L93 Difference]: Finished difference Result 1857 states and 2792 transitions. [2021-12-22 12:04:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:06,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-22 12:04:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:06,108 INFO L225 Difference]: With dead ends: 1857 [2021-12-22 12:04:06,108 INFO L226 Difference]: Without dead ends: 1293 [2021-12-22 12:04:06,110 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 [2021-12-22 12:04:06,118 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:06,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-12-22 12:04:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1291. [2021-12-22 12:04:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1290 states have (on average 1.4751937984496124) internal successors, (1903), 1290 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1903 transitions. [2021-12-22 12:04:06,184 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1903 transitions. Word has length 52 [2021-12-22 12:04:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:06,185 INFO L470 AbstractCegarLoop]: Abstraction has 1291 states and 1903 transitions. [2021-12-22 12:04:06,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1903 transitions. [2021-12-22 12:04:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 12:04:06,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:06,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:06,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:04:06,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1633425885, now seen corresponding path program 1 times [2021-12-22 12:04:06,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:06,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177895293] [2021-12-22 12:04:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:06,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:06,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:06,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177895293] [2021-12-22 12:04:06,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177895293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:06,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:06,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:04:06,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291746964] [2021-12-22 12:04:06,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:06,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:06,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:06,283 INFO L87 Difference]: Start difference. First operand 1291 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:06,453 INFO L93 Difference]: Finished difference Result 2511 states and 3768 transitions. [2021-12-22 12:04:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:06,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-22 12:04:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:06,460 INFO L225 Difference]: With dead ends: 2511 [2021-12-22 12:04:06,460 INFO L226 Difference]: Without dead ends: 2145 [2021-12-22 12:04:06,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:06,464 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 640 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:06,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 1142 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2021-12-22 12:04:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 1740. [2021-12-22 12:04:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1739 states have (on average 1.4836112708453133) internal successors, (2580), 1739 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2580 transitions. [2021-12-22 12:04:06,570 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2580 transitions. Word has length 53 [2021-12-22 12:04:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:06,570 INFO L470 AbstractCegarLoop]: Abstraction has 1740 states and 2580 transitions. [2021-12-22 12:04:06,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2580 transitions. [2021-12-22 12:04:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 12:04:06,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:06,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:06,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:04:06,574 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1286312845, now seen corresponding path program 1 times [2021-12-22 12:04:06,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:06,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673778522] [2021-12-22 12:04:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:06,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:06,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:06,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673778522] [2021-12-22 12:04:06,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673778522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:06,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:06,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:04:06,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72222088] [2021-12-22 12:04:06,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:06,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:06,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:06,619 INFO L87 Difference]: Start difference. First operand 1740 states and 2580 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:06,785 INFO L93 Difference]: Finished difference Result 2960 states and 4445 transitions. [2021-12-22 12:04:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-22 12:04:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:06,793 INFO L225 Difference]: With dead ends: 2960 [2021-12-22 12:04:06,793 INFO L226 Difference]: Without dead ends: 2594 [2021-12-22 12:04:06,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:06,794 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 632 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:06,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 997 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2021-12-22 12:04:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2085. [2021-12-22 12:04:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2084 states have (on average 1.4889635316698657) internal successors, (3103), 2084 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3103 transitions. [2021-12-22 12:04:06,900 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3103 transitions. Word has length 53 [2021-12-22 12:04:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:06,900 INFO L470 AbstractCegarLoop]: Abstraction has 2085 states and 3103 transitions. [2021-12-22 12:04:06,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3103 transitions. [2021-12-22 12:04:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 12:04:06,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:06,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:06,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:04:06,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1015763425, now seen corresponding path program 1 times [2021-12-22 12:04:06,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:06,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821114120] [2021-12-22 12:04:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:06,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:06,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:06,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821114120] [2021-12-22 12:04:06,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821114120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:06,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:06,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:04:06,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769528557] [2021-12-22 12:04:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:06,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:06,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:06,940 INFO L87 Difference]: Start difference. First operand 2085 states and 3103 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:07,113 INFO L93 Difference]: Finished difference Result 3359 states and 5045 transitions. [2021-12-22 12:04:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:07,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-22 12:04:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:07,121 INFO L225 Difference]: With dead ends: 3359 [2021-12-22 12:04:07,122 INFO L226 Difference]: Without dead ends: 2993 [2021-12-22 12:04:07,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:07,123 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 636 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:07,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1068 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2021-12-22 12:04:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2375. [2021-12-22 12:04:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2374 states have (on average 1.4928390901432183) internal successors, (3544), 2374 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3544 transitions. [2021-12-22 12:04:07,233 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3544 transitions. Word has length 53 [2021-12-22 12:04:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:07,233 INFO L470 AbstractCegarLoop]: Abstraction has 2375 states and 3544 transitions. [2021-12-22 12:04:07,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3544 transitions. [2021-12-22 12:04:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 12:04:07,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:07,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:07,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:04:07,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1968890954, now seen corresponding path program 1 times [2021-12-22 12:04:07,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:07,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431031576] [2021-12-22 12:04:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:07,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:07,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:07,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431031576] [2021-12-22 12:04:07,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431031576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:07,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:07,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:04:07,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047253570] [2021-12-22 12:04:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:07,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:07,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:07,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:07,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:07,273 INFO L87 Difference]: Start difference. First operand 2375 states and 3544 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:07,574 INFO L93 Difference]: Finished difference Result 5650 states and 8421 transitions. [2021-12-22 12:04:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:07,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-22 12:04:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:07,583 INFO L225 Difference]: With dead ends: 5650 [2021-12-22 12:04:07,583 INFO L226 Difference]: Without dead ends: 3302 [2021-12-22 12:04:07,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:07,585 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 896 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:07,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 212 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:04:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2021-12-22 12:04:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3275. [2021-12-22 12:04:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 1.4706780696395847) internal successors, (4815), 3274 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4815 transitions. [2021-12-22 12:04:07,736 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4815 transitions. Word has length 57 [2021-12-22 12:04:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:07,737 INFO L470 AbstractCegarLoop]: Abstraction has 3275 states and 4815 transitions. [2021-12-22 12:04:07,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4815 transitions. [2021-12-22 12:04:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 12:04:07,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:07,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:07,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:04:07,748 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:07,749 INFO L85 PathProgramCache]: Analyzing trace with hash -108107112, now seen corresponding path program 1 times [2021-12-22 12:04:07,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:07,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152557643] [2021-12-22 12:04:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:07,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:07,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:07,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152557643] [2021-12-22 12:04:07,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152557643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:07,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:07,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:04:07,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054805226] [2021-12-22 12:04:07,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:07,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:07,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:07,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:07,780 INFO L87 Difference]: Start difference. First operand 3275 states and 4815 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:08,156 INFO L93 Difference]: Finished difference Result 7802 states and 11466 transitions. [2021-12-22 12:04:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:08,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-22 12:04:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:08,169 INFO L225 Difference]: With dead ends: 7802 [2021-12-22 12:04:08,170 INFO L226 Difference]: Without dead ends: 4572 [2021-12-22 12:04:08,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:08,188 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 884 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:08,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 230 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:04:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4572 states. [2021-12-22 12:04:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4572 to 4547. [2021-12-22 12:04:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 4546 states have (on average 1.457765068191817) internal successors, (6627), 4546 states have internal predecessors, (6627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 6627 transitions. [2021-12-22 12:04:08,443 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 6627 transitions. Word has length 57 [2021-12-22 12:04:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:08,443 INFO L470 AbstractCegarLoop]: Abstraction has 4547 states and 6627 transitions. [2021-12-22 12:04:08,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:08,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 6627 transitions. [2021-12-22 12:04:08,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 12:04:08,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:08,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:08,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:04:08,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash 871846780, now seen corresponding path program 1 times [2021-12-22 12:04:08,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:08,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565892393] [2021-12-22 12:04:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:08,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:08,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:08,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565892393] [2021-12-22 12:04:08,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565892393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:08,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:08,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:04:08,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123958145] [2021-12-22 12:04:08,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:08,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:08,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:08,477 INFO L87 Difference]: Start difference. First operand 4547 states and 6627 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:08,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:08,971 INFO L93 Difference]: Finished difference Result 10777 states and 15690 transitions. [2021-12-22 12:04:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:08,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-22 12:04:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:08,990 INFO L225 Difference]: With dead ends: 10777 [2021-12-22 12:04:08,990 INFO L226 Difference]: Without dead ends: 6311 [2021-12-22 12:04:08,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:08,996 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 839 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:08,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 232 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:04:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6311 states. [2021-12-22 12:04:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6311 to 6276. [2021-12-22 12:04:09,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6276 states, 6275 states have (on average 1.4422310756972112) internal successors, (9050), 6275 states have internal predecessors, (9050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 9050 transitions. [2021-12-22 12:04:09,371 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 9050 transitions. Word has length 58 [2021-12-22 12:04:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:09,371 INFO L470 AbstractCegarLoop]: Abstraction has 6276 states and 9050 transitions. [2021-12-22 12:04:09,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 9050 transitions. [2021-12-22 12:04:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-22 12:04:09,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:09,376 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] [2021-12-22 12:04:09,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:04:09,376 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:09,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash 536362735, now seen corresponding path program 1 times [2021-12-22 12:04:09,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:09,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408334512] [2021-12-22 12:04:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:09,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:09,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:09,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408334512] [2021-12-22 12:04:09,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408334512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:09,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:09,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:04:09,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528472316] [2021-12-22 12:04:09,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:09,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:04:09,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:09,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:04:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:09,428 INFO L87 Difference]: Start difference. First operand 6276 states and 9050 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:11,073 INFO L93 Difference]: Finished difference Result 24215 states and 34743 transitions. [2021-12-22 12:04:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 12:04:11,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-22 12:04:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:11,116 INFO L225 Difference]: With dead ends: 24215 [2021-12-22 12:04:11,116 INFO L226 Difference]: Without dead ends: 20969 [2021-12-22 12:04:11,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:04:11,128 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 2048 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:11,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 349 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:04:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20969 states. [2021-12-22 12:04:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20969 to 6296. [2021-12-22 12:04:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 6295 states have (on average 1.4414614773629866) internal successors, (9074), 6295 states have internal predecessors, (9074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 9074 transitions. [2021-12-22 12:04:11,732 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 9074 transitions. Word has length 59 [2021-12-22 12:04:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:11,732 INFO L470 AbstractCegarLoop]: Abstraction has 6296 states and 9074 transitions. [2021-12-22 12:04:11,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 9074 transitions. [2021-12-22 12:04:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-22 12:04:11,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:11,735 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] [2021-12-22 12:04:11,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:04:11,736 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash -426804272, now seen corresponding path program 1 times [2021-12-22 12:04:11,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:11,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213667050] [2021-12-22 12:04:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:11,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:11,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:11,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213667050] [2021-12-22 12:04:11,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213667050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:11,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:11,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:04:11,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954810109] [2021-12-22 12:04:11,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:11,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:04:11,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:04:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:11,781 INFO L87 Difference]: Start difference. First operand 6296 states and 9074 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:14,420 INFO L93 Difference]: Finished difference Result 28478 states and 40805 transitions. [2021-12-22 12:04:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 12:04:14,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-22 12:04:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:14,473 INFO L225 Difference]: With dead ends: 28478 [2021-12-22 12:04:14,473 INFO L226 Difference]: Without dead ends: 25380 [2021-12-22 12:04:14,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:04:14,484 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2338 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:14,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 395 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:04:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25380 states. [2021-12-22 12:04:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25380 to 6390. [2021-12-22 12:04:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6390 states, 6389 states have (on average 1.4391923618719675) internal successors, (9195), 6389 states have internal predecessors, (9195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6390 states to 6390 states and 9195 transitions. [2021-12-22 12:04:15,238 INFO L78 Accepts]: Start accepts. Automaton has 6390 states and 9195 transitions. Word has length 59 [2021-12-22 12:04:15,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:15,238 INFO L470 AbstractCegarLoop]: Abstraction has 6390 states and 9195 transitions. [2021-12-22 12:04:15,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6390 states and 9195 transitions. [2021-12-22 12:04:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-22 12:04:15,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:15,241 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] [2021-12-22 12:04:15,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 12:04:15,242 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash -974429839, now seen corresponding path program 1 times [2021-12-22 12:04:15,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:15,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362855313] [2021-12-22 12:04:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:15,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:15,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:15,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362855313] [2021-12-22 12:04:15,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362855313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:15,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:15,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:04:15,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001213835] [2021-12-22 12:04:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:15,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:04:15,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:04:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:04:15,284 INFO L87 Difference]: Start difference. First operand 6390 states and 9195 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:18,923 INFO L93 Difference]: Finished difference Result 33779 states and 48451 transitions. [2021-12-22 12:04:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 12:04:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-12-22 12:04:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:18,976 INFO L225 Difference]: With dead ends: 33779 [2021-12-22 12:04:18,977 INFO L226 Difference]: Without dead ends: 30681 [2021-12-22 12:04:18,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:04:18,990 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 2701 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2701 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:18,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2701 Valid, 412 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:04:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30681 states. [2021-12-22 12:04:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30681 to 6446. [2021-12-22 12:04:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6446 states, 6445 states have (on average 1.4373933281613653) internal successors, (9264), 6445 states have internal predecessors, (9264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6446 states to 6446 states and 9264 transitions. [2021-12-22 12:04:19,860 INFO L78 Accepts]: Start accepts. Automaton has 6446 states and 9264 transitions. Word has length 59 [2021-12-22 12:04:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:19,861 INFO L470 AbstractCegarLoop]: Abstraction has 6446 states and 9264 transitions. [2021-12-22 12:04:19,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6446 states and 9264 transitions. [2021-12-22 12:04:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-22 12:04:19,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:19,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:19,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 12:04:19,865 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1695106365, now seen corresponding path program 1 times [2021-12-22 12:04:19,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:19,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015034124] [2021-12-22 12:04:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:19,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:20,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:20,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015034124] [2021-12-22 12:04:20,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015034124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:20,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:20,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:04:20,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872008566] [2021-12-22 12:04:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:20,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:04:20,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:04:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:04:20,019 INFO L87 Difference]: Start difference. First operand 6446 states and 9264 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:23,628 INFO L93 Difference]: Finished difference Result 24367 states and 34959 transitions. [2021-12-22 12:04:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 12:04:23,629 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-22 12:04:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:23,655 INFO L225 Difference]: With dead ends: 24367 [2021-12-22 12:04:23,656 INFO L226 Difference]: Without dead ends: 19177 [2021-12-22 12:04:23,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-12-22 12:04:23,665 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 2038 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:23,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 1575 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:04:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19177 states. [2021-12-22 12:04:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19177 to 6318. [2021-12-22 12:04:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 6317 states have (on average 1.434383409846446) internal successors, (9061), 6317 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 9061 transitions. [2021-12-22 12:04:24,565 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 9061 transitions. Word has length 61 [2021-12-22 12:04:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:24,566 INFO L470 AbstractCegarLoop]: Abstraction has 6318 states and 9061 transitions. [2021-12-22 12:04:24,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 9061 transitions. [2021-12-22 12:04:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-22 12:04:24,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:24,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:24,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 12:04:24,569 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:24,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1748259780, now seen corresponding path program 1 times [2021-12-22 12:04:24,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:24,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565772521] [2021-12-22 12:04:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:24,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:24,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:24,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565772521] [2021-12-22 12:04:24,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565772521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:24,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:24,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:04:24,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391820058] [2021-12-22 12:04:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:24,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:04:24,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:04:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:04:24,714 INFO L87 Difference]: Start difference. First operand 6318 states and 9061 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:28,545 INFO L93 Difference]: Finished difference Result 24470 states and 34992 transitions. [2021-12-22 12:04:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 12:04:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-22 12:04:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:28,576 INFO L225 Difference]: With dead ends: 24470 [2021-12-22 12:04:28,576 INFO L226 Difference]: Without dead ends: 19196 [2021-12-22 12:04:28,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-12-22 12:04:28,588 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1953 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:28,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1953 Valid, 1615 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:04:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19196 states. [2021-12-22 12:04:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19196 to 6129. [2021-12-22 12:04:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6129 states, 6128 states have (on average 1.4319516971279374) internal successors, (8775), 6128 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 8775 transitions. [2021-12-22 12:04:29,651 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 8775 transitions. Word has length 61 [2021-12-22 12:04:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:29,651 INFO L470 AbstractCegarLoop]: Abstraction has 6129 states and 8775 transitions. [2021-12-22 12:04:29,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 8775 transitions. [2021-12-22 12:04:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-22 12:04:29,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:29,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:29,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 12:04:29,655 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:29,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash 11490693, now seen corresponding path program 1 times [2021-12-22 12:04:29,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:29,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594001854] [2021-12-22 12:04:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:29,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:29,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:29,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594001854] [2021-12-22 12:04:29,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594001854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:29,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:29,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:04:29,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041681145] [2021-12-22 12:04:29,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:29,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:04:29,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:04:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:04:29,794 INFO L87 Difference]: Start difference. First operand 6129 states and 8775 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:33,270 INFO L93 Difference]: Finished difference Result 21140 states and 30295 transitions. [2021-12-22 12:04:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 12:04:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-22 12:04:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:33,296 INFO L225 Difference]: With dead ends: 21140 [2021-12-22 12:04:33,296 INFO L226 Difference]: Without dead ends: 15922 [2021-12-22 12:04:33,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-12-22 12:04:33,308 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 2124 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:33,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2124 Valid, 1332 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 12:04:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15922 states. [2021-12-22 12:04:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15922 to 5980. [2021-12-22 12:04:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 5979 states have (on average 1.4323465462451914) internal successors, (8564), 5979 states have internal predecessors, (8564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 8564 transitions. [2021-12-22 12:04:34,432 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 8564 transitions. Word has length 61 [2021-12-22 12:04:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:34,433 INFO L470 AbstractCegarLoop]: Abstraction has 5980 states and 8564 transitions. [2021-12-22 12:04:34,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 8564 transitions. [2021-12-22 12:04:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-22 12:04:34,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:34,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:34,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 12:04:34,435 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash -746765663, now seen corresponding path program 1 times [2021-12-22 12:04:34,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:34,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382336969] [2021-12-22 12:04:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:34,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:34,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:34,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382336969] [2021-12-22 12:04:34,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382336969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:34,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:34,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:34,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783242547] [2021-12-22 12:04:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:34,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:34,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:34,459 INFO L87 Difference]: Start difference. First operand 5980 states and 8564 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:35,462 INFO L93 Difference]: Finished difference Result 9027 states and 12937 transitions. [2021-12-22 12:04:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-22 12:04:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:35,471 INFO L225 Difference]: With dead ends: 9027 [2021-12-22 12:04:35,471 INFO L226 Difference]: Without dead ends: 5797 [2021-12-22 12:04:35,478 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 [2021-12-22 12:04:35,478 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 150 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:35,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 526 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:35,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-12-22 12:04:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5795. [2021-12-22 12:04:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5795 states, 5794 states have (on average 1.4126682775284778) internal successors, (8185), 5794 states have internal predecessors, (8185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5795 states to 5795 states and 8185 transitions. [2021-12-22 12:04:36,584 INFO L78 Accepts]: Start accepts. Automaton has 5795 states and 8185 transitions. Word has length 62 [2021-12-22 12:04:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:36,584 INFO L470 AbstractCegarLoop]: Abstraction has 5795 states and 8185 transitions. [2021-12-22 12:04:36,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5795 states and 8185 transitions. [2021-12-22 12:04:36,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-22 12:04:36,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:36,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:36,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 12:04:36,587 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -691619625, now seen corresponding path program 1 times [2021-12-22 12:04:36,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:36,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950155724] [2021-12-22 12:04:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:36,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:36,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:36,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950155724] [2021-12-22 12:04:36,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950155724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:36,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:36,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:36,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86710531] [2021-12-22 12:04:36,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:36,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:36,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:36,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:36,613 INFO L87 Difference]: Start difference. First operand 5795 states and 8185 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:37,496 INFO L93 Difference]: Finished difference Result 8079 states and 11408 transitions. [2021-12-22 12:04:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:37,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-22 12:04:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:37,503 INFO L225 Difference]: With dead ends: 8079 [2021-12-22 12:04:37,503 INFO L226 Difference]: Without dead ends: 5014 [2021-12-22 12:04:37,506 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 [2021-12-22 12:04:37,506 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 136 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:37,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 515 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5014 states. [2021-12-22 12:04:38,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5014 to 5012. [2021-12-22 12:04:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 5011 states have (on average 1.3883456395928957) internal successors, (6957), 5011 states have internal predecessors, (6957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 6957 transitions. [2021-12-22 12:04:38,343 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 6957 transitions. Word has length 62 [2021-12-22 12:04:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:38,343 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 6957 transitions. [2021-12-22 12:04:38,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 6957 transitions. [2021-12-22 12:04:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-22 12:04:38,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:38,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:38,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 12:04:38,345 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:38,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1051063940, now seen corresponding path program 1 times [2021-12-22 12:04:38,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:38,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531734001] [2021-12-22 12:04:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:38,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:38,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:38,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531734001] [2021-12-22 12:04:38,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531734001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:38,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:38,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:38,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137491316] [2021-12-22 12:04:38,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:38,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:38,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:38,368 INFO L87 Difference]: Start difference. First operand 5012 states and 6957 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:38,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:38,998 INFO L93 Difference]: Finished difference Result 6614 states and 9183 transitions. [2021-12-22 12:04:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:38,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-22 12:04:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:39,004 INFO L225 Difference]: With dead ends: 6614 [2021-12-22 12:04:39,004 INFO L226 Difference]: Without dead ends: 3858 [2021-12-22 12:04:39,007 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 [2021-12-22 12:04:39,007 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 148 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:39,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 526 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-12-22 12:04:39,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3856. [2021-12-22 12:04:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3855 states have (on average 1.364461738002594) internal successors, (5260), 3855 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5260 transitions. [2021-12-22 12:04:39,675 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5260 transitions. Word has length 62 [2021-12-22 12:04:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:39,675 INFO L470 AbstractCegarLoop]: Abstraction has 3856 states and 5260 transitions. [2021-12-22 12:04:39,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5260 transitions. [2021-12-22 12:04:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 12:04:39,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:39,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:39,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 12:04:39,678 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -751537894, now seen corresponding path program 1 times [2021-12-22 12:04:39,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:39,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089171980] [2021-12-22 12:04:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:39,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:39,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:39,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089171980] [2021-12-22 12:04:39,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089171980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:39,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:39,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:39,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207047303] [2021-12-22 12:04:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:39,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:39,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:39,700 INFO L87 Difference]: Start difference. First operand 3856 states and 5260 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:40,608 INFO L93 Difference]: Finished difference Result 7099 states and 9747 transitions. [2021-12-22 12:04:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:40,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-22 12:04:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:40,615 INFO L225 Difference]: With dead ends: 7099 [2021-12-22 12:04:40,615 INFO L226 Difference]: Without dead ends: 5180 [2021-12-22 12:04:40,618 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 [2021-12-22 12:04:40,618 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:40,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 346 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2021-12-22 12:04:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 3667. [2021-12-22 12:04:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 3666 states have (on average 1.363884342607747) internal successors, (5000), 3666 states have internal predecessors, (5000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5000 transitions. [2021-12-22 12:04:41,294 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5000 transitions. Word has length 63 [2021-12-22 12:04:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:41,294 INFO L470 AbstractCegarLoop]: Abstraction has 3667 states and 5000 transitions. [2021-12-22 12:04:41,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5000 transitions. [2021-12-22 12:04:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 12:04:41,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:41,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:41,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 12:04:41,297 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash 296287221, now seen corresponding path program 1 times [2021-12-22 12:04:41,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:41,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819131225] [2021-12-22 12:04:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:41,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:41,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:41,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819131225] [2021-12-22 12:04:41,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819131225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:41,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:41,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 12:04:41,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911349053] [2021-12-22 12:04:41,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:41,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 12:04:41,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:41,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 12:04:41,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-22 12:04:41,618 INFO L87 Difference]: Start difference. First operand 3667 states and 5000 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:45,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:45,894 INFO L93 Difference]: Finished difference Result 11974 states and 16499 transitions. [2021-12-22 12:04:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-22 12:04:45,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-22 12:04:45,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:45,909 INFO L225 Difference]: With dead ends: 11974 [2021-12-22 12:04:45,909 INFO L226 Difference]: Without dead ends: 11633 [2021-12-22 12:04:45,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2021-12-22 12:04:45,915 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 3303 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:45,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3303 Valid, 4494 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:04:45,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11633 states. [2021-12-22 12:04:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11633 to 3614. [2021-12-22 12:04:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3613 states have (on average 1.3639634652643233) internal successors, (4928), 3613 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 4928 transitions. [2021-12-22 12:04:46,749 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 4928 transitions. Word has length 63 [2021-12-22 12:04:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:46,749 INFO L470 AbstractCegarLoop]: Abstraction has 3614 states and 4928 transitions. [2021-12-22 12:04:46,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 4928 transitions. [2021-12-22 12:04:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 12:04:46,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:46,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:46,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 12:04:46,751 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:46,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash 639398585, now seen corresponding path program 1 times [2021-12-22 12:04:46,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:46,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090656627] [2021-12-22 12:04:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:46,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:47,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:47,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090656627] [2021-12-22 12:04:47,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090656627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:47,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:47,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 12:04:47,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581893211] [2021-12-22 12:04:47,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:47,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 12:04:47,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 12:04:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-22 12:04:47,124 INFO L87 Difference]: Start difference. First operand 3614 states and 4928 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:50,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:50,857 INFO L93 Difference]: Finished difference Result 9118 states and 12563 transitions. [2021-12-22 12:04:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 12:04:50,858 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-22 12:04:50,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:50,867 INFO L225 Difference]: With dead ends: 9118 [2021-12-22 12:04:50,867 INFO L226 Difference]: Without dead ends: 8736 [2021-12-22 12:04:50,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2021-12-22 12:04:50,869 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 3412 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:50,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3412 Valid, 2352 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:04:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8736 states. [2021-12-22 12:04:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8736 to 3514. [2021-12-22 12:04:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3513 states have (on average 1.3640762880728723) internal successors, (4792), 3513 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 4792 transitions. [2021-12-22 12:04:51,843 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 4792 transitions. Word has length 63 [2021-12-22 12:04:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:51,843 INFO L470 AbstractCegarLoop]: Abstraction has 3514 states and 4792 transitions. [2021-12-22 12:04:51,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 4792 transitions. [2021-12-22 12:04:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-22 12:04:51,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:51,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:51,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 12:04:51,845 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash 393964366, now seen corresponding path program 1 times [2021-12-22 12:04:51,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:51,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534142458] [2021-12-22 12:04:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:51,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:51,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:51,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534142458] [2021-12-22 12:04:51,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534142458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:51,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:51,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:51,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691366040] [2021-12-22 12:04:51,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:51,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:51,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:51,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:51,864 INFO L87 Difference]: Start difference. First operand 3514 states and 4792 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:53,248 INFO L93 Difference]: Finished difference Result 6609 states and 9067 transitions. [2021-12-22 12:04:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-22 12:04:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:53,254 INFO L225 Difference]: With dead ends: 6609 [2021-12-22 12:04:53,254 INFO L226 Difference]: Without dead ends: 4714 [2021-12-22 12:04:53,257 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 [2021-12-22 12:04:53,258 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 169 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:53,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 324 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2021-12-22 12:04:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 3297. [2021-12-22 12:04:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 3296 states have (on average 1.3634708737864079) internal successors, (4494), 3296 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 4494 transitions. [2021-12-22 12:04:54,180 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 4494 transitions. Word has length 63 [2021-12-22 12:04:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:54,180 INFO L470 AbstractCegarLoop]: Abstraction has 3297 states and 4494 transitions. [2021-12-22 12:04:54,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 4494 transitions. [2021-12-22 12:04:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-22 12:04:54,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:54,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:54,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 12:04:54,191 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 880460014, now seen corresponding path program 1 times [2021-12-22 12:04:54,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:54,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617994508] [2021-12-22 12:04:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:54,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:54,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:54,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617994508] [2021-12-22 12:04:54,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617994508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:54,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:54,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:04:54,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397614553] [2021-12-22 12:04:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:54,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:04:54,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:04:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:54,246 INFO L87 Difference]: Start difference. First operand 3297 states and 4494 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:55,144 INFO L93 Difference]: Finished difference Result 3303 states and 4497 transitions. [2021-12-22 12:04:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:04:55,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-22 12:04:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:55,149 INFO L225 Difference]: With dead ends: 3303 [2021-12-22 12:04:55,149 INFO L226 Difference]: Without dead ends: 2844 [2021-12-22 12:04:55,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:04:55,150 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 634 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:55,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 617 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2021-12-22 12:04:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2840. [2021-12-22 12:04:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2839 states have (on average 1.3652694610778444) internal successors, (3876), 2839 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3876 transitions. [2021-12-22 12:04:56,023 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3876 transitions. Word has length 67 [2021-12-22 12:04:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:56,024 INFO L470 AbstractCegarLoop]: Abstraction has 2840 states and 3876 transitions. [2021-12-22 12:04:56,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3876 transitions. [2021-12-22 12:04:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-22 12:04:56,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:56,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:56,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 12:04:56,026 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1617522588, now seen corresponding path program 1 times [2021-12-22 12:04:56,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:56,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293022232] [2021-12-22 12:04:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:56,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:56,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:56,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293022232] [2021-12-22 12:04:56,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293022232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:56,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:56,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:56,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954874596] [2021-12-22 12:04:56,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:56,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:56,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:56,058 INFO L87 Difference]: Start difference. First operand 2840 states and 3876 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:04:57,638 INFO L93 Difference]: Finished difference Result 7213 states and 9958 transitions. [2021-12-22 12:04:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:04:57,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-22 12:04:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:04:57,644 INFO L225 Difference]: With dead ends: 7213 [2021-12-22 12:04:57,644 INFO L226 Difference]: Without dead ends: 4924 [2021-12-22 12:04:57,646 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 [2021-12-22 12:04:57,647 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 118 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:04:57,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 437 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:04:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-12-22 12:04:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4580. [2021-12-22 12:04:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4579 states have (on average 1.3701681589866783) internal successors, (6274), 4579 states have internal predecessors, (6274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 6274 transitions. [2021-12-22 12:04:59,055 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 6274 transitions. Word has length 70 [2021-12-22 12:04:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:04:59,055 INFO L470 AbstractCegarLoop]: Abstraction has 4580 states and 6274 transitions. [2021-12-22 12:04:59,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:04:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 6274 transitions. [2021-12-22 12:04:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 12:04:59,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:04:59,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:04:59,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 12:04:59,057 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:04:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:04:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash 121806462, now seen corresponding path program 1 times [2021-12-22 12:04:59,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:04:59,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202050733] [2021-12-22 12:04:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:04:59,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:04:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:04:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:04:59,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:04:59,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202050733] [2021-12-22 12:04:59,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202050733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:04:59,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:04:59,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:04:59,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969500530] [2021-12-22 12:04:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:04:59,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:04:59,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:04:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:04:59,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:04:59,080 INFO L87 Difference]: Start difference. First operand 4580 states and 6274 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:05:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:05:01,769 INFO L93 Difference]: Finished difference Result 12228 states and 16836 transitions. [2021-12-22 12:05:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:05:01,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-22 12:05:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:05:01,779 INFO L225 Difference]: With dead ends: 12228 [2021-12-22 12:05:01,779 INFO L226 Difference]: Without dead ends: 8199 [2021-12-22 12:05:01,783 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 [2021-12-22 12:05:01,784 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 107 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:05:01,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 429 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:05:01,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2021-12-22 12:05:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 7609. [2021-12-22 12:05:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7609 states, 7608 states have (on average 1.3688222923238695) internal successors, (10414), 7608 states have internal predecessors, (10414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:05:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 10414 transitions. [2021-12-22 12:05:04,193 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 10414 transitions. Word has length 71 [2021-12-22 12:05:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:05:04,193 INFO L470 AbstractCegarLoop]: Abstraction has 7609 states and 10414 transitions. [2021-12-22 12:05:04,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:05:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 10414 transitions. [2021-12-22 12:05:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-22 12:05:04,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:05:04,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:05:04,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 12:05:04,195 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:05:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:05:04,195 INFO L85 PathProgramCache]: Analyzing trace with hash -577663364, now seen corresponding path program 1 times [2021-12-22 12:05:04,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:05:04,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745117147] [2021-12-22 12:05:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:05:04,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:05:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:05:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:05:04,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:05:04,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745117147] [2021-12-22 12:05:04,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745117147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:05:04,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:05:04,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:05:04,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029246624] [2021-12-22 12:05:04,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:05:04,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:05:04,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:05:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:05:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:05:04,219 INFO L87 Difference]: Start difference. First operand 7609 states and 10414 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:05:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:05:08,673 INFO L93 Difference]: Finished difference Result 20481 states and 27988 transitions. [2021-12-22 12:05:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:05:08,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-22 12:05:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:05:08,690 INFO L225 Difference]: With dead ends: 20481 [2021-12-22 12:05:08,690 INFO L226 Difference]: Without dead ends: 13328 [2021-12-22 12:05:08,695 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 [2021-12-22 12:05:08,696 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 112 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:05:08,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 429 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:05:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13328 states. [2021-12-22 12:05:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13328 to 12150. [2021-12-22 12:05:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12150 states, 12149 states have (on average 1.3538562844678574) internal successors, (16448), 12149 states have internal predecessors, (16448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:05:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12150 states to 12150 states and 16448 transitions. [2021-12-22 12:05:12,726 INFO L78 Accepts]: Start accepts. Automaton has 12150 states and 16448 transitions. Word has length 73 [2021-12-22 12:05:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:05:12,727 INFO L470 AbstractCegarLoop]: Abstraction has 12150 states and 16448 transitions. [2021-12-22 12:05:12,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:05:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12150 states and 16448 transitions. [2021-12-22 12:05:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-22 12:05:12,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:05:12,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:05:12,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 12:05:12,729 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:05:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:05:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash -686006937, now seen corresponding path program 1 times [2021-12-22 12:05:12,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:05:12,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036161545] [2021-12-22 12:05:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:05:12,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:05:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:05:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:05:12,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:05:12,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036161545] [2021-12-22 12:05:12,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036161545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:05:12,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:05:12,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:05:12,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803439651] [2021-12-22 12:05:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:05:12,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:05:12,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:05:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:05:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:05:12,769 INFO L87 Difference]: Start difference. First operand 12150 states and 16448 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)